Appendix C
Supervisory Control and Data
Acquisition System (SCADA)
Appendix C - Supervisory Control and Data Acquisition System (SCADA)
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Appendix C - Supervisory Control and Data Acquisition System (SCADA)
C-1
Introduction: Overview
SCADA is the acronym for Supervisory Control And Data Acquisition, SCADA
or Human-Machine Interface (HMI). The system allows distributed input to be
continuously monitored without the intervention of an operator and allows supervisor
or operator (depending on security level) to remotely control of equipment operating
status.
Data acquisition begins at the Programming Logic Controller, PLC level and includes
meter readings and equipment statuses that are communicated to the SCADA as
required. Data is then compiled and formatted in such a way that a control room
operator using the HMI can make appropriate supervisory decisions that may be
required to over-ride normal PLC controls. (A SCADA system includes all the
pieces, HMI, controllers, I/O devices, networks, software, etc.).
SCADA systems typically implement a distributed database which contains data
elements called tag points. A tag point represents a single input or output value
monitored or controlled by the system. Tag points can be either “hard” or “soft”.
A hard point is representative of an actual input or output connected to the system,
while a soft point represents the result of logic and math operations applied to
other hard and soft points. The point values are normally stored as value-timestamp
combinations; the value and the timestamp when the value was recorded or calculated.
A series of value-timestamp combinations is the history of that point.
The SCADA provides a user-friendly front-end to a control system containing
programmable logic controller (PLC) that provide automated, pre-programmed control
over a process. This enables the SCADA system to gather data automatically and
remotely rather than manually and site in-situ.
A SCADA software can be linked to a database (normally SQL-Structured Query
Language), to provide instant trending, diagnostic data, scheduled maintenance
procedures, logistic information, detailed schematics for a particular sensor or
machine, and expert-system troubleshooting guides. Most major PLC manufacturers
have offered integrated HMI/SCADA systems, many of them using open and nonproprietary communications protocols (such as MODBUS or Profibus).
In short, interfacing on of SCADA with PLC offers efficient monitoring and control
of process in a large installation site and with large number of distributed equipment
at a site. SCADA provide alarm notification, historical and on-line trending plots of
control parameters for effective process monitoring and control. SCADA system can
also be implemented with PPM schedule maintenance notification and reminder.
The SCADA that are installed at the remote sites can be linked to a Master Station
via communication system (Radio frequency or WIFI or other on-line communication
channels). The data from an equipment is collected via on-line data acquisition or,
unless otherwise allowed, on batch mode via data logging devices.
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Appendix C - Supervisory Control and Data Acquisition System (SCADA)
The SCADA software can also activate alarm messaging to inform the operator
station for exceptional event (critical alarm) reporting. Remote Access Server (RAS)
features can provide for either via Internet or other dial-up method (fixed line and/
or wireless modem).
All the proposed SCADA software shall be scalable and flexible enough to allow the
integration of any additional SCADA controller in future expansion. It shall provide
with many industrial standard protocols to allow the user to integrate easily.
C-2
Purpose
This document will provide basic technical requirement for implementation of
integrated SCADA/HMI in sewerage system.
C-3
General Requirements
The SCADA system shall be scalable process control solutions designed to meet
the required automation needs in the sewerage industries. The system shall provide
the required level of performance, flexibility, ease of use, and low life-cycle cost
of ownership, making use of the following technology that includes:
The SCADA system shall be Window based client/server system and make use of
the following technologies: •
•
•
•
C-4
Dynamic data caching, alarming, human machine interface, history collection,
and reporting functions;
Web viewable, providing secure, advanced user interface HMI capabilities
based on an open industry standard html file format and Web Browser
access;
Extensive list of communication interfaces;
Secure Internet Browser based on-line documentation and support.
Architecture
The SCADA architecture shall be flexible and scalable to allow expansion requirements.
The basic architecture shall incorporate all but not limited to the followings:
•
•
•
•
•
238
Standard based workstations;
powerful Windows based server(s);
Windows based clients;
Industry communication standards shall follow IEEE specification;
object-based configuration tools;
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•
•
•
•
•
•
C-5
controllers/remote terminal units;
with power surge protection;
Modem: digital or analog;
Network switches or routers;
Uninterrupted Power Supply (UPS);
data logger & storage devices for continuous monitoring of operation in
the event of cessation of communication;
SCADA Requirement
The SCADA shall utilize all but not limited to the followings available technologies
and features:
•
•
•
•
•
•
HMI Web – A web-based architecture that allows HMI and application
data which uses HTML display format to provide casual access of process
graphic displays.
Real-time Database – a true Client/Server architecture where a real-time
database on the server provides data to a number of client applications
including:
o Operator stations
o Microsoft office applications (such as Microsoft Excel or Microsoft
Access)
o Internet explorer
Open Systems – incorporates open technologies and standards including
SQL, ODBC, DDE, Visual Basic, and other OLE for process control.
Infrastructure – in cooperate alarm/event management system; configure
reports, history collection and a variety of standard system trends.
On-line documentation – provides users access to system information and
documentation.
Interfaces – Data acquisition ability from a wide variety of remote terminal
units and controllers.
Other powerful supervisory control features include:
•
•
•
•
•
•
•
•
•
Integrated detail displays, custom graphics, alarms, history, and reports
Standard control functions
Operator security
Redundant Windows XP/server operation
A common interface for SCADA and other control types such as Hybrid
Control
Database and diagnostic integration with process and discrete controllers
Graphical building tools
Standard and user-definable application templates
International system and local language support
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•
Optional applications such as Alarm Pager interface, Downtime Analysis,
and statistical Process Quality Control
Standard facilities shall include but not limited to the followings:
•
Windows based HMI
Multiple local and remote operator stations
Interface: TCP/IP, fieldbus, Modbus, Hart
•
Support for redundant controller/RTU communications
Integration of multiple systems
Real-time data access for a wide variety of process connected devices
• Supervisory data acquisition and control of controllers and remote terminal
units
• alarm management
• Extensive historian and trending
• Flexible standard or customized reports
• Optional Live Video Capture integration
• Industry standard local and wide area network integration
• Secure data integration with third party applications
• ActiveX Document and Scripting support
C-6
Operator Interface
The operator interface station shall allow object based graphics to provide the
HMI for the user with object concern. The system shall employ industry de-factor
standards, such as Microsoft Windows, HTML and the Internet so as to minimize
operator training due to familiarity of operating environment.
Critical information is conveyed using dedicated enunciators for alarms, controller
communication failures, operator/controller messages and equipment downtime
conditions. A dedicated alarm line shows the most recent (or oldest) highest priority,
unacknowledged alarm at all times.
Software system displays shall include but not limited to the followings: • Menu/navigation displays
• Alarm summary
• Event summary
• Trends
• Operating groups
• System status displays
• Configuration displays
• Loop Tuning displays
• Diagnostic and maintenance displays
• Summary displays
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Optional Live Video integration shall provide remote viewing and viewing control
features.
Security software feature shall provide restricted access, no access and full access
(plant management).
Network access shall permit authorized operator stations on a network to share a
preconfigured number of connections to the system. This allows a number of users
on a network to access production data on off-line basis.
C-7
Database
The SCADA software shall but not limited to the following real-time database:
• Analog configuration parameters
• Digital configuration parameters
• Accumulator configuration parameters
• User defined configuration parameters
Each point in the database has a number of associated configurable parameters, all
of which can be referenced relative to a single ‘tag name’.
SCADA shall maintain the real time database that requires frequent high-speed
access as memory resident information and other less frequently accessed data as
disk resident data. Memory resident data is logged to data storage device every
specified time frame defined by the administrator to minimize the loss of data in
the event of loss of power.
C-8
Alarm/Event Management
The SCADA software System shall provide comprehensive alarm and event detection,
management, and reporting facilities. Alarm presentation of alarm / event management
shall include but not limited to the followings:
•
•
•
•
•
•
•
•
Multiple alarm priorities
Dedicated alarm zone
Configurable alarm priority colors
Associated display
Audible alarms
Alarm cutout
Area assignment
Operator log
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•
•
•
•
Hierarchical alarming
Alarm/event reporting
Alarm/communication/ message/downtime annunciator
Alarm priority escalation
The standard Alarm Summary display shall allow operators to focus on the problem
at hand by supporting filters. Alarms may be filtered by:
•
•
•
Area or location or unit processes
Acknowledge Status
Priority
Colors for the various priority levels of alarms can be configured by the user for
display purposes in the Alarm Summary and on custom graphics. The recommended
color codes are provided in Appendix 1. The software shall support configuration
of alarm priority colors and display on all process graphic displays to enables
operators immediately determine critically of the alarm.
The alarm shall annunciate in the status zone blinks with the color of the highest
priority for unacknowledged alarm. The alarms configuration shall consist but not
limited to the followings:
•
•
•
•
•
•
SPV Hi
SPV Lo
Transmitter Hi
Transmitter Lo
Trip
Time out
With each of the configured alarms assigns a priority ranging from "Attention" acknowledge of non-critical alarm that required maintenance attention, "Responsive"
- action required with predefined period, "Urgent" - action required immediately.
The Alarm/Event summary shall list but not limited to the followings:
• Alarms
• Alarm Acknowledgments
• Return to normal
• Operator Control Actions
• Operator Login & Security Level Changes
• On-line Database Modifications
• Communications Alarms
• System Restart Messages
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C-9
Historian
Historical trend shall provide wide range of sampling frequencies in both datapoint and average formats. The history trend intervals are shall be able to but not
limited to the following displays:
• second data-point of pre-defined scale
• minute data-point of pre-defined scale
• hour data-point of pre-defined scale
• minute-average of pre-defined scale
• hour-average of pre-defined scale
• day-average of pre-defined scale
• Month-average of pre-defined scale
The historical data is to be display in various formats describe herewith:
• Graphical trend plot displays (average, max, min, and other statically
format)
• Tabulation displays (average, max, min, and other statically format)
• Query databases of selected parameters.
C-10 Graphical Trending
Graphical trending configuration shall be able to configure by selecting the parameters
to be plot and its time-scales. Minimum trend types shall include but not limited
to the followings:
• Single and Multi bar graphs (selectable scales)
• Single and Multi-line trends plot (selectable scales)
• Multi-range trends plot (selectable scales)
• X-Y line and scatter trend plots (selectable scales)
•
Mathematical plots (logarithm scale, moving average, etc)
Functions provided for analyzing and manipulating data include:
• Combination real-time/historical plots
• zooming, panning, and scrolling
• Configurable trend density
• Saving of trend plot and expert to various format (*.xls, HTML, XLM,
etc)
• clipboard copy/paste enable
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C-11 Report Format
The software shall provide but not limited to the following report formats:
•
•
•
•
Alarm/Event Log reports - selectable time frame, filterable events and
alarms to enable traceability of alarm.
Exportable Excel / Access format - able to save selected data/report format
to Microsoft Excel/Access format.
Statistical data analysis format - generates reports of selectable statistical
functions such as Max/Min and standard deviation.
Point Attribute Log - displaying specific attributes selectable from a
list.
Reports should be generated as required time frame (interval), event-driven, or ondemand basis. Report may be directed to screen, printer, file, or directly to another
computer for analysis or viewing electronically.
C-12 Security
The SCADA software shall provide configurable security levels, control levels
and area assignments. These may be configured for each individual operator or
alternatively for each operator station. The security levels shall be able to configure
the following security levels:
Level
Level
Level
Level
1:
2:
3:
4:
Sign-on for View mode only
View only mode with alarm acknowledge
Level 2 plus control of field parameters
Level 3 plus field parameters of level 4, configure standard system
infrastructure such as reports
Level 5: Level 4 plus user configured field parameters
Level 6: Unlimited access
Operator sign-on/sign-off shall be logged. Any actions initiated by an operator are
logged in the Event database with the operator identifier. In addition any control
actions to a given point is only allowed if the control level configured in the
operator profile exceeds the level assigned to the point.
Logon password shall not be less than 6 alphanumeric characters and shall be
encrypted. Operators may change own passwords; however, new password shall
not be the same as the last 10 passwords used in the previous 3 months. Three
unsuccessful attempts of logon shall lock the operator out for a lock-out period.
Once logged on, an operator can log off at any time or will be automatically signed
off after a defined period of inactivity.
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Area assignments limit operator access to graphics, alarms and point data to assigned
areas, providing effective plant partitioning. Individual operator profiles, including
security levels, control levels and area assignments, are activated when operators
sign on to the system. In addition, area profiles can be created enabling plant areas
to be enabled or disabled for control, between certain time and date criteria.
C-13 Scripting
The software shall have the VB or VBA scripting language enable to allow user to
create script that will run when a display is active or scripts can also be attached
to server objects like point parameters, alarm events, report completion and other
events.
C-14 Interfaces
SCADA software provides Data Acquisition and Control facilities to communicate
with a wide range of controllers and Remote Terminal Units (RTUs). The controllers
connection type shall comply with the following communication protocol:
Serial / TCP/IP / ControlNet / Modbus+ / ASCII / TCP/IP / Ethernet
Data Acquisition –supports acquisition of data using either:
Periodic Scanning
C-15 Distributed Server Architecture
Distributed Server Architecture is integrated processes when there are multiple control
stations, or for segmenting control across units, providing the ultimate flexibility
for both operations and control. Distributed Server Architecture also provides the
maximum flexibility for geographically distributed sites.
C-16 Web Server
SCADA software shall provide Web Server capability to provide integration
mechanism for plant-centric operational information. Based on the SCADA software
Distributed Server Architecture, a web server bridges the Process Control and
Enterprise domains, dynamically tracking the “pulse” of the enterprise. Web server
brings many benefits to the end user:
•
•
Isolation of non-critical enterprise functions from the process control
system
Consolidated business system integration to/from many SCADA software
systems
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•
•
•
Consolidation of casual users’ accounts and licenses in one location
Cross-system reporting
Minimal engineering requirements
C-17 Digital Video Monitoring
The software may have optional Digital Video Monitoring that integrates digital
video controls and storage with the software to assist in process monitoring. Some
of the features are:
•
•
•
•
•
Remote monitoring of unmanned sites
Integration with SCADA software, providing event-based capture and
storage of video images
Event-activated, user-activated, and scheduled recording
Ability to search stored video, based on SCADA software events
Scalability from 4 cameras to more than 1,000 cameras.
The DVM shall base on open system hardware that digitizes video from standard
video cameras and transports the video to SCADA software clients anywhere on
the network for real-time viewing.
C-18 Integrated Maintenance Management
Integrated Maintenance Management (IMM) delivers computerized maintenance management
system (CMMS) – completely integrated with SCADA software. IMM shall deliver but
not limited to the following key benefits:
•
•
•
•
More efficient preventive and predictive maintenance
Reduced downtime of critical plant equipment
Effective work scheduling
Automated creation of work orders from SCADA software events and data
values
IMM enables the automated creation, assignment, tracking and closing of maintenance
work orders. If required, work orders can also be manually raised. This is all
managed from either your IMM SQL server database with full access available
through the open Web-based interface of IMM.
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C-19 Application Report
The SCADA software shall have the capability to produce but not limited to the
following reports:
•
•
•
•
•
•
Batch Report
Downtime analysis
Schedule maintenance
Statistical Process & Quality Control (SPQC)
Event archiving
Alarm messaging (SMS or pager)
Batch Reporting –integrated reporting of batches process data, to be compiled
and archived by the SCADA software. The batch reports either as a CSV file or
Microsoft Excel, if available.
Downtime Analysis –to detect, record and code any equipment breakdowns or process
delays to provide plant downtime analysis. A list of all current downtime events is
maintained as well as the history of previous downtime events, with each assigned
a category and a reason code. Downtime reports may be printed periodically or
on-demand, showing downtime duration sorted by categories and reasons.
Schedule Maintenance –allows supervisory control to schedule at a specified time.
The maintenance report of the equipment is to be reported.
Statistical Process & Quality Control (SPQC) - generates statistical report of average
(of specified time period) of the real-time data collected by the system.
Event Archiving –archiving events logged data by the system that based on sampling
frequency and storage capacity.
Alarm Messaging – reports the alarm messages sent designated supervisors. The report
shall incorporate summary of alarm messages by alarm type and supervisors.
C-20 Application Programming Interface
Application programming interface (API) shall be provided for interfacing with
SCADA software server and the client network based.
The API (programmed in C/C++(visual) or programmed in VB (Visual Basic)) on
the server includes the following functions:
•
•
read and write to control module parameters in the database
access to historical data
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•
•
•
•
•
initiate supervisory control actions
access to the alarm/event subsystem
access to user-defined database
provide a prompt for operator input
create alarms/events
C-21 User Documentation
SCADA software documentation shall be made available in three basic forms:
•
•
•
Electronic On-line Documentation using HTML Internet Browser
On-line Help (F1 function key from within applications)
Printed documentation
C-22 Specifications and Sizing
SCADA software Client/Server Specifications
Basic Server Workstation Specifications
Processor
Memory
Hard Disk Size
Display Resolution
Operating System (Minimum)
Network Protocols
Pentium Processor (Latest version)
1 GB
200 GB
1024 x 768, 65K colors
Microsoft Windows (Latest edition)
TCP/IP
Basic Client Workstation
Specifications
Processor
Memory
Hard Disk Size
Display Resolution
Operating System (Minimum)
Network Protocols
248
Pentium Processor (Latest version)
1 GB
200 GB
1024 x 768, 65K colors
Microsoft Windows NT (Latest
edition)
TCP/IP, NFS
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Appendix C - Supervisory Control and Data Acquisition System (SCADA)
SCADA software Server Performance
Operational Display Update
Maximum Continuous Display Update Rate
1 sec
Typical Field Change to Display Update Time with
100 Parameters Per Display on a Single Station/
Server
< 2 sec
Typical Display Call Up Time with 100 Parameters
on a Single Station/Server (call up time is dependent
on display complexity; this excludes the first initial
call up)
< 2 sec
SCADA Storage Sizing
Standard
Sampling
Rate
Default
Duration
1 minutes
24 hours
1441
69 days
100 000
6 minute
average
7 days
1682
416 days
100 000
1 hour
average
7 days
170
11.4 years
100 000
8 hour
average
3 months
281
91.2 years
100 000
24 hour
average
1 year
368
273.8 years
100 000
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Default
Samples
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Maximum
Duration
Storage Capacity
(maximum no. of
samples)
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Appendix C - Supervisory Control and Data Acquisition System (SCADA)
Attachment C - 1:
Status/Alarm
Event State
250
Color Coding for Equipment Status
Color & Blinking
Status
Notes of Event
Running
Green (Non-Blinking)
Equipment is in operating
status
Standby
Red (Non-Blinking)
Equipment is in standby
operating status
Off
Red (Blinking)
Equipment is “Off” or “Manual”
mode.
Trip
Amber (Blinking):
Equipment “Tripped” due to the
followings reasons:
1) ELR detection;
2) PSR detection;
3) Over-current;
4) Over-heated motor;
5) MCB Trip;
SP High Level
Yellow (Non-Blinking)
Alarm event of high level than
set point
SP Low Level
Light Blue (NonBlinking)
Alarm event of lower level than
set point
Transmitter Hi
Yellow (Blinking)
Alarm event due to transmitter
high (<=4mA) value.
Transmitter Lo
Light Blue (Blinking)
Alarm event due to transmitter
low (<=4mA) value.
Time Out
Amber (Blinking)
Alarm due to time out by PLC
timer or other timer.
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Appendix C - Supervisory Control and Data Acquisition System (SCADA)
Instrumentation Panel - Local
Instrumentation Panel - Remote
Instrumentation Panel - Battery
Low
TNB Power (kWh meter)
PLC System
PLC (battery Low)
DO
DI
AO
1
1
Indicator
1
1
Data Record
1
1
Indicator
1
1
Measure
Battery Charger
Penstock
SCADA Control /
Monitoring
Indicator
Indicator
Analog (A)/
Digital (D)
AI
Description
of Control
Point
(For Each
Equipment)
Description of Monitoring
Point
(For Each Equipment)
Instrumentation
Panel
SCADA Control and Monitoring Function
Requirement
Qty
Item
Attachment C - 2:
1
1
1
1
Alarm Low (Fault Report)
Alarm (Fault Report)
Penstock Panel: Manual Switch
Indicator
1
1
Penstock Position Actuator (%)
IP open close
control
1
RTU via RS-485 Serial Link
Alarm - High torque
Penstock - Fully Open
Indicator
1
1
Penstock Panel: Auto Switch
Penstock - Fully Close
Penstock - To Open / To Close
Penstock - UPS Low
UPS (battery Low)
Penstock
Primary Coarse Screen
Indicator
Inlet
Indicator
Remote
Control
Indicator
Measure
1
1
1
1
1
1
1
1
1
1
Screen - Trip
Indicator
1
1
Alarm (Fault Report)
Screen - Manual Mode
1
1
Screen - To Start / Stop
1
1
Screen - Run-hour record
Indicator
Remote
Control
Reset of HourRun meter
0
Software counter running hours
Differential Level : Upstream
1
1
Differential
Downstream
Control Start / Stop operation by
diff. level
Screen - Run
Indicator
Screen - Auto Mode
Level
RSP Pumps
Pump - Run
Pump - Trip
Pump - Off (MCCB)
Pump - To Start / Stop
Pump - Run-hour record
Pump - Ampere
Pump - Voltage
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Indicator
Indicator
:
Indicator
Indicator
Indicator
Indicator
Remote Start/
Stop
Reset of HourRun meter
Reading
Reading
1
1
1
1
1
1
Counter - Number of start / stop
Ref level for upstream.
1
1
1
1
1
1
Record number of Start / stop
Alarm (Fault Report)
Record non-operation hours
1
1
Software control / PLC
0
Software counter running hours
1
1
1
1
Record when operation
Record when operation
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AO
DI
DO
1
1
RJ45 / RS485
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Cut-off operation
Control Start / Stop operation
by diff. level
Control Start / Stop operation
by diff. level
Control Start / Stop operation
by diff. level
Control Start / Stop operation
by diff. level
For fault identification (Alarm
Fault report)
For fault identification (Alarm
Fault report)
For fault identification (Alarm
Fault report)
For fault identification (Alarm
Fault report)
For fault identification (Alarm
Fault report)
1
Record number of Start / stop
1
Record non-operation hours
Pump - Soft Starter Amp/Volt
Comm.
Parameters Setting
/ Review
Float level
US Level
Float Level - L0 On/Off
Float Level - L1 On/Off
Level
measurement
Float Level - L2 On/Off
Indicator
Float Level - L3 On/Off
Indicator
Float Level - L4 On/Off
Indicator
Float Level - L0 Fault
Indicator
Float Level - L1 Fault
Indicator
Float Level - L2 Fault
Indicator
Float Level - L3 Fault
Indicator
Float Level - L4 Fault
Indicator
Sump Pump / Dewatering
Pump
Pump - Run
Indicator
1
Pump - Off (MCCB)
Pump - To Start / Stop
1
Pump - Trip
Indicator
Indicator
Indicator
Pump - Run-hour record
Ampere / Volmeters
Indicator
Remote Start /
Stop
Reset of Hour-Run
meter
Pump - Ampere
Reading
Float level
Pump - Voltage
1
1
Alarm (Fault Report)
1
1
Software control / PLC
0
Software counter running hours
1
1
Record when operation
1
1
Record when operation
1
1
Indicator
1
1
Screen - Run
Indicator
1
1
Record number of Start / stop
252
Screen - Trip
Screen - Auto Mode
Screen - Manual Mode
Screen - To Start / Stop
Indicator
1
Indicator
Indicator
1
Remote Control
1
1
Volume 4
1
1
1
Indicator
1
Float Level - L0 Fault
1
Float Level - L1: ON / OFF
Indicator
1
Float Level - L1 Fault
Secondary Fine Screen
Indicator
Cut-off operation
Control Start / Stop operation
by diff. level
For fault identification
Float Level - L0: ON / OFF
Reading
SCADA Control /
Monitoring
AI
Description of
Control Point
(For Each
Equipment)
Description of Monitoring
Point
(For Each Equipment)
Analog (A)/
Digital (D)
Qty
Item
Appendix C - Supervisory Control and Data Acquisition System (SCADA)
1
1
For fault identification
Alarm (Fault Report)
Malaysian Sewerage
Industry Guidelines
Screen c/v - Trip
Screen c/v - Run
Screen c/v - Auto Mode
Screen c/v - Manual Mode
Screen c/v - To Start / Stop
DO
DI
Mechanical Differential Level :
Upstream
Mechanical Differential Level :
Downstream
Screenings Conveyor
AO
Screen - Run-hour record
AI
Description of
Control Point
(For Each
Equipment)
Description of Monitoring
Point
(For Each Equipment)
Analog (A)/
Digital (D)
Qty
Item
Appendix C - Supervisory Control and Data Acquisition System (SCADA)
SCADA Control /
Monitoring
0
Software counter running hours
Indicator
1
1
Indicator
1
1
Ref level for upstream.
Indicator
1
1
Record number of Start / stop
Reset of Hour-Run
meter
Indicator
1
Indicator
1
Indicator
Remote Control
1
1
1
1
1
1
Control Start / Stop operation
by diff. level
Alarm (Fault Report)
Screen c/v - Run-hour record
Reset of Hour-Run
meter
0
Screenings Wash Water Pumps
Software counter / Interlock
with screen operation with delay
off.
Wash-water Pump - Trip
Indicator
1
1
Alarm (Fault Report)
Wash-water Pump - Run
Wash-water Pump - Auto Mode
Wash-water Pump - Manual
Mode
Wash-water Pump - To Start /
Stop
Indicator
1
Indicator
1
1
1
Indicator
1
1
Remote Control
1
1
Wash-water Pump - Run-hour
record
Reset of Hour-Run
meter
0
Grit Blower - Run
Indicator
Indicator
1
Software counter / Interlock
with screen operation with delay
off.
1
1
Alarm (Fault Report)
Grit / Grease System
Grit Blower - Trip
Grit Blower - Auto Mode
Grit Blower - Manual Mode
Grit Blower - To Start / Stop
Indicator
1
Indicator
Remote Control
1
1
1
1
1
1
Grit Blower - Run-hour record
Reset of Hour-Run
meter
0
Grit Pump : On
Indicator
1
1
Grit Pump - To Start / Stop
Remote Control
1
1
Record number of Start / stop
Grit Pump : Trip
Indicator
1
1
Record number of Start / stop
Software counter / software
Timer control operation by
rotation.
Record number of Start / stop
Alarm (Fault Report)
Grit Pump - Run-hour record
Reset of Hour-Run
meter
0
Grit Classifier : On
Indicator
1
1
Software counter / software
Timer control operation by
rotation.
Record number of Start / stop
Grit Classifier - To Start / Stop
Remote Control
1
1
Grit Classifier : Trip
Indicator
1
1
Grit Classifier - Run-hour record
Reset of Hour-Run
meter
0
Grit Auger : On
Indicator
1
1
Grit Auger : Trip
Sewage Treatment Plants
Indicator
1
Volume 4
1
Alarm (Fault Report)
Software counter / software
Timer control operation by
rotation.
Record number of Start / stop
Alarm (Fault Report)
253
Description of
Control Point
(For Each
Equipment)
AO
DI
DO
SCADA Control /
Monitoring
AI
Description of Monitoring
Point
(For Each Equipment)
Analog (A)/
Digital (D)
Qty
Item
Appendix C - Supervisory Control and Data Acquisition System (SCADA)
Grit Auger - To Start / Stop
Remote Control
1
1
Grit Auger - Run-hour record
Reset of Hour-Run
meter
0
Grit Drum Screen : On
Indicator
1
1
Software counter / software
Timer control operation by
rotation.
Record number of Start / stop
Remote Control
1
1
Grit Drum Screen : Trip
Grit Drum Screen - To Start /
Stop
Grit Drum Screen - Run-hour
record
Reset of Hour-Run
meter
0
Auxiliary
Software counter / software
Timer control operation by
rotation.
Indicator
1
1
Status
Indicator
1
1
Alarm (Fault Report)
Indicator
1
1
Alarm (Fault Report)
Reading
1
1
Record
Reading
1
1
Record
Reading
1
1
Indicator
1
1
Reading
1
1
Record
LV System
Main LV Board Main Breaker
: ON
Main LV Board Main Breaker :
TRIP (Earth Fault)
Main LV Board Main Breaker :
TRIP (Over Current)
Main LV Board Main Breaker :
Ampere
Main LV Board Main Breaker :
Voltage
Room Temperature Monitoring
/ Alarm
Bus Couple : ON
kWHr Meter:
HT System
Bus Couple : OFF
HT Income Panel VCB : ON
HT Income Panel VCB: TRIP
(Earth Fault)
HT Income Panel VCB: TRIP
(Over Current)
HT Income Panel VCB: Ampere
Battery Charger
HT Income Panel VCB: Voltage
Battery Low
Room Temperature Monitoring
/ Alarm
254
Indicator
Indicator
Indicator
1
1
1
1
1
1
Alarm (Fault Report)
Status
Indicator
1
1
Alarm (Fault Report)
Indicator
1
1
Alarm (Fault Report)
Reading
1
1
Record
Indicator
1
1
Record (Alarm fault)
Reading
Indicator
1
1
1
1
Record
Record (Alarm Low)
Reading
1
1
Record / Alarm (High)
kWHr Meter
Transformer System
Reading
1
1
Record
Transformer Pressure Alarm
CO2 System
TNB Room: CO2 Panel
Activated
Switch Gear: CO2 Panel
Activated
Transformer Room: CO2 Panel
Activated
Indicator
1
1
Record / Alarm (High)
Transformer Temperature Alarm
Indicator
1
1
Record / Alarm (High)
Indicator
1
1
Record / Alarm (activated)
Indicator
1
1
Record / Alarm (activated)
Indicator
1
1
Record / Alarm (activated)
Volume 4
Malaysian Sewerage
Industry Guidelines
CO2 Panel DC supply Battery
Low
Gen Set System
Gen Set - Trip
Gen Set - Run
Gen Set - To Start / Stop
(Remote)
Gen Set - To Stop (Remote)
Gen Set - Run-hour record
Gen Set -Battery Charge
Gen Set -DC Battery Low
Gen Set -Diesel Fuel oil low
Surge Vessel Compressors
System
Air Compressor - Run
Air Compressor - Auto Mode
Air Compressor - Trip
Air Compressor - Manual Mode
Air Compressor - To Start / Stop
Air Compressor - Run-hour
record
Surge Vessel Level Indicator
Fan : Manual
Surge Vessel Pressure Indicator
Force Ventilation: Grit System
Fan : Auto
Fan : ON / OFF
Indicator
Indicator
Indicator
Indicator
Remote Start /
Stop
Remote Start /
Stop
Reset of Hour-Run
meter
Indicator
Indicator
1
1
Record / Alarm (activated)
1
1
Record / Alarm (activated)
1
1
Record / Alarm (activated)
1
1
Record number of Start / stop
1
1
Alarm (Fault Report)
1
1
Software control / PLC
1
1
Software control / PLC
1
Software counter running hours
1
1
Record / Alarm (Fault)
1
1
Record / Alarm (Low)
1
Record / Alarm (Low)
Indicator
1
1
Record number of Start / stop
Indicator
1
1
Indicator
1
Indicator
Remote Control
Reset of Hour-Run
meter
Level Measure
Pressure Measure
Indicator
Indicator
Indicator
Scrubber Fan : Auto
Scrubber Fan : ON / OFF
Indicator
Indicator
Indicator
Scrubber Fan : Trip
Scrubber Fan : To Start / Stop
Aeration Blower
Indicator
Remote Start /
Stop
Blower - Trip
Indicator
Sewage Treatment Plants
Record / Alarm (activated)
Blower - Off (MCCB)
Gas Scrubber System
1
Blower - Run
Indicator
Remote Start /
Stop
1
Indicator
Fan : Trip
Fan : To Start / Stop
Scrubber Fan : Manual
1
Indicator
DO
Indicator
DI
Main Switch Room: CO2 Panel
Activated
MCC Room: CO2 Panel
Activated
Gen Set- CO2 Panel Activated
SCADA Control /
Monitoring
AO
Description of Monitoring
Point
(For Each Equipment)
Analog (A)/
Digital (D)
AI
Description of
Control Point
(For Each
Equipment)
Qty
Item
Appendix C - Supervisory Control and Data Acquisition System (SCADA)
Indicator
Indicator
1
1
1
1
1
Alarm (Fault Report)
0
Software counter running hours
1
1
1
1
1
1
1
1
Status & Software counter
running hours
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Record number of Start / stop
1
Volume 4
1
1
1
1
Status & Software counter
running hours
Alarm (Fault Report)
Alarm (Fault Report)
Alarm (Fault Report)
Record non-operation hours
255
Appendix C - Supervisory Control and Data Acquisition System (SCADA)
Blower - Ampere
Blower - Voltage
Temperature Sensor
Blower - Temperature
Air Flow Meter
Air Flow Meter
Force Ventilation: Blower
Room
Fan : Manual
Fan : Trip
Fan : Run-Hour record
Fan : Auto
Fan : ON / OFF
Fan : To Start / Stop
D.O. Meter
D.O. Meter
Anoxic Mixer
Anoxic Mixer - Run
Anoxic Mixer - Trip
Anoxic Mixer - Off (MCCB)
Anoxic Mixer - To Start / Stop
Anoxic Mixer - Run-hour record
Anoxic Mixer - Ampere
Anoxic Mixer - Voltage
Primary or Secondary Clarifier
Clarifier - Run
Clarifier - Trip
Clarifier - Off (MCCB)
Clarifier - To Start / Stop
Clarifier - Run-hour record
Clarifier - Ampere
256
Clarifier - Voltage
Reset of Hour-Run
meter
Measure
Measure
1
Software control / PLC
1
1
0
1
1
RTU via RS-485 Serial Link
Software counter / software
Timer control operation by
rotation.
Record when operation
Measure
1
Measure
1
Indicator
Indicator
Indicator
Remote Start /
Stop
Reset of Hour-Run
meter
Indicator
Indicator
Remote Start /
Stop
Reset of Hour-Run
meter
Measure
Measure
Indicator
Remote Start /
Stop
Reset of Hour-Run
meter
Measure
1
Record when operation
Record & Alarm (High Temp)
Record & Alarm (low level)
1
1
1
1
1
1
Status & counter no. of start /
stop
Alarm (Fault Report)
1
1
1
1
1
1
1
1
1
Status & counter no. of start /
stop
Alarm (Fault Report)
1
1
Software control / PLC
0
Software counter
1
1
Record when operation
1
1
Indicator
1
Indicator
Measure
1
1
Indicator
Measure
1
1
Indicator
DO
Blower - Run-hour record
DI
Blower - VSD Parameters
AO
Remote Start /
Stop
Speed Control
SCADA Control /
Monitoring
AI
Blower - To Start / Stop
Analog (A)/
Digital (D)
Qty
Item
Description of
Control Point
(For Each
Equipment)
Description of Monitoring
Point
(For Each Equipment)
1
1
Record / Control Speed &
Alarm (Low)
Record non-operation hours
Record when operation
1
1
1
1
1
Software control / PLC
0
Software counter
1
1
Record when operation
1
Volume 4
1
1
Software counter / software
Timer control operation by
rotation.
1
1
Status & counter no. of start /
stop
Alarm (Fault Report)
1
Record non-operation hours
Record when operation
Malaysian Sewerage
Industry Guidelines
Appendix C - Supervisory Control and Data Acquisition System (SCADA)
Description of
Control Point
(For Each
Equipment)
Analog (A)/
Digital (D)
AI
AO
DI
DO
SCADA Control /
Monitoring
Qty
Item
Description of Monitoring
Point
(For Each Equipment)
Pump - Run
Indicator
1
1
Pump - Trip
Indicator
1
Pump - To Start / Stop
1
1
Software control / PLC
Pump - Run-hour record
0
Software counter
Pump - Ampere
Indicator
Remote Start /
Stop
Reset of Hour-Run
meter
Measure
1
Status & counter no. of start /
stop
Alarm (Fault Report)
1
1
Record when operation
RAS/WAS Flow Rate Meter
Pump - Off (MCCB)
Pump - Volt
Sludge Flow Meter
RAS/WAS Flow Rate Totalizer
Flow Meter System
Flow Meter
(Data record of flow rate)
Measure
1
1
Measure
1
Measure
1
1
1
1
1
Record non-operation hours
Record when operation
Record
Record
Measure
1
1
Record
Flow Meter (Totalizer)
Gravity Thickener
Measure / Reset
1
1
G. Thickener - Run
Indicator
1
1
G. Thickener - Trip
Indicator
1
1
SCADA Software Accumulator
Status & counter no. of start /
stop
Alarm (Fault Report)
G. Thickener - To Start / Stop
1
1
G. Thickener - Run-hour record
0
G. Thickener - Ampere
1
1
G. Thickener - Off (MCCB)
G. Thickener - Voltage
Thickened Sludge Digester Feed
Pump: Primary & Secondary
Indicator
Remote Start /
Stop
Reset of Hour-Run
meter
Measure
Measure
1
1
1
1
Feed Pump - Run
Indicator
1
1
Feed Pump - Trip
Indicator
1
1
Feed Pump - To Start / Stop
1
1
Feed Pump - Run-hour record
0
Feed Pump - Ampere
Indicator
Remote Start /
Stop
Reset of Hour-Run
meter
Measure
1
1
Feed Pump - VSD Parameters
Speed Control
1
1
Sludge Feed Flow Rate Meter
Measure
1
1
Feed Pump - Off (MCCB)
Feed Pump - Voltage
Sludge Flow Meter
Sludge Feed Flow Rate Totalizer
Gas Blower
Measure
Measure
1
1
1
1
1
1
1
Gas Blower - Trip
Indicator
1
1
Sewage Treatment Plants
Volume 4
1
Record non-operation hours
Software control / PLC
Software record of running
hours
Record when operation
Record
1
1
Status & counter no. of start /
stop
Alarm (Fault Report)
Indicator
Indicator
Record when operation
Gas Blower - Run
Gas Blower - Off (MCCB)
Software control / PLC
Software record of running
hours
Record when operation
Record when operation
Speed control : RTU via RS-485
Serial Link
Record non-operation hours
Record
Status & counter no. of start /
stop
Alarm (Fault Report)
Record non-operation hours
257
Gas Blower - Run-hour record
Gas Blower - Ampere
Gas Blower - Temperature
Measure
Gas Blower - Voltage
Temperature Sensor
Gas Flow Meter
Gas Flow Meter
Digester Gas Detector Meters
Measure
Measure
DO
Remote Start /
Stop
Reset of Hour-Run
meter
Measure
DI
Gas Blower - VSD Parameters
SCADA Control /
Monitoring
AO
Analog (A)/
Digital (D)
AI
Description of
Control Point
(For Each
Equipment)
Description of Monitoring
Point
(For Each Equipment)
Qty
Item
Appendix C - Supervisory Control and Data Acquisition System (SCADA)
1
1
0
1
1
Speed control : RTU via RS-485
Serial Link
Software record of running
hours
Record when operation
1
1
Record & Alarm (High)
1
1
1
1
Record when operation
Record
Record & Alarm (Detection &
Fault)
Record & Alarm (Detection &
Fault)
Record & Alarm (High-Low &
Fault)
Record & Report
Record & Alarm (High-Low &
Fault)
Alarm (High)
H2S Meter at Dewatering House
Measure
1
1
Methane Gas Meter
Measure
1
1
PVRV Sensor Meter
Measure
1
1
Internal Digester Gas Analyzer
Floating Roof Gas Holder
Measure
1
1
Floating Roof Level
Measure
1
1
High Lever Alarm
Indicator
1
1
PVRV Sensor Meter
Measure
Alarm (Low)
Record & Alarm (High-Low &
Fault)
Indicator
1
1
Record & Timer
Indicator
1
1
Record & Timer
Indicator
1
1
Indicator
1
1
Program Control operation
Indicator
1
1
Status & counter no. of start /
stop
Indicator
1
1
Alarm (Fault Report)
1
1
Software control / PLC
1
1
Software control / PLC
1
1
Low Lever Alarm
Gas Flare System
Gas Control Actuator
Open
Gas Control Actuator
Close
Gas Control Actuator
Manual
Gas Control Actuator
Auto
Indicator
Valve: Full
Valve: Full
Valve:
Valve:
Gas Control Actuator Valve: ON
1
1
Gas Control Actuator Valve:
TRIP
Gas Control Actuator Valve: To
Turn Clockwise
Gas Control Actuator Valve: To
Turn Counter-Clockwise
Flare Igniter : Manual
Indicator
1
1
Flare Igniter : ON
Indicator
1
1
Pilot Light Igniter
Flare Igniter : Auto
Remote Start /
Stop
Remote Start /
Stop
Indicator
Indicator
1
1
Record & Alarm (flame
distinguished)
Program Control operation
Flare Indicator
Indicator
1
1
Pressure Indicator: Inlet
Measure
1
1
Program Control operation
Record & Alarm (flame
distinguished)
Record & Report Fault
Belt Press Feed Pump - Manual
Indicator
1
1
258
Pressure Indicator: Discharge
Sludge Feed Pump to Belt Press
Measure
1
Volume 4
1
Record & Report Fault
Malaysian Sewerage
Industry Guidelines
Description of
Control Point
(For Each
Equipment)
AO
DI
DO
SCADA Control /
Monitoring
AI
Description of Monitoring
Point
(For Each Equipment)
Analog (A)/
Digital (D)
Qty
Item
Appendix C - Supervisory Control and Data Acquisition System (SCADA)
Belt Press Feed Pump - Auto
Indicator
1
1
Belt Press Feed Pump - Run
Indicator
1
1
Belt Press Feed Pump - Trip
Belt Press Feed Pump - Off
(MCCB)
Belt Press Feed Pump - To Start/
Stop
Belt Press Feed Pump - Run-hour
record
Belt Press Feed Pump - Ampere
Indicator
1
1
Program Control operation
Status & counter no. of start /
stop
Alarm (Fault Report)
Indicator
1
1
Record non-operation hours
1
1
Software control / PLC
0
1
1
Speed Control
1
1
Indicator
1
1
Belt Press Feed Pump - Voltage
Belt Press Feed Pump - VSD
Parameters
Belt Press Compressors System
Air Compressor - Trip
Air Compressor - Run
Air Compressor - Auto Mode
Air Compressor - Manual Mode
Air Compressor - To Start/Stop/
Stop
Air Compressor - Run-hour
record
Sludge Cake Conveyor
Screen c/v - Trip
Screen c/v - Run
Screen c/v - Auto Mode
Screen c/v - Manual Mode
Screen c/v - To Start / Stop / Stop
Screen c/v - Run-hour record
Belt Backwash Washwater
Pumps
Washwater Pump - Run
Washwater Pump - Auto Mode
Washwater Pump - Trip
Washwater Pump - Manual Mode
Washwater Pump - To Start /
Stop / Stop
Remote Start /
Stop
Reset of Hour-Run
meter
Measure
Measure
1
Indicator
1
Indicator
1
Indicator
1
Remote Control
Reset of Hour-Run
meter
Indicator
Indicator
Indicator
Remote Control
1
1
1
Record when operation
Speed control : RTU via RS-485
Serial Link
Alarm (Fault Report)
Record number of Start / stop
Program Control operation
1
1
Software control / PLC
0
Software counter running hours
1
1
Alarm (Fault Report)
1
1
Indicator
1
Software record of running
hours
Record when operation
1
1
1
Program Control operation
Indicator
1
1
Record number of Start / stop
Indicator
1
1
Program Control operation
Indicator
1
1
1
1
Record number of Start / stop
0
1
Reset of Hour-Run
meter
1
Software counter / Interlock
with screen operation with delay
off.
Indicator
1
Alarm (Fault Report)
Remote Control
1
1
Washwater Pump - Run-hour
record
Reset of Hour-Run
meter
0
Polymer Preparation Unit
Software counter / Interlock
with screen operation with delay
off.
Polymer Mixing - Trip
Indicator
1
1
Alarm (Fault Report)
Polymer Mixing - Run
Polymer Mixing - Auto Mode
Polymer Mixing - Manual Mode
Polymer Mixing - To Start / Stop
Sewage Treatment Plants
Indicator
1
Indicator
Indicator
1
Remote Control
1
1
Volume 4
1
1
1
1
Software control / PLC
Record number of Start / stop
Program Control operation
Software control / PLC
259
Appendix C - Supervisory Control and Data Acquisition System (SCADA)
Description of
Control Point
(For Each
Equipment)
AI
AO
DI
DO
SCADA Control /
Monitoring
Qty
Item
Description of Monitoring
Point
(For Each Equipment)
Analog (A)/
Digital (D)
Polymer Mixing - Run-hour
record
Reset of Hour-Run
meter
0
Software counter / Interlock
with screen operation with
delay off
Polymer Dilution Skid - Trip
Indicator
1
1
Alarm (Fault Report)
Polymer Dilution Skid - Run
Polymer Dilution Skid - Auto
Mode
Polymer Dilution Skid - Manual
Mode
Polymer Dilution Skid - To Start/
Stop
Indicator
1
1
Record number of Start / stop
Indicator
1
1
Program Control operation
Indicator
1
1
Remote Control
1
1
Software control / PLC
Polymer Dilution Skid - Runhour record
Reset of Hour-Run
meter
0
Software counter / Interlock
with screen operation with delay
off.
Fan : Manual
Indicator
1
1
Fan : Run
Indicator
1
1
Fan : Off
1
1
Fan : To Start / Stop
1
1
Fan : Run-Hour record
1
Indicator
Remote Start /
Stop
Reset of Hour-Run
meter
Status & counter no. of start /
stop
Alarm (Fault Report)
Software record of running
hours
Force Ventilation: Sludge Feed
& Dewatering Room
Fan : Auto
Notes:
AI = Analog Input Qty = Quantity
260
Indicator
1
1
AO = Analog Output DI = Digital Input Volume 4
DO = Digital Output
Malaysian Sewerage
Industry Guidelines
Appendix C - Supervisory Control and Data Acquisition System (SCADA)
Appendix C - Supervisory Control and Data Acquisition System (SCADA)
Attachment C - 3: Representation of SCADA Control Symbols
Attachment C - 3: Representation of SCADA Control Symbols
PUMPS & AERATION DEVICES
PUMPS & AERATION DEVICES
OFF MODE
EQUIPMENT
PUMPS
(Centrifugal)
PUMPS
(Progressive Cavity)
BLOWER
SURFACE AREATOR
Sewage Treatment Plants
234
ON MODE
Volume 4
Volume 4
261
Malaysian Sewerage
Treatment Plant
Appendix C - Supervisory Control and Data Acquisition System (SCADA)
Appendix C - Supervisory Control and Data Acquisition System (SCADA)
ACCESSORIES & FITTINGS
ACCESSORIES & FITTINGS
EQUIPMENT
OFF MODE
ON MODE
Valves
(General)
BUTTERFLY VALVE
AGITATOR
CONVEYORS
CONVEYORS SCREW
262
Volume 4
Sewage Treatment Plants
Third Edition
Volume 4
Malaysian Sewerage
Industry Guidelines
Page 235
Appendix C - Supervisory Control and Data Acquisition System (SCADA)
Appendix C - Supervisory Control and Data Acquisition System (SCADA)
OTHERS
OTHERS
SYMBOLS
EQUIPMENT
PLC CONTROLLER
WIRELESS COMMUNICATION
SCADA WORKSTATION
POWER TRANSMISSION
METER
COMPRESSOR
TANK
Sewage Treatment Plants
236
Volume 4
Volume 4
263
Malaysian Sewerage
Treatment Plant