Specifications

Level One: Protege GX Installer Study Guide | August 2013 151

Lock Cable Distance

Incorrect conductor sizing for lock power can lead to:

 Cable degradation

 Lock malfunction

 Decreased bond strength

 PSU overload

PSU Expander

250m/820ft

30m/100ft

130m/425ft

15m/50ft

65m/210ft

10m/30ft

2mm/14AWG

0.5mm/23AWG

0.6mm/.23AWG

0.5mm/23AWG

2mm/14AWG

Strike/dropbolt

Mortice/single mag

Double mag

Output Wiring

If a Controller or expander loses power for any reason, all relays will return to their un-powered state. When

designing a system it is a good idea to consider what would happen in failed condition to any devices you may

be controlling with these relays.

Output terminals are labeled in their un-powered state. Where a terminal is labeled NC or Normally Closed this

set of contacts will be closed when the output is off.

If your system was specified to control some lighting, it would be a good idea to use the NC or Normally Closed

terminals to do this. If for some unexpected reason, the module fails and the output turns off, then the lights

being controlled would be turned on. Ultimately, in a failed state it would be better for the lights to be stuck on

than stuck off.

This can however lead to programming confusion, but as long as smart naming conventions are used, this can

be avoided.

For instance, the above example could be labeled Lighting Control (ON to de-energize).