The Allen-Bradley 1760-LDFCA PLC System can be replaced while the system is mounted to a panel (or DIN rail).
Remove power. See important note on 2-4
On the module to be removed, remove the upper and lower mounting screws from the module (or open the DIN latches using a flat-blade or Phillips-style screwdriver)
Move the bus lever to the right to disconnect (unlock) the bus
On the right-side adjacent module, move its bus lever to the right (unlock) to disconnect it from the module to be removed
Gently slide the disconnected module forward. If you feel excessive resistance, check that the module has been disconnected from the bus,and that both mounting screws have been removed (or DIN latches opened)
N.S.E Automation Co. Ltd | Control Systems and Drives
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