Product Description
Wye-Delta Open Transition Starting Electric
Fire Pump Controllers
Description—Firetrol® FTA1300 Wye-Delta, Open
Transition Starting Fire Pump Controllers are used
with delta-wound squirrel cage motors. FTA1300
controllers are of the open circuit transition type in
which the motor circuit is opened during the transition
from start to run. The controller monitors, displays
and records fire pump system information.
Actuating the controller by the pressure switch,
START pushbutton or deluge valve contact closes
the start contactor connecting the motor to the line
in the wye connection. The motor will draw approximately 33% of its normal inrush current and develop
approximately 33% of its normal starting torque. After
a time delay, the motor is automatically reconnected
in delta, applying full voltage to the motor windings.
These controllers are recommended especially for
use with generator sets.
Approvals—Firetrol fire pump controllers are listed
by Underwriters’ Laboratories, Inc., in accordance
with UL218, Standard for Fire Pump Controllers,
CSA, Standard for Industrial Control Equipment,
and approved by Factory Mutual. They are built to
meet or exceed the requirements of the approving
authorities as well as NEMA and the latest editions
of NFPA 20, Installation of Centrifugal Fire Pumps,
and NFPA 70, National Electrical Code.
Standard Features—The following are included as
standard with each controller:
„ Voltage surge protector
„ Main Disconnect Switch sized for connected motor horsepower and voltage
„ Fire pump Circuit Breaker
„ Motor contactor
„ Suitable for use as Service Equipment
• FTA1300
„ Emergency Manual Run Mechanism to mechanically close motor contactor contacts in an emergency condition
„ Built-in Start and Stop push-buttons to bypass
automatic start circuits
„ Door mounted display/interface panel featuring
a 40 Character Vacuum Fluorescent Display,
Membrane Type User Control Push-buttons and
easy to read LED Indicators
„ Single handle Isolating Disconnect Switch/Circuit
Breaker mechanism
„ POWER ON LED
„ PUMP RUN LED
„ PHASE FAILURE LED
„ PHASE REVERSAL LED
„ LOW PRESSURE LED
„ DELUGE OPEN LED
„ INTERLOCK ON LED
„ TRANSFER SWITCH NORMAL LED (If unit
ordered with Automatic Power Transfer Switch)
„ TRANSFER SWITCH EMERGENCY LED (If unit
ordered with Automatic Power Transfer Switch)
„ EMERGENCY ISOLATING SWITCH OFF LED
(If unit ordered with Automatic Power Transfer
Switch)
„ Minimum Run Timer / Off Delay Timer
„ Daylight Savings Time option
„ Weekly Test Timer
„ Motor Acceleration Timer
„ Elapsed Time Meter
„ Digital Pressure Display
„ USB Host Controller and Port
„ Solid State Pressure Transducer
„ Data Log
„ Event Log (3000 Events)
„ True RMS Metering with simultaneous 3 phase
display of amps and volts
„ Disk Error message
„ Disk Near Full message
„ Pressure Error message
„ Motor Over 320% message
„ Local Start message
„ Remote Start message
„ Emergency Start message
„ Fail To Start message
„ Undervoltage message
„ Overvoltage message
„ High Speed Open Serial Communications Port
„ NEMA Type 2 enclosure
Product Description
Power Transfer Switches for
Electric Fire Pump Controllers
Description—Firetrol® Power Transfer Switches are
available completely assembled with Firetrol Electric Fire Pump Controllers; full or reduced voltage
types. The power transfer switches are built in two
versions:
FTA900 — For use when the normal power source
is a utility and the emergency power source is a generator set.
FTA950 — For use when both the normal and emergency power sources are utilities.
The entire package of power transfer switch and
controller is completely factory assembled, wired,
tested and shipped as a complete unit for easy field
connection to the power sources and the fire pump
motor.
Approvals—Firetrol power transfer switches are
listed by Underwriters' Laboratories, Inc., in accordance with UL218, Standard for Fire Pump Controllers; UL1008, Automatic Transfer Switches; UL508,
Industrial Control Equipment, CSA, Standard for Industrial Control Equipment; and approved by Factory Mutual. They are built to meet or exceed the
requirements of the approving authorities as well as
NEMA and the latest editions of NFPA 20, Installation of Centrifugal Fire Pumps, and NFPA 70, National Electrical Code.
Standard Features—The following are included as
standard with each transfer switch:
n Emergency power source disconnect switch sized
for connected motor horsepower and voltage
n (FTA950 only) Fire pump circuit breaker
• FTA900
FTA950
n (FTA950 only) Mark II monitors for overcurrent tripping (non-thermal) of circuit breaker and alarm indicator for phase failure/phase reversal
n 3-pole, double throw transfer switch mechanism,
electrically operated, mechanically held
n Control module providing for the following:
Differential voltage sensing on all phases of the
normal power source
Voltage sensing of the emergency power source
Frequency sensing of the emergency power
source
Transfer time delay to compensate for momentary power outages of the normal source
Retransfer from emergency to normal source is
automatically delayed unless the emergency
source fails
Cool-down timer for unloaded running of the generator set after retransfer to the normal power
source
Instantaneous retransfer to normal if the emergency source fails and the normal source is available
3 second transfer restart delay to reduce current
surges when transferring to or from the emergency source
NO and NC engine control contacts to start the
generator set when the normal power source fails
n Transfer Switch Normal LED
n Transfer Switch Emergency LED
n Emergency Isolating Switch Open LED
n Test Selector Switch
n Transfer By-pass Switch
n Silence Alarm Pushbutton
n Emergency Isolating Switch Open and Transfer
Switch in Emergency Audible Alarms
n Output contacts (NO and NC) for Generator Start,
Emergency Isolating Switch Open and Transfer
Switch position indicators
n Standard Withstand Rating, emergency side only
FTA900 (Generator set equipped with molded
case circuit breaker)
100-150A, 22,000A RMS Sym., 200-480V;
10,000A RMS Sym., 550-600V
260-400A, 35,000A RMS Sym ., 200-480 V;
10,000A RMS Sym., 550-600 V
600-800A, 50,000A RMS Sym., 200-480V;
10,000A RMS Sym., 550-600V
(See Options for higher ratings)
FTA950—See Options
n NEMA Type 2 enclosure (IEC IP11)
Specifications
Electric Fire Pump Controllers
Main Fire Pump Controller
The main fire pump controller shall be a factory
assembled, wired and tested unit and shall conform
to all the requirements of the latest edition of NFPA
20, Standard for the Installation of Stationary Pumps
for Fire Protection and NFPA 70, National Electrical
Code.
The controller shall be listed by Underwriters
Laboratories, Inc., in accordance with UL218, Standard for Fire Pump Controllers, CSA, and Canadian
Standards Association CSA-C22.2, Standard for
Industrial Control Equipment (cULus), approved by
Factory Mutual and approved by the City of New York
for fire pump service.
Starting Method
The controller shall be of the combined manual
and automatic type designed for:
Full Voltage Starting
Wye (Star)-Delta Open Transition Starting
Wye (Star)-Delta Closed Transition Starting
Part Winding Starting
Primary Resistance Reduced Voltage Starting
Autotransformer Reduced Voltage Starting
of the fire pump motor having the horsepower, voltage, phase and frequency rating shown on the plans
and drawings. The controller components shall be
housed in a NEMA Type 2 (IEC IP11) drip-proof, wall
mounted enclosure.
Withstand Ratings (Short Circuit Current Ratings)
All controller components shall be front mounted,
wired and front accessible for maintenance. The minimum withstand rating of the controllers shall not be
less than 100,000 Amps RMS Symmetrical at 200-600
Volts*. If the available system fault current exceeds
these ratings, the controllers shall be supplied with a
withstand rating of 150,000 or 200,000 Amps RMS
Symmetrical, as required.
*Note: 100,000 Amp withstand rating not available in
some larger horsepowers. Consult factory for
details.
Isolation Switch and Circuit Breaker
The controller shall include a motor rated combination isolating disconnect switch/circuit breaker,
mechanically interlocked and operated with a single,
externally mounted handle. When moving the handle
from OFF to ON, the interlocking mechanism shall
sequence the isolating disconnect switch ON first, and
then the circuit breaker. When the handle is moved
from ON to OFF, the interlocking mechanism shall
sequence the circuit breaker OFF first, and then the
isolating disconnect switch.
The isolating disconnect switch/circuit breaker
shall be mechanically interlocked so that the enclosure door cannot be opened with the handle in the
ON position except by a hidden tool operated defeater
mechanism. The isolating disconnect switch/circuit
breaker shall be capable of being padlocked in the
OFF position for installation and maintenance safety,
and shall also be capable of being locked in the ON
•
FTA1000
-1800
position without affecting the tripping characteristics
of the circuit breaker. The controller door shall have
a locking type handle and three point cam and roller
vault type hardware. The circuit breaker trip curve
adjustment shall be factory set, tested and sealed
for the full load amps of the connected motor. The
circuit breaker shall be capable of being field tested to
verify actual pick up, locked rotor, and instantaneous
trip points after field installation without disturbing
incoming line and load conductors.
Operator Interface
The fire pump controller shall feature an operator
interface with user keypad. The interface shall monitor
and display motor operating conditions, including all
alarms, events, and pressure conditions. All alarms,
events, and pressure conditions shall be displayed
with a time and date stamp. The display shall be a
2-line, 20-character, vacuum fluorescent, dot matrix
type designed to allow easy viewing from all angles
and in all light conditions. The display and interface
shall be NEMA rated for Type 2, 3R, 4, 4X, and 12
protection and shall be fully accessible without opening the controller door. The display and user interface
shall utilize multiple levels of password protection for
system security. A minimum of 3 password levels
shall be provided. The display shall be capable of
being programmed for any language.
Ammeter/Voltmeter
The fire pump controller operator interface shall
be capable of displaying true RMS digital motor
voltage and current measurements for all three
phases simultaneously. Displays requiring pushbutton and selector switches to toggle between
phases or current and voltage shall not be accepted.
Voltage and current shall be measured by
True RMS technology to provide the most accurate
measurement for all sine waves, including nonsinusoidal waveforms. Average responding meters
will not be accepted.
Digital Status/Alarm Messages
The digital display shall indicate text messages
for the status and alarm conditions of:
• Motor On
• Sequential Start Time
• Minimum Run Time
• Local Start
/ Off Delay Time
• Remote Start
• Fail to Start
• System Battery Low
• Under Voltage
• Over Voltage
• Locked Rotor Trip
• Over Frequency
• Emergency Start
• Motor Over 320%
• Drive Not Installed
• Motor Overload
• Disk Error
• Printer Error
• Disk Near Full
• Pressure Error
The Sequential Start Timer and Minimum Run Timer/
Off Delay Timer shall be displayed as numeric values
reflecting the value of the remaining time.
LED Visual Indicators
LED indicators, visible with the door closed, shall
indicate:
• Power On
• Emerg. Isolating Switch Open
• Pump Running • Low System Pressure
• Alarm
• Transfer Switch Normal
• Deluge Open • Transfer Switch Emergency
• Phase Failure • Phase Reversal
• Interlock On
Data Logging
The digital display shall monitor the system and
log the following data:
• Motor Calls/Starts
• Elapsed Motor Run Time
• Last Trip Currents
• Elapsed Power On Time
• Last Breaker Trip
• Maximum Run Currents
• Minimum Voltages • Minimum Run Currents
• Maximum Voltages • Last Motor Run Time
• Last Phase Failure • Last Start Currents
• Last Phase Reversal • Min/Max Frequency
• Min/Max Pressure
Event Recording
Memory - The controller shall record all operational and alarm events to system memory. All events
shall be time and date stamped and include an index
number. The system memory shall have the capability
of storing 3000 events and allow the user access to
the event log via the user interface. The user shall
have the ability to scroll through the stored messages
in groups of 1, 10, or 100.
USB Host Controller - The controller shall have a
built-in USB Host Controller. A USB port capable of
accepting a USB Flash Memory Disk (aka: flash drive,
thumb drive, memory stick, etc..) shall be provided.
The controller shall save all operational and alarm
events to the flash memory on a daily basis. Each
saved event shall be time and date stamped. The total
amount of historical data saved shall solely depend
on the size of the flash disk utilized. The controller
shall have the capability to save settings and values
to the flash disk via the user interface.
Serial Communications - The controller shall
feature a RS485 serial communications port for use
with 2 or 4 wire Modbus RTU communications.
Solid State Pressure Transducer
The controller shall be supplied with a solid state
pressure transducer with a range of 0-300 psi (0-20.7
bar) ±1 psi. The solid state pressure switch shall be
used for both display of the system pressure and control of the fire pump controller. Systems using analog
pressure devices or mercury switches for operational
control will not be accepted.
The START, STOP and SYSTEM PRESSURE
shall be digitally displayed and adjustable through
the user interface. The pressure transducer shall be
mounted inside the controller to prevent accidental
damage. The pressure transducer shall be directly
pipe mounted to a bulkhead pipe coupling without
any other supporting members. Field connections
shall be made externally at the controller coupling to
prevent distortion of the pressure switch element and
mechanism.
Operation
A digitally set On Delay (Sequential Start) timer
shall be provided as standard. Upon a call to start,
the user interface shall display a message indicating
the remaining time value of the On Delay timer.
The controller shall be field programmable for
manual stop automatic stop. If set for automatic
stopping, the controller shall allow the user to select
either a Minimum Run Timer or an Off Delay Timer.
Both timers shall be programmable through the user
interface.
A nonadjustable restart delay timer shall be
provided to allow the residual voltage of the motor to
decay prior to restarting the motor. At least 2 seconds,
but no more than 3 seconds, shall elapse between
stopping and restarting the pump motor.
A weekly test timer shall be provided as standard.
The controller shall have the ability to program the
time, date, and frequency of the weekly test. In addition, the controller shall have the capability to display
a preventative maintenance message for a service
inspection. The message text and frequency of occurrence shall be programmable through the user
interface.
A Lamp Test feature shall be included. The user
interface shall also have the ability to display the
status of the system inputs and outputs.
The controller shall not start the fire pump motor
under a single-phase condition. If the motor is already
running when a phase loss occurs, the controller shall
continue to run the motor, but still display a Phase
Failure alarm.
The fire pump controller software shall be automatically upgradable through the USB port by simply
inserting a flash disk with the new software. Fire pump
controllers that require laptop computers, handheld
equipment or specialized devices for software upgrades shall be prohibited.
The controller shall be a Firetrol brand.
(919) 460-5200 • www.firetrol.com • Sales Office: Cary, NC 27518 USA
SP1000-20 (03-10-09)
©ASCO 2006
Specifications
Fire Pump Controller Power Transfer Switches
Main Fire Pump Controller with Transfer Switch
The main fire pump controller shall be factory assembled and wired with a power transfer switch listed
by Underwriters’ Laboratories, Inc. for transfer switch
and fire pump service. The power transfer switch shall
be approved by Factory Mutual.
The power transfer switch and fire pump controller
shall be factory assembled, wired and tested as a single
unit and shall conform to all requirements of the latest
edition of NFPA 20, Centrifugal Fire Pumps and NFPA
70, National Electrical Code.
Power Transfer Switch for Generator Set Emergency
Power Source
The power transfer switch shall be housed within
the fire pump controller enclosure or in a NEMA Type 2
(IEC IP11) drip-proof enclosure attached directly to the
fire pump controller. Where the power transfer switch is
provided in an attached enclosure, the enclosures shall
be fitted so that the assembly constitutes a single unit.
The fire pump controller/power transfer switch shall be
factory assembled, wired and tested as a unit prior to
shipment.
The power transfer switch shall include a motor
rated disconnect/isolating switch capable of interrupting
the motor locked rotor current. The disconnect/isolating switch shall be mechanically interlocked so that the
enclosure door cannot be opened with the handle in the
ON position except by a hidden tool operated defeater
mechanism. The disconnect/isolating switch shall be
capable of being padlocked in the OFF position with
up to three padlocks for installation and maintenance
safety, and shall also be capable of being locked in the
ON position. The enclosure door shall have a locking
type handle and three point cam and roller type vault
hardware.
A auxiliary contract shall be provided on the transfer
switch to prevent starting of the emergency generator
set when the transfer switch or the main fire pump
controller are being serviced.
The automatic transfer switch shall consist of an inherently double throw power transfer switch mechanism
and a microprocessor control panel to provide automatic
operation. The transfer switch and control panel shall
be of the same manufacturer. The automatic transfer
switch shall be an ASCO 7000 series with a group 5
control panel.
The transfer switch shall be electrically operated
and mechanically held. The electrical operator shall be
a momentarily energized, single solenoid mechanism.
The switch shall be mechanically interlocked to ensure
only two possible positions, normal or emergency.
Switches having a neutral position shall not be permitted.
•
FTA900
950
The switch shall be positively locked and unaffected by momentary outages, so that contact pressure is
maintained at a constant value and contact temperature
rise is minimized for maximum reliability and operating
life. All main contacts shall be silver composition and
inspection of all contacts shall be possible from the front
of the switch without disassembly of operating linkages
and without disconnection of power.
Designs utilizing components of molded case
circuit breakers, contactors, or parts thereof, which are
not intended for continuous duty, repetitive switching
or transfer between two active power sources are not
acceptable.
The transfer switch control panel shall have a 4
line, 20 character LCD display and keypad for viewing
all available data and setting desired operational parameters. Voltage and frequency on both the normal and
emergency sources shall be continuously monitored.
The normal source pick up shall be set at 95% of nominal voltage and the emergency source pick up set at
90% of nominal voltage and 95% nominal frequency.
Source status screens shall be provided for both normal & emergency to provide digital readout of voltage,
frequency and phase rotation on all 3 phases.
The transfer switch shall have visible pilot light
indication for the following conditions:
TRANSFER SWITCH IN NORMAL, TRANSFER
SWITCH IN EMERGENCY, NORMAL SOURCE ACCEPTED, EMERGENCY SOURCE ACCEPTED and
EMERGENCY ISOLATION SWITCH OPEN. Remote
alarm contacts shall be supplied as standard for the
following conditions: EMERGENCY SOURCE ISOLATION SWITCH OPEN, NORMAL POWER AVAILABLE,
EMERGENCY POWER AVAILABLE and TRANSFER
SWITCH POSITION. An audible alarm shall sound
if: EMERGENCY ISOLATION SWITCH OPEN and
TRANSFER SWITCH IN EMERGENCY. A SILENCE
ALARM push-button shall be supplied . A selector
switch shall be supplied to manually test the transfer to
emergency and the retransfer to normal power.
The power transfer switch shall be a Firetrol FTA900
for normal utility power and engine generator set emergency power.
Power Transfer Switch for Second Utility Emergency
Power Source
The power transfer switch shall be housed within
the fire pump controller enclosure or in a NEMA Type 2
(IEC IP11) drip-proof enclosure attached directly to the
fire pump controller. Where the power transfer switch is
provided in an attached enclosure, the enclosures shall
be fitted so that the assembly constitutes a single unit.
The fire pump controller/power transfer switch shall be
factory assembled, wired and tested as a unit prior to
shipment.
The power transfer switch shall include a motor
rated combination isolating disconnect switch/circuit
breaker, mechanically interlocked and operated with a
single, externally mounted handle. When moving the
handle from OFF to ON, the interlocking mechanism
shall sequence the isolating disconnect switch closed
first, and then the circuit breaker. When the handle is
moved from ON to OFF, the interlocking mechanism
shall sequence the circuit breaker open first, and then
the isolating disconnect switch.
The isolating disconnect switch/circuit breaker shall
be mechanically interlocked so that the enclosure door
cannot be opened with the handle in the ON position
except by a hidden tool operated defeater mechanism.
The isolating disconnect switch/circuit breaker shall
be capable of being padlocked in the OFF position for
installation and maintenance safety, and shall also be
capable of being locked in the ON position without affecting the tripping characteristics of the circuit breaker.
The enclosure door shall have a locking type handle
and three point cam and roller type vault hardware.
The circuit breaker trip curve adjustment shall be
factory set, tested and sealed for the connected full load
amps of the motor.
The fire pump controller/power transfer switch shall
have data logging capability for historical operation
recording and to aid in annual test, service and trouble
shooting. The data logging shall be accessible by front
mounted interface panel and also by saving the information via the standard USB port. The data file shall be in
text (.txt) format and easily readable by most common
text editing or word processing software. The circuit
breaker shall be capable of being field tested to verify
actual pick up, locked rotor, and instantaneous trip
points after field installation without disturbing incoming
line and load conductors.
The automatic transfer switch shall consist of an inherently double throw power transfer switch mechanism
and a microprocessor control panel to provide automatic
operation. The transfer switch and control panel shall
be of the same manufacturer. The automatic transfer
switch shall be an ASCO 7000 series with a group 5
control panel.
The transfer switch shall be electrically operated
and mechanically held. The electrical operator shall be
a momentarily energized, single solenoid mechanism.
The switch shall be mechanically interlocked to ensure
only two possible positions, normal or emergency.
Switches having a neutral position shall not be permitted.
The switch shall be positively locked and unaffected by momentary outages, so that contact pressure is
maintained at a constant value and contact temperature
rise is minimized for maximum reliability and operating
life. All main contacts shall be silver composition and
inspection of all contacts shall be possible from the front
of the switch without disassembly of operating linkages
and without disconnection of power.
Designs utilizing components of molded case
circuit breakers, contactors, or parts thereof, which are
not intended for continuous duty, repetitive switching
or transfer between two active power sources are not
acceptable.
The transfer switch control panel shall have a 4
line, 20 character LCD display and keypad for viewing
all available data and setting desired operational parameters. Voltage and frequency on both the normal and
emergency sources shall be continuously monitored.
The normal source pick up shall be set at 95% of nominal voltage and the emergency source pick up set at
90% of nominal voltage and 95% nominal frequency.
Source status screens shall be provided for both normal & emergency to provide digital readout of voltage,
frequency and phase rotation on all 3 phases.
The transfer switch shall have visible pilot light
indication for the following conditions:
TRANSFER SWITCH IN NORMAL, TRANSFER
SWITCH IN EMERGENCY, NORMAL SOURCE ACCEPTED, EMERGENCY SOURCE ACCEPTED and
EMERGENCY ISOLATION SWITCH OPEN. Remote
alarm contacts shall be supplied as standard for the
following conditions: EMERGENCY SOURCE ISOLATION SWITCH OPEN, NORMAL POWER AVAILABLE,
EMERGENCY POWER AVAILABLE and TRANSFER
SWITCH POSITION. An audible alarm shall sound
if: EMERGENCY ISOLATION SWITCH OPEN and
TRANSFER SWITCH IN EMERGENCY. A SILENCE
ALARM push-button shall be supplied . A selector
switch shall be supplied to manually test the transfer to
emergency and the retransfer to normal power.
The transfer switch shall be a Firetrol FTA950
for normal utility power and second utility emergency
power.
Note: FTA900 and FTA950 power transfer switches
are designed for use with Firetrol Electric Fire Pump
Controllers, models FTA1000, FTA1250, FTA1300,
FTA1350, FTA1500, FTA1800 and FTA1930.
(919) 460-5200 • www.firetrol.com • Sales Office: Cary, NC 27518 USA
SP900-20 (03-10-09)
©ASCO 2006
Sequence of Operation
Wye-Delta Open Transition
Fire Pump Controllers
Introduction
Reference to Wiring Schematic, Publication
WS1300-50.
Note: Firetrol schematics are drawn showing the
equipment in a de-energized state
Energizing The Controller
1. Close the Isolating switch/Circuit breaker by moving
the handle to the “ON” position.
Note: The unmarked, red, “Interlock” jumper wire, located
between terminals #1 & #10 on the Relay PC board,
(TB1), will prevent the MarkII unit from starting the electric
motor automatically. This jumper wire should only be
removed after the pressure settings have been input,
and the system pressurized at, or above the Stop set
point.
2. The factory programmed MarkII unit will begin
initialization. Upon completion, the display will confirm
the system pressure, the time, date, and “Interlock ON”,
which is an alarm condition and will cause the yellow
alarm LED to flash. Any other existing alarm conditions
(low system pressure, phase reversal, phase failure,
deluge open), will also be sequentially and continuously
displayed at this time, until each is rectified.
3. With the “interlock” jumper still in place, the electric
motor can only be started by depressing the START
push-button, located on the flange of the controller
enclosure, or by engaging the Emergency Run
Mechanism. After all alarm conditions have been
rectified, and the system pressurized at or above the
Stop pressure setting, then the “interlock” jumper may
be removed for the controller’s automatic operation
(“standby”). With the “interlock” jumper removed, a drop
in system pressure to the MarkII’s set start point, will
start the electric motor.
4. The deluge valve contacts are only operational if the
factory jumper has been removed and a normally closed
deluge valve contact has been placed between terminals
1 and 8 of the Relay PC board, (TB1). The Remote Start
is only operational if a normally open, momentarily closed
contact is wired to terminals 6 and 7 of the Relay PC
board, (TB1). If engaged, the Emergency Run Mechanism
will cause the pump motor to run as described in the
Emergency Starting and Stopping section.
Automatic Start and Stop
1). The controller pressure transducer initiates the
automatic start circuits for the pump motor. When
pressure falls at or below the MarkII Start setting, relay
1CR is energized. 1CR normally open contact, closes
•
FTA1300
to the coils of 1M & 1S starters, allowing voltage to the
line in the WYE connection. (See section Pump Motor
Starting Sequence for more information). At the same
time the MarkII initiates the internal transition time, factory
set for 2 seconds. Once this expires, 6CR is energized.
6CR normally open contact closes to the coil of 2M
starter, 1S coil is de-energized and mechanically locked
out (open transition), allowing the motor to be
reconnected in DELTA, applying full voltage to the
windings.
Note: Allow the motor to either run for 5 minutes, or
allow 5 minutes between starts, for initial start component
cool down period.
The minimum run time is a part of the MarkII Menu,
“Timer Settings”. The minimum run time factory setting
is 10 minutes. In this mode, minimum run time begins
when the pressure falls at or below the “Start” set point,
calling for the pump motor to run. When pressure drops,
this signals the MarkII to output via the Relay PC board,
directly to the 1CR relay coil. The relays normally open
contact closes, allowing line voltage to the coils of 1M &
1S contactors. The contactors’s 3 normally open
contacts close, allowing voltage to the line in the WYE
connection of the motor. After a 2 second delay, 6CR
relay coil is energized. 6CR normally open contact
closes, allowing line voltage to the coil of 2M contactor,
and de-energizing 1S contactor (open transition). The
2M contactor’s 3 normally open contacts close, allowing
reconnection in DELTA of the motor and the motor now
runs at full speed. Simultaneously, the minimum run
function of the MarkII is activated, maintaining voltage
on the 1CR and 6CR relay coils, keeping the motor
running until the 10 minutes expire. At this time, with
pressure restored at or above the Stop set point, 1CR
and 6CR coils will de-energize, re-opening the normally
open contacts, de-energizing the 1M and 2M coils,
causing the motor to stop.
If pressure is restored at or above the Stop set point
of the MarkII, and even if the minimum run time has not
yet expired, the manual STOP push button, located on
the flange of the controller can be depressed to manually
stop the engine. This also resets the minimum run time
function of the MarkII.
Manual Start and Stop
The pump motor may be manually started by using
either the START push-button mounted on the flange of
the enclosure or by using a normally open, momentarily
closed, remote start push-button connected to terminals
6 and 7.
When the START push-button is depressed, or a
remote start signal is seen through terminals 6 & 7, the
MarkII will output through the relay pc board to 1CR relay
coil and the sequence of events described in section
“Automatic Start & Stop” will begin. The MarkII minimum
run time feature will not be activated.
The pump motor will continue to run until the STOP
push-button is depressed. When the STOP push-button
is depressed, 1CR & 6CR relay coils are de-energized,
interrupting the voltage to 1M & 2M coils, which causes
the motor to stop.
Deluge Valve Operation
To operate the controller utilizing a deluge valve, the
wire jumper between terminals 1 and 8 must be removed
and a normally closed, open to run deluge valve contact
wired in its place.
When the deluge valve contact opens, relay 1CR
coil is energized, and the sequence of events described
in section “Automatic Start & Stop” will begin. The MarkII
minimum run time feature is also activated.
When the deluge valve contact closes, and minimum
run time expires, relays 1CR & 6CR are de-energized,
interrupting the voltage to 1M & 2M coils, which causes
the motor to stop.
Shutdown Interlock Operation
The shutdown interlock, if used, is a normally open,
closed to interlock contact wired to terminals 1 and 10.
When the interlock contact is closed, relay 1CR
cannot be energized by inputs to the MarkII from the
pressure transducer, or the deluge valve. The controller
may be started manually by depressing the START push
button. See the specific starting operation for more
details.
The controller is equipped with an emergency run
mechanism for use in the event of a coil burnout or other
electrical problem which would prevent normal starting
of the pump motor. The mechanism attempts to both
electrically and mechanically start the pump motor.
When the emergency run mechanism is utilized,
the 1M & 2M coils are energized, closing the contacts
leading to the motor windings. This, in effect, attempts
to electrically start the pump motor in DELTA.
The emergency run mechanism also manually
closes the 1M and 2M contactors, starting the motor in
DELTA. This will run the motor as long as the main
three phase power is available.
If the pump motor is running via the emergency run
mechanism, DO NOT release the mechanism to stop
the motor. Place the isolating switch/circuit breaker
handle in the off position, then release the emergency
run mechanism. Releasing the mechanism while the
motor is running could result in damage to the motor or
the motor contactors.
Note: The emergency run mechanism is not intended
for, nor should it be used as a testing device. Its sole
purpose is to attempt to start the pump motor in the
event of a failure.
Pump Motor Starting Sequence
Whenever relay 1CR, and sequentially, after transition
time expires, 6CR coils are energized, line voltage is
allowed to the coils of the motor starting contactors, 1M
& 2M. During Part Winding starting the following
sequence occurs.
1). 1CR contact closes, energizing contactors 1M & 1S.
1M & 1S connects motor to the line in the WYE
connection. The motor draws approximately 33% of its
normal inrush current and develops approximately 33%
of its normal starting torque.
2). When the MarkII transition time expires (factory set
at 2 seconds), 6CR relay is energized, allowing contactor
2M to energize, de-energizing and mechanically locking
out 1S (open transition). The motor is automatically
reconnected in DELTA, applying full voltage to the motor.
Emergency Starting and Stopping
XXXGJSFUSPMDPN…4BMFT0GGJDF$BSZ/$64"
SQ1300-20 (04-17-07)
‹$6&2
Sequence of Operation
Automatic Power Transfer Switch
Generator Set Emergency Source
Introduction
Reference to Wiring Schematic, Publication WS900-55.
Note: Firetrol schematics are drawn showing the equipment
in a de-energized state.
Energizing the Controller
1. Close the isolating switch/circuit breaker handle on the
main controller. Depending on the position of the transfer
switch, the TRANSFER SWITCH IN NORMAL or the
TRANSFER SWITCH IN EMERGENCY LED , located on the
MarkII interface will illuminate. If the transfer switch is in
the emergency position, and the normal source power is
satisfactory, the transfer switch contactor will transfer to the
normal source shortly after energizing the main controller.
Since the transfer switch isolating switch is open,
EMERGENCY ISOLATING SWITCH OFF led will be
illuminated, and the ALARM led will be flashing. The audible
alarm will sound indicating the isolating switch is open.
Press the ALARM SILENCE keypad to acknowledge the
alarm.
2. Close the isolating switch handle on the transfer switch
controller, and the EMERGENCY ISOLATING SWITCH OFF
led will extinguish.
3. With the controller energized, the normal conditions are
TRANSFER SWITCH NORMAL led illuminated, and
POWER AVAILABLE led illuminated. None of the control
relays will be energized.
4. Under the cover of the transfer switch control panel (CP),
relays NR and SE will energize.
CAUTION: With the transfer switch isolating switch/circuit
breaker in the off position, voltage is still present in the
transfer switch compartment. Both the transfer switch
and main controller must be turned off to completely deenergize this equipment.
Transfer Switch Sequence - Normal to Emergency
When one or more phases of the normal power source
fail, or the normal source voltage drops below 85% of
nominal (this range is adjustable from 70 - 85%), control
panel relay SE de-energizes and control panel relay NR
begins a timing cycle. The timing cycle is either 1 or 3
seconds, factory setting is 3 seconds. The time delay is to
override momentary power outages or voltage dips. If power
is restored to normal before the end of the timing cycle, the
cycle is reset to zero and relay SE energizes.
If normal power is not restored before the time delay
expires, relay NR de-energizes. This signals the generator
to start through a normally open contact to terminals 70
and 71 (normally open, closed to start generator) and a
normally closed contact to terminals 62 and 63 (normally
closed, open to start generator).
The control panel starts to monitor the voltage and the
frequency of the emergency source. When both reach
acceptable pickup points (90% nominal voltage, 95%
frequency), the control panel will accept the emergency
source.
When the emergency source is accepted, the control
panel relay ER begins a timing cycle to delay transfer to the
•
FTA900
emergency source. The cycle is adjustable from 0 - 5
minutes, factory setting is 0. Relay ER energizes, normally
open contacts on the relay close completing a circuit that
supplies voltage from the emergency source to the transfer
switch contactor coil TS. The coil is energized and the
transfer switch contactor operates. All of the transfer switch
contacts (main, control, and auxiliary) reverse position.
Control contacts on the transfer switch contactor open,
disconnecting the transfer switch contactor coil TS from
the emergency source. The coil is now de-energized, inertia
completes the physical movement of the transfer switch
contactor to the full emergency position. The load is now
connected to the emergency source.
Transfer Switch Sequence - Emergency to Normal
The sequence to retransfer the load to the normal source
begins when the control panel senses the normal source
voltage is restored (exceeds a selectable setting of 90% or
95%, factory setting is 90%).
When the normal source is accepted, the control panel
relay SE begins a timing cycle to delay the retransfer to
normal. The cycle is adjustable between 1 second and 30
minutes, factory setting is 30 minutes. This delay is to
assure the normal source has stabilized prior to
reconnecting. If the normal source voltage drops below
the dropout point before the time cycle ends, the cycle is
reset to zero.
At the end of the timing cycle, control panel relay SE
energizes, normally open contacts on the relay close,
completing a circuit that supplies voltage from the normal
source to the transfer switch contactor coil TS. The transfer
switch contactor operates, changing to the normal position.
Control contacts on the transfer switch contactor open,
disconnecting the transfer switch coil TS from the normal
source. The coil is de-energized and inertia completes the
physical movement of the transfer switch to the full normal
position. The load is reconnected to the normal source. If
the emergency source should fail and the normal source
has been satisfactorily restored, the load is immediately
reconnected to the normal source, bypassing the 30 minute
time cycle.
Once the retransfer sequence is completed, control panel
relay NR begins a 5 minute timing cycle. This allows the
engine and generator to run in an unloaded, cool down
state. When the time cycle is complete, relay NR deenergizes, signaling the generator to stop.
Load Disconnect Feature
The load disconnect feature is used to isolate the pump
motor during the transfer process. When the motor is
disconnected during a pump running condition, the motor
is “free spinning” making it, in effect, a generator. To avoid
connecting it to a power source in this state, the circuit to
the motor contactor coil(s) in the fire pump controller is
interrupted for 3 seconds before the transfer switch
operates. The motor will slow to an acceptable speed, or
stop completely prior to reconnecting to the power source.
Load Disconnect - Sequence of Operation
When the control panel accepts the source of power to
be transferred to, control panel relay OP will energize. A
normally open contact of relay OP closes and the MarkII will
de-energize relay 1CR in the fire pump controller, (if voltage
for the control circuit is available). With relay 1CR deenergized, the circuit to the motor contactor coil(s) is
interrupted and the motor will slow. After a 3 second delay,
the control panel will initiate a transfer sequence. When
the transfer sequence is completed, relay OP de-energizes
signaling the MarkII to re-energize relay 1CR , if necessary,
to start the pump motor. If the fire pump starting causes
have been satisfied prior to the transfer sequence, the
momentary interruption of power will reset the controller to
a standby state and the motor will not restart.
Limit Switches
Firetrol brand fire pump controllers utilize auxiliary limit
switch contacts in the disconnecting means of the fire pump
controller and the transfer switch controller. The limit
switches inhibit the transfer switch operation when the
disconnects are opened to perform maintenance to either
controller. Additionally, a limit switch is used to indicate the
position of the emergency source isolating switch.
Auxiliary limit switch AUX1 closes when the emergency
source isolating switch is opened. It will signal the MarkII
to illuminate the EMERGENCY ISOLATING SWITCH OFF
LED, the ALARM LED, and energizes the audible alarm
circuit. A set of alarm contacts from 21CR relay are provided
for remote monitoring of the isolating switch position.
Terminals 66 and 67 provide a normally closed, open to
alarm contact, terminals 68 and 69 provide a normally open,
close to alarm contact.
Auxiliary limit switch AUX2 inhibits the generator from
starting if the emergency isolating switch is opened. The
AUX2 contact on generator control terminals 62 and 63
closes when the isolating switch is opened. This inhibits
the circuit from opening to start the generator. The AUX2
contact, to generator control terminal 70, opens when the
isolating switch is opened. This inhibits the circuit from
closing to start the generator.
Auxiliary limit switch AUX3 is located in the disconnecting
means of the fire pump controller. The switch contact opens
when the disconnecting means is placed in the off position
or trips open due to a motor overload. When the switch
contact is opened, the load is inhibited from transferring to
the emergency source.
Standard Alarms and Indicators
The MarkII provides 3 standard LEDs for transfer switch
equipped controllers. An audible alarm is located on the
flange of the controller, and an Alarm Silence keypad. The
green LED for TRANSFER SWITCH NORMAL will illuminate
when the transfer switch is in the normal position, and the
power source is from the main controller utility service.
The TRANSFER SWITCH EMERGENCY LED illuminates,
when the transfer switch is in the emergency position, and
the power source is from the emergency generator. At the
same time, the MarkII energizes the audible alarm circuit.
An explanation of the EMERGENCY ISOLATING SWITCH
OFF LED is covered in the Limit Switch section.
When relay 21CR is energized, indicating the Emergency
Isolating Switch is open, or if the transfer switch is in the
emergency position, the audible alarm sounds. The alarm
will sound until either the ALARM SILENCE keypad is
pressed, the Emergency Isolating switch is closed, or the
transfer switch reconnects to normal utility power.
Test Switch
A spring return, two position selector switch is provided
for test of the transfer switch. The switch is located on the
flange of the transfer switch compartment. The test
simulates a power failure and will transfer the load to the
emergency source. Rotate the NORMAL-TEST switch to
the right (Test) position. It will be necessary to hold the
switch in this position until the generator starts and
provides acceptable power for the transfer switch contactor
to operate to the emergency position. This should take no
longer than 15 seconds. Failure to transfer indicates a
serious condition requiring immediate investigation.
Retransfer to Normal Timed/Immediate
Located beneath the NORMAL-TEST switch on the flange
of the transfer switch compartment is a second spring
return, two position selector switch. The switch is used to
override the retransfer to normal time delay cycle. The
switch is normally in the Timed position. To initiate an
immediate retransfer to the normal power source, rotate
the TIMED-IMMEDIATE selector switch to the IMMEDIATE
position. If the normal power source is acceptable, the
transfer switch contactor will transfer back to the normal
source.
Phase Reversal
The MarkII monitors the condition of the normal source
power at the line side of the contactor. If the MarkII detects
a phase reversal, a normally closed output contact opens
initiating a generator test start. Once the emergency source
power is acceptable, the transfer switch contactor will
change to the emergency source. After the retransfer to
normal time delay period (30 minutes) expires, and if the
normal source phase reversal is corrected, the transfer
switch contactor will retransfer to the normal source.
Remote Position Indication
To supervise the position of the transfer switch at a
remote location, a set of alarm contacts are provided.
Terminals 81 and 82 provide an open in normal, closed
in emergency contact. Terminals 83 and 84 provide a
closed in normal, open in emergency contact.
XXXGJSFUSPMDPN…4BMFT0GGJDF$BSZ/$64"
SQ900-20 (04-17-07)
‹$6&2