Access control applications
3.36 EST3 Installation and Service Manual
lock, but use of a CRCXF or remote 24 Vdc supply is
recommended to minimize the load on the panel power supply.
During open schedules, or when an authorized card is read at a
card reader, the CRC provides power from the 3-PPS/M to the
door strike to unlock the door. For maglocks, the CRC provides
power from the 3-PPS/M (or CRCXF or 24 Vdc power supply)
to activate the lock during closed schedules, or between
authorized card accesses.
Power supply
Use power and load calculations to determine the need for
remote power supplies or transformers. Refer to the CRC
Technical Reference Manual for calculation guidelines.
Jumper settings determine the power source and usage for the
CRC. Refer to the installation sheet for correct jumper settings.
Configure the input power as DC when using power from the
control panel or a remote supply. Configure input power as AC
when using a transformer.
For this application, configure the output power as continuous.
Hardware configuration
The control panel must contain the following rail modules:
• 3-SAC Security Access Control module
• 3-PPS/M Primary Power Supply module
The 3-SAC module supports the SAC bus. Power for the CRC is
taken from the 3-PPS/M and is routed with the data lines in a
cable composed of two twisted-pair wires.
SDU programming
When configuring the system for this application, you’ll need to
configure the CRC and define the appropriate lock type in the
SDU. For this application the Lock Type can be either Strike or
Maglock as required to match the lock actually used.
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