Removing/Replacing An I/O Module (Hot Swapping) - Emerson ControlWave Instruction Manual

5.2.5 Removing/Replacing an I/O Module (Hot Swapping)

WARNING
Caution
Revised Aug-2015
ControlWave I/O Expansion Rack Instruction Manual
Remove the CPU module. See Section 5.2.3. You must remove the
5.
CPU module in order to remove the PSSM.
6. Loosen the two captured panel fasteners that secure the PSSM
module to the chassis and carefully slide it out the front of the
chassis.
7. To replace a PSSM module, power must be off and the CPU
module must be removed. Carefully align the PSSM module with
the guides for slot 1 and insert the module into the housing. When
the module correctly seats in the backplane, turn the module's
captured panel fasteners clockwise to secure the PSSM module;
this establishes a low resistance path between the PSSM module
and chassis ground. Make sure the fasteners are tight, but don't
over-tighten them.
8. Replace the CPU module.
Replace power and watchdog cables and then restore power and
9.
test the unit.
DO NOT ATTEMPT hot swapping in a Class I, Division 2 hazardous
location.
The ControlWave I/O expansion rack supports removal of any or all I/O
modules from the housing while the application is running. This is
called "hot swapping." When you initially remove or replace any I/O
module, the ControlWave I/O rack halts operation for 300 milliseconds
before resuming operation from where it halted. During this momentary
halt, the Port 80 display shows "CA" on its screen.
Never try to "hot swap" more than one I/O module simultaneously. You
can remove or replace multiple modules sequentially, but not at the
same time.
If the ControlWave I/O rack is running, place any critical control
1.
processes that use this I/O module under manual control.
2. Loosen the capture fasteners at the top and bottom of the module
by turning them counter-clockwise.
Service & Troubleshooting 5-7