Spectrum Controls 140 MPM 204 00sc - Manual (Page 17)

Meter Proving Module
19
Inserting the Module in the PLC Rack Inserting the Module in the PLC Rack Inserting the Module in the PLC Rack Inserting the Module in the PLC Rack Inserting the Module in the PLC Rack
Do the following to place the module in the PLC rack:
1. 1. 1. 1. 1. Ensure that the rack is properly grounded and installed in a NEMA-rated enclosure.
2. Disconnect all power to the module, and disconnect it from any connected devices. See “ Removing Power.”
W W W W WARNING ARNING ARNING ARNING ARNING Installation or removal of the module with power applied can cause an electrical
arc. An arc can cause personal injury or property damage by sending an erroneous signal to your system’s
field devices. This signal can result in unintended machine motion, an explosion in a hazardous environment,
or excessive wear to contacts on both the module and its mating connector (possibly leading to premature
failure).
3. 3. 3. 3. 3. Align the module with the top of the rack. slot.
4. 4. 4. 4. 4. Slide the module into the slot until both top and bottom are secure.
5. 5. 5. 5. 5. Apply firm, even pressure to the module to attach its backplane connector to the PLC bus connector.
Never force the module into the slot.
6. 6. 6. 6. 6. Tighten the module screws that hold the module to the rack..
7. 7. 7. 7. 7. Align the terminal block to the module in gently press until it is properly seated.
Removing the Module Removing the Module Removing the Module Removing the Module Removing the Module
To remove the module from the PLC rack:
1. Disconnect all power to the module, and disconnect it from any connected devices. See “Removing Power.”
2. Gently slide the module out of the rack slot.
W W W W WARNING ARNING ARNING ARNING ARNING Installation or removal of the module with power applied can cause an electrical arc. An arc can
cause personal injury or property damage by sending an erroneous signal to your system’s field devices. This
signal can result in unintended machine motion, an explosion in a hazardous environment, or excessive wear
to contacts on both the module and its mating connector (possibly leading to premature failure).
Field W Field W Field W Field W Field Wiring iring iring iring iring
This section provides instructions for field wiring the installed module. You will need:
•
A small flat-head screwdriver
•
Belden 8761 (shielded, twisted pair) cable or equivalent
See “
W W W W Wiring iring iring iring iring
” for wiring guidelines to keep in mind during field wiring of the module.