Fitting of Counting Modules
Original instructions
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At a Glance
The counting modules are powered by the rack bus. The modules may be handled without turning off power supply to the rack, without damage or disturbance to the PLC.
Fitting operations (installation, assembly, and disassembly) are described below.
Installation Precautions
The counting modules may be installed in any of the positions in the rack except for the first two (marked PS and 00) which are reserved for the rack power supply module (BMX CPS ••••) and the processor (BMX P34 ••••) respectively. Power is supplied by the bus at the bottom of the rack (3.3 V and 24 V).
Before installing a module, you must take off the protective cap from the module connector located on the rack.
DANGER
HAZARD OF ELECTRIC SHOCK
  • Turn off all power to sensor and pre-actuator devices before connection of disconnection of the terminal block.
  • Remove the terminal block before plugging / unplugging the module on the rack.
Failure to follow these instructions will result in death or serious injury.
Installation
The diagram below shows counting module BMX EHC 0200 mounted on the rack:
The following table describes the different elements which make up the assembly below:
Number
Description
1
BMX EHC 0200 counting module
2
Standard rack
Installing the Module on the Rack
The following table shows the procedure for mounting the counting module in the rack:
Step
Action
Illustration
1
Position the locating pins situated at the rear of the module (on the bottom part) in the corresponding slots in the rack.
NOTE: Before positioning the pins, make sure you have removed the protective cover.
Steps 1 and 2
2
Swivel the module towards the top of the rack so that the module sits flush with the back of the rack. It is now set in position.
3
Tighten the mounting screw to ensure that the module is held in place on the rack.
Tightening torque: 0.4...1.5 N•m (0.30...1.10 lbf-ft)
Step 3