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2017 Page 32 5IN2413 B
Wiring other Devices at the Terminal Block
Connecting a Wired Keypad
A wired keypad should be installed first, as it is used to set defaults upon system
initialization (language, time and date), to perform an Auto-Setting scan for
allocating all bus-connected devices, and configure parameters. Wired keypads can
be connected directly at the main panel terminal block, or onto a RISCO bus line.
See Step 3: Bus Line Installations, page 36.
Connecting Auxiliary (12 V DC) Devices
Use the Auxiliary Power AUX (+) and COM (—) terminals to power, for example,
PIRs, glass-break detectors (4-wire types), smoke detectors, audio switches,
photoelectric systems, or any device that requires a 12 V DC power supply.
NOTES:
• Maximum current draw for each bus (“AUX RED” terminals) is 750 mA.
• Maximum combined current draw from the two AUX terminals plus UO1 and
UO2 is 750 mA.
• Total current draw from the panel terminal blocks should not exceed 2000mA,
in addition to above limitations.
• If, at the main panel terminal block, any Bus or AUX outputs are overloaded
and are shut down, you must disconnect all loads from those Bus or AUX
outputs for a period of at least 10 seconds before you reconnect any load to
those outputs.
• To increase your power ability when employing multiple auxiliary devices,
you can use an optional Power Supply expansion module(s).
• For 4-wire smoke detectors, see the packaged installation instructions.
• To prevent a possible drop in voltage due to current requirements and
distances involved, make sure to use the appropriate wire gauge (refer to the
table of gauge sizes for AUX devices). See Appendix B: Wiring, page 219.
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