IL17574C
Page 6-2
Effective Date: 2/04
IQ 300
Page 6-2
Effective Date: 2/04
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THE CONTROL POWER SUPPLY CIRCUIT BEFORE TOUCHING THE
CONNECTIONS OR COMPONENTS ON THE REAR FACE OF THE IQ 300
BASE 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 current
transformer connected to the IQ 300 Base Module, and tag.
• Disconnect the Category 5 cable from the IQ 300 Base Module, and mark it for
later reconnecting.
• If the IQ 300 Base Module is attached to the IQ 300 Display Module, detach it by
removing 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 hex
nuts and washers that secure the mounting brackets, gasket and Display Module to
the 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 Module
Perform the following steps to replace the IQ 300 Base Module:
• Disconnect the Category 5 cable from the IQ 300 Base Module and mark it for
later 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 by
removing 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 by
disengaging 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 Module
Perform the following steps to replace the IQ 300 Display Module:
• Disconnect the Category 5 cable from the IQ 300 Base Module, and mark it for
later reconnecting.
• If the IQ 300 Base Module is attached to the IQ 300 Display Module, detach it by
removing 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 hex
nuts and washers that secure the mounting brackets, gasket and Display Module to