Mounting The Arm-4 Auxiliary Relay Module - Johnson Controls FC-2000 Installing Instruction

Mounting the
ARM-4 Auxiliary
Relay Module
To install the ARM-4, complete the following steps and refer to Figure 16.
1. Select a position on the chassis for the ARM-4. The module can be
driven by either a CRM-4 or a CRE-4. It can be placed against the
chassis in any one of eight positions relative to the CRM-4 or CRE-4
as illustrated in Figure 16. The ARM-4 can also be installed directly
underneath the CRM-4 or CRE-4. One ARM-4 can support one
CRM-4 or one CRE-4. If auxiliary relays for both modules are
desired, two ARM-4s, mounted in separate positions, will be needed.
Note: For ease of installation and service, mount the ARM-4 in a
dedicated position on the chassis (if available) with no module
or expander board above it.
2. Secure the two loose standoffs to the screw mounts on the chassis at
the desired location for the ARM-4. Ensure that the existing standoffs
are installed in the locations illustrated in Step 4 of Figure 16.
3. Position the ARM-4 over the standoffs on the chassis and fasten with
the two remaining screws.
4. Complete the installation of the ARM-4 by connecting one end of the
ARM-4 ribbon cable to plug P1 on the ARM-4. Connect the other
end of the cable to jumper JP5 on the CRM-4 or CRE-4 employed to
drive the ARM-4.
Installation—Installing the FC-2000 23