To expand the control relay capacity of the controller, use the Relay Expansion Board (REB8). This provides eight additional 2 Amp Form C dry relay outputs, rated for 24VDC. These relays are socketed and removable.
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There is almost no distance limitation for the cable between the REB8’s terminal block and an isolation relay. If a powered device is being activated or energized, use the ScramblePad distance limitations (see Table 1-6 in section “ScramblePad/MATCH Inputs” as a good measure of distance capability. However, for accuracy, voltage drop calculations should be made for the specific load, cable, and distances involved, similar to lock calculations in section “Typical Door Relay Outputs”.
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SW1 | OFF | Normal operating position. |
|---|---|---|
ON | Forces all 8 relays OFF so no system function can actuate the controller until the master override is OFF. | |
SW2 | OFF | Normal operating position. |
ON | Forces all 8 relays ON so no system function will actuate the relays until the master override is OFF. |
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