User's Manual

How to Install the ISONAS IP-Enabled Reader-controller 31
2.2.12: WIRING THE DUAL-SRM
The dual Secondary Relay Module (SRM) is available to enhance the PowerNet’s
ability to control devices located at the door.
The SRM provides a set of form-C relay contacts, which are controlled by one of the
PowerNet’s TTL outputs. There a multiple options available within the Crystal Matrix
software to control the TTL outputs.
The SRM is commonly used to selectivity control two locks, or to control a device
located at the door, in addition to the door’s lock.
Two example SRM usages are shown below.
Figure 16 shows a PowerNet controlling two locks. Note Tan wire’s power supply
can be configured by JP2. See section 2.2.2 of this manual for more details.
Figure 17 shows the PowerNet controlling an external device, in addition to the
potentially controlling the door’s lock.
Figure 16