Honeywell Low Voltage RTP Cable (2.5M, 8.2ft.) Note 6 (NOT FOR SIL2 SYSTEMS) 900RTC-L125
Ensure that AC power to the
rack is disconnected.
Set controller module’s
communication ports to
desired settings (page 42).
Carefully place the Controller
Module in the rack,
immediately to the right of
the Power Supply. Fasten it
in place with two captured
screws at top and bottom.
Torque to 0,4-0,5 N.m
(3.5 – 4.4 Lb-In).
ATTENTION:
Do not install the battery at
this time. Installing the
battery(s) before the
controller is configured
can substantially shorten
battery life. Install under
power after the controller
configuration is complete.
(For more information, refer
to Battery
Installation/Replacement,
page 203.)
4 I/O will be installed later. See Page 77.

Table 10 – Assemble C75 Controller Rack
Step Procedure Comments/References
1 Carefully place the Power
Supplies in the slots in the
Rack, ensuring that the
connector at the back seats
properly. See Table 9 steps 1
and 2 for power supply wiring
details.
Note: It is recommended each
power supply should be
powered from a separate
power source and a power
switch should be installed to
allow for servicing of each
Processor/Supply separately.
2 Set controller communication
ports.
3
Ensure that AC power to the
rack is disconnected.
Carefully place the Controller
Modules in the rack, adjacent
to the Power Supplies.
Fasten them in place with
captured screws at top and
bottom.
Torque to 0,4 -0,5 N.m
(3.5 – 4.4 Lb-In).
ATTENTION:
The CPU battery comes
installed with a plastic tab
protruding from the battery
cover. This tab breaks the
battery circuit. Do not
remove this tab at this time.
Removing the tab before
the controller is configured
can substantially shorten
battery life. Remove the tab
under power after the
controller configuration is
complete.
(For more information, refer to
Battery
Installation/Replacement,
page 203.)
See figure in step 1.
4 Insert the RSM in the middle
slot and attach with screws at
top and bottom.
See figure in step 1
Assemble I/O Expansion Racks
I/O Expansion Rack assembly information is given in Table 11.
Table 11 – Assemble I/O Expansion Racks
Step Procedure Comments/References
1 Insert power supply into left-most slot
in the I/O rack. See Table 9 steps 1
and 2 for wiring details.
If using redundant power, your I/O rack will contain a second
smaller compartment, see 1 in the following figure. Insert first
power supply in the larger compartment as shown, to the
immediate right of the plate dividing the two compartments.
2 Redundant Power (optional):
Insert the second power supply in the
left side of the smaller compartment,
see 1 in figure above. See Table 9
steps 1 and 2 for details.
Insert the PSM between the 2 power
supplies. Fasten it in place with
screws at top and bottom.
See 1 in figure above. See Table 9 steps 1 and 2 for wiring
details.