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Inspection item
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
111
5
Relay output terminals
• The contacts of relays deteriorate over time. To prevent faults from occurring, relays must be replaced when they have
reached the maximum number of switching operations (switching life).
• The control terminal block must be replaced in case of failure of either relay between the relay output terminals C1 and B1
or A1, or terminals C2 and B2 or A2. (After replacing the control terminal block, connect the jumper connector to the correct
position in accordance with the control logic of input signals. (Refer to
.))
5.1.7
Removal and reinstallation of the control circuit
terminal block
This product has a removable control circuit terminal block, which can be replaced with a new one or a control terminal option.
Removal and reinstallation
1)
Loosen the two installation screws at the both side of the control circuit terminal block. (These screws cannot be
removed.)
Slide down the control circuit terminal block to remove it.
2)
Be careful not to bend the pins of the inverter's control circuit connector, reinstall the control circuit terminal block and fix
it with the mounting screws.
NOTE
• Before starting inverter replacement, switch OFF the power, wait for at least 10 minutes, and then check the voltage with a
tester and such to ensure safety.
Loosen the screws