Modicon X80 Rack Extender Module Installation
Original instructions
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Introduction
The BMXXBE1000 rack extender module is installed similarly to the other modules in the rack with these special considerations:
Rack Extender Module Grounding
The BMXXBE1000 rack extender module is equipped with a grounding plate at the rear for grounding purposes: 
1
Mounting screw 
2
Grounding plate 
3
Contact strips
When the module is correctly installed on the rack, the contact strips connect the grounding bus of the module to the grounding bus of the rack.
DANGER
HAZARD OF ELECTRIC SHOCK
Check that ground contact strips are available and not bent out of shape.
Failure to follow these instructions will result in death or serious injury.
NOTE: If ground contacts strips are bent or not available, do not use the module and contact your Schneider Electric representative.
Extender Module Installation
DANGER
HAZARD OF ELECTRIC SHOCK
Remove all power sources before installing the rack extender module.
Failure to follow these instructions will result in death or serious injury.
Install a rack extender module in a rack:
Step
Action
1
Remove all power sources to the rack.
2
Using the microswitches on the side of the rack extender module, set a unique address for that rack from 00 to 08. Confirm that the address assigned to each extended rack is unique with respect to all other extended racks.
3
Remove the protective cover from the connector of the module slot labeled XBE (rightest module slot of the rack).
4
Position the locating pin at the rear of the module (lower part of the module) in the centering hole of the module slot labeled located XBE.
Swivel the module towards the top of the rack so that the module sits flush with the rack.
Tighten the mounting screw to hold the module in place on the rack.
Tightening torque: 0.4...1.5 N•m (0.30...1.10 lbf-ft)
WARNING
UNINTENDED EQUIPMENT OPERATION
Check that the mounting screw is securely tightened to ensure the module is firmly attached to the rack.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
Step
Action
5
Connect each extended rack to the rack immediately before it and immediately after it using the appropriate extension cable.
6
Terminate the unused connector on the extender module in the main extended rack and the unused connector on the last extended rack. Use a line terminator labeled A/ on one end of the extended rack and a line terminator labeled /B on the other end of the extended rack.