3. DAILY MAINTENANCE AND PERIODIC INSPECTION AND MAINTENANCE
3.2 Replacement Methods
II
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3.2.2 Unit
Usually, the unit is installed on the electric cabinet side.
Always replace the unit with the machine power turned OFF.
1) Disconnect all cables connected to the unit.
2) Loosen screw A. (The screw does not need to be removed.)
3) While supporting the unit with a hand, remove screw B.
4) Lift the unit upward and remove it.
5) Replace with the new unit, and fix the unit with the fixing screw at the original position.
6) Reconnect the connected cables at the original positions.
(Connect the cables to the predetermined connectors.)
7) Check that all cables have been connected correctly, and then close the electric cabinet door.
Electric cabinet
PLC unit
Fixing screw (two screws)
Lift up
Screw B
Screw A
CAUTION
Incorrect connections may damage the devices, so connect the cables to the specified
connectors.
Do not replace the control unit while the power is ON.
Do not connect or disconnect the connection cables between each unit while the power is ON.
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