Signal SDS Series - Operational and Environmental Requirements

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SDS Series

WIRING CONNECTIONS TO CONTROLLER:

• Install the controller’s VDC power supply in close proximity to the controller.

• The controller is supplied with quick disconnect terminal strips. It may be conven-

ient to unplug the terminal strips to terminate the wiring, they can then be

plugged back into their headers on the PCB motherboard.

• Connect the 36VDC RED / BLACK power leads to the R and B terminals at the con-

troller.

• Sensor cables should be not greater than .2mm² (AWG24) when directly wiring

into the controller terminal strip. The Two-wire terminals [O/P] are connected to

the SD-SP filter/protection device. See next section Lightning Protection

• Connect the PumpNode™ RED wires to the two-wire cable, BROWN wires to the

pump start relay. Ensure the pump start relay is a low current rated device at

maximum 24VAC 65mA (Omron LY 24VAC series)

• When installing a direct relay module SD-1-DR (RelayCube) it will require a sepa-

rate 24VAC power supply. Please ensure this is rated a minimum of 1 amp.

• The RelayCube™ can be mounted anywhere that is convenient along the two-wire

cable provided a 24VAC power source is available.

• Do not earth the 24 VAC at the RelayCube™. See page 15.

OPERATIONAL AND ENVIRONMENTAL REQUIREMENTS:

• Ambient operating Temperature 0 to 55 degrees centigrade maximum.

• Main supply voltage for controller power supply 100—240 VAC 50/60Hz

• Ensure adequate air ventilation to assist cooling if installed in cubicle.

• Power supply must be installed by a qualified electrical technician.

• Use only the power supply supplied with the controller or a recommended alterna-

tive by Signal Data Systems.

• Position the controller away from direct sunlight and water spray.

• Avoid close proximity to possible electromagnetic interference and particularly

close proximity to VSD devices unless they meet all the manufactures installation

requirements. Signal Data Systems recommend a distance of 5 meters from

possible sources of electromagnetic interference.

MOUNTING CONTROLLER:

• Locate at an easy viewable eye level with a minimum top clearance of 200mm

for lid to be fully opened.

• Allow sufficient space at the bottom of the controller for conduits and cable.

• Some installations may require a separate terminal strip mounted in close proximi-

ty to the controller if large gauge two-wire cable is used.

• Mount the controller using all four mounting points on a flat level surface.

Installation