Mitsubishi Electric FR-A862 Instruction Manual page 77

Inspection item
5.1.7
Removal and reinstallation of the control circuit
terminal block
The FR-A800 series inverter 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 mounting 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.
Loosen the screws
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 the replacement, power OFF the inverter, wait for at least 10 minutes, and then check that the charge lamp is
OFF to ensure safety.
Removal and reinstallation precautions
Precautions to be taken when removing or reinstalling the control circuit terminal block are shown below.
Observe the following precautions and handle the inverter properly to avoid malfunctions or failures.
• To remove or reinstall the control circuit terminal block, keep it upright so that it is parallel with the inverter.
• To install the control circuit terminal block, slide it upward so that the tongues on the inverter slot into the grooves on the terminal block.
• Check that the terminal block is parallel to the inverter and the pins on the inverter control circuit connector are not bent.
After checking proper connection, fix the terminal block in place with two screws.
A
Insert the
terminal block
parallel to the
inverter.
NOTE
• Do not tilt the terminal block while tightening the screws or removing it from the inverter. (Otherwise, stress applied to the
control circuit terminal block or the control circuit connector may damage the pins.)
• 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
76
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Slot the tongue into the groove.
page 36.)
Inverter's control
circuit connector
Fasten the screws.
Inverter's control
circuit connector
View from side A
Control circuit terminal block
Control circuit terminal block