University of Manitoba
Req. #
LIGHTING CONTROL EQUIPMENT-
LOW VOLTAGE
1.1 RELATED WORK
.1 Basic Electrical Materials and Methods
.2
.3
.4
Conduit
Wire and Cable
Outlet Boxes and Fittings
1.2 DESCRIPTION OF SYSTEM
Section 16050
Section 16111
Section 16120
Section 16134
Section 16510
Page 1
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.6
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System shall be capable of switching up to 256 relays from single switch points by using a common bus data line consisting of a single twisted pair of 18 AWG conductors.
System shall be controlled by a single transmission unit for each group of 256 relays.
Relays shall be assembled in as many different relay cabinets as required; each cabinet shall be provided with an integral power supply.
Switch points shall consist of wall switches, photo controls, dry contact closures, or computer controlled switches, as indicated.
Switches shall be connected to a common data line without requiring individual hard-wired connections to relays.
Auxiliary input functions shall be interfaced to system by dry contacts.
Time clock shall be utilized in programmed lighting control.
Provide required interface to utilize 12 separate output signals from EMCS.
1.2 SUBMITTALS
.1 Submit shop drawings in accordance with Section 16050.
.2 Include wiring diagrams of all components. Each low voltage relay cabinet shall have its own unique shop drawing wiring diagram indicating controlled circuits and control.
1.4 OPERATION AND MAINTENANCE DATA
.1 Provide operation and maintenance data for incorporation into manual specified in Section
.2
16050.
Operation and Maintenance Manual shall include:
.1 Instructions for complete lighting control system to permit effective operation and
.3
.4
.2 maintenance.
Technical data - illustrated parts lists with parts catalogue numbers.
Copy of approved shop drawings with corrections completed and marks removed except review stamps.
List of recommended spare parts for system.
2.1 MATERIALS
.1 Lighting Control Equipment: by one manufacturer assembled from compatible components.
2.2 LOCAL WALL SWITCHES
.1 Single pushbutton operation, with internal solid-state circuitry to monitor the status of the
.2
.3 associated control relay.
Maximum of four switches in a single gang switch box.
Switch shall have red LED ‘on’ pilot light and green LED ‘off’ simultaneously. Each switch shall have an LED pilot light to indicate when each pattern is on.
2.3 LOCAL MASTER SWITCH
.1 System pattern switch capable of switching up to 256 relays in 24 patterns. Each switching pattern capable of being programmed to operate relays ‘on’ and ‘off’ simultaneously. Each switch shall have an LED pilot light to indicate when each pattern is on.
2.4 GROUP SWITCHES
.1 Group switch capable of switching up to 24 relays in relay panels anywhere in the system.
Switches shall have red LED ‘on’ pilot lights and green LED ‘off’ pilot light to indicate the status of the associated control relay.
Date revised November 30, 2012

University of Manitoba
Req. #
LIGHTING CONTROL EQUIPMENT-
LOW VOLTAGE
Section 16510
Page 2
2.5 LIGHTING CONTROL RELAYS
.1 Lighting control relays suitable for all types of lamp loads up to 20 A continuous at [347V].
.2
[120V].
Relay contacts able to sustain 1500 A fault currents for up to 20 msec.
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.4
.5
Relay mechanism mounted in a moulded case with both 24 V and [120V] [347V] terminals and an operating lever, marked ‘on-off’, to provide manual switching at the relay panel.
Relays provided with internal diodes and control contacts to automatically reverse the relay coil polarity after receiving an ‘on/off’ control pulse.
Relay operation shall protect relay coil from being continuously energized by holding the low voltage switch in either th e ‘on’ or ‘off’ position.
2.6 CONTROL RELAY PANELS
.1 Relay cabinets suitable for either flush or surface mounting, as indicated, with hinged door.
.2 Relays mounted on internal steel barrier strips separating the 24 V and [120V] [347V] sections.
.3
.4
Panels capable of holding 6, 12, 24, 36, 48 or 72 relays, as indicated.
Relay cabinets of sheet steel construction with steel barriers.
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Control transformers rated 24 [120V] [347V] and 40 VA.
Provide other control devices in relay panels as indicated and as required to provide the switching functions as indicated.
Cabinets shall be close coupled to breaker panel as indicated. Cabinets shall be 17" (425 mm) wide with height and depth to match panel board. Cabinets shall be complete with lockable door keyed alike with breaker panels.
Cabinet finish shall match that of adjacent power panel.
2.7 TRANSMISSION UNITS
.1 Provide a transmission unit for each group of up to 256 relays.
.2 Transmission units shall be capable of providing an interface between switches and relays using multiplex transmission. Signal pulses to transmission units shall be carried by the twisted pair data line bus from all switches to all relays in the system.
2.8 SYSTEM AMPLIFIER
.1 Provide signal amplifiers where maximum length of common data line bus exceeds manufacturer’s recommendations for transmission unit’s inputs.
2.9 RELAY DRIVER UNIT
.1 Connect low voltage relays to the data signal control system by relay driver units. Provide enough relay driver units to switch all relays in the system so that each relay is individually controlled.
2.10 PROGRAMMING UNITS
.1
.2
Provide standard programming unit for complete programming capability of total number of pattern and group switches.
Provide central control and programming unit capable of the following functions:
.1 Provide individual control and status indication of each relay control point in the
.2
.3 system.
Provide on-line programming for all programmable switches.
Provide output for connection to standard printer for printout of all programs in system.
2.11 AUXILIARY CONTACT IMPUT UNIT
.1 Provide an auxiliary contact input unit to operate up to 256 relays for inputs from energy management system, photo controls, time clocks or other control devices. Use pattern control input units to interface auxiliary control devices to the system. Each unit shall be
Date revised November 30, 2012

University of Manitoba
Req. #
LIGHTING CONTROL EQUIPMENT-
LOW VOLTAGE
Section 16510
Page 3 capable of accepting a dry momentary or maintained contact up to a total of 24 contacts, and shall be capable of operating in parallel with pattern, switches to provide override functions.
.2 Where auxiliary inputs are required for local area control use group control, input units. Each input capable of accepting a maintained contact, closed for ‘on’ and open for ‘off’.
2.12 ENCLOSURES
.1 Provide steel cabinets with lockable hinged door for transmission units, photocell controllers, input units, programming units and other control devices as indicated and as required.
2.13 MANUFACTURERS
.1 Acceptable manufacturers: Douglas and PDM.
3.1 INSTALLATION
.1 Locate and install equipment in accordance with manufacturer’s recommendations and as indicated.
3.2 TESTS
.1 Perform tests in accordance with Section l6050.
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Data Line Bus: use 18 AWG twisted pair in metal conduit.
Connect all switches and relay panels to the common data bus line.
Actuate control units in presence of Consultant to demonstrate lighting circuits are controlled as designated.
Date revised November 30, 2012