Eaton Cutler-Hammer IQ 300 Series Instructions For Installation, Operation And Maintenance

IL17574CPage 6-2 Effective Date: 2/04IQ 300Page 6-2 Effective Date: 2/04For more information visit: www.cutler-hammer.eaton.comTHE CONTROL POWER SUPPLY CIRCUIT BEFORE TOUCHING THECONNECTIONS OR COMPONENTS ON THE REAR FACE OF THE IQ 300BASE UNIT.6.2.1 General Safety Precautions• Turn off, lock out and tag all sources of system power to the IQ 300 Base Module.• Temporarily install a short circuit between the output legs of each currenttransformer connected to the IQ 300 Base Module, and tag.• Disconnect the Category 5 cable from the IQ 300 Base Module, and mark it forlater reconnecting.• If the IQ 300 Base Module is attached to the IQ 300 Display Module, detach it byremoving the four #10 screws that secure the Base to the mounting brackets.• Grasp the IQ 300 Display Module to prevent it from falling and remove the hexnuts and washers that secure the mounting brackets, gasket and Display Module tothe panel.• Withdraw the IQ 300 Display Module and gasket (if in use).• To reinstall or to replace the IQ 300 Display Module, reverse the above steps.6.2.2 IQ 300 Base ModulePerform the following steps to replace the IQ 300 Base Module:• Disconnect the Category 5 cable from the IQ 300 Base Module and mark it forlater reconnecting.• Disconnect the INCOME cable, if used, and mark it for later reconnecting.• Disconnect all system voltage and current leads, and mark them for reconnecting.Making a simple sketch of the connections may be helpful during reinstallation.• Remove the ground connection and mark it for reconnecting.• If the IQ 300 Base Module is attached to the IQ 300 Display Module, detach it byremoving the four #10 screws that secure the Base to the mounting brackets.• If the IQ 300 Base Module is mounted using the DIN clip, remove it bydisengaging the DIN clip mounted on the IQ 300 Base Module from the IN rail• Turn off, lock out and tag the IQ 300 Base Module power supply circuit.• To reinstall or to replace the IQ 300 Base Module, reverse the above steps.6.2.3 IQ 300 Display ModulePerform the following steps to replace the IQ 300 Display Module:• Disconnect the Category 5 cable from the IQ 300 Base Module, and mark it forlater reconnecting.• If the IQ 300 Base Module is attached to the IQ 300 Display Module, detach it byremoving the four #10 screws that secure the Base to the mounting brackets.• Grasp the IQ 300 Display Module to prevent it from falling and remove the hexnuts and washers that secure the mounting brackets, gasket and Display Module to