ABB Symphony Harmony Series, Инструкция, Страница: 274 / 402

WBPEEUI240751C0 PR28 - 1
PR28
I/O Module Removal
Purpose/Scope
This procedure gives the steps required to remove an I/O mod-
ule from its base. The removal procedure is the same for all
I/O modules. An I/O module can be removed with power on.
NOTE: Always follow the instructions given in
Special Handling
in Section 5
when handling an I/O module.
Parts
None.
Tools
•
Flat-blade or Phillips screwdriver.
•
Thin rod for reset button, preferably nonmetallic.
Safety Considerations
Procedure
□
1. Depress the stop/reset button once to halt block operation
if not already halted.
□
2. Loosen the captive front panel fastening screw
(Fig.
PR28-1 ).
□
3. Grasp the I/O module by its handle and gently pull.
1 min.
WARNING
1. An I/O module should not be inserted or removed with power
applied when located in a class I, division 2 hazardous location
unless the area is known to be nonhazardous.
CAUTION
1. For analog input channels, if the fused AI IFP/LFP option is
selected to power a 4 to 20 milliampere input, removing the I/O
module from the base in nonredundant applications will result
in a loss of power to all input current loops.
W1