PIM00411
9-1
Chapter 9
Electric Wiring
・
This hydraulic unit needs connections of main power cables and I/O signal cables as required.
・
Please remove the controller cover by loosening and removing the Cross head screws M4×4, then connect the
main power cables and I/O signal cables. After completing the wiring, please replace the controller cover. The
recommended tightening torque is 1.0 N
･
m.
・
Connect the main power cable and I/O signal cables through the specified wiring holes.
・
In order to protect the electric circuit against short-circuiting and overcurrent and prevent electric shocks, the
hydraulic unit main power supply must be equipped with a no-fuse breaker conforming to European Norm
EN60947-2.
・
For the power supply connection device, use a switch that provides 3 mm or longer contact distance for three
electrodes in the OFF status.
Controller cover mounting screws
(M4 × 4)
Recommended torque 1N · m
Controller cover
I/O single wiring port
φ
21
Main power supply
wiring port
φ
28
DANGER
●
Please attach the no fuse breaker that conforms to the European standard EN60947-2 to the power line, in
order to reduce the risk of electric shock and protect the electrical circuit against over-current or short-
circuit. (Please refer to "9.2 Installation of breaker" for the capacity of each model.)
●
Please connect the ground terminal by the D class grounding method (formerly Class 3 grounding).
( Please directly connect, do not go through the breaker.)
●
Before connecting the cables, please wait 5 minutes after turning off the main power supply. There is a risk
of electrical shock.
●
Do not apply an excessive power supply voltage higher than the power supply rating of the hydraulic unit.
Otherwise, the controller may be damaged.
●
Please do not make cables and terminals short circuit or ground fault. There is a risk of electrical shock or
fire.
●
When you peel the wires, please be careful not to scratch the conductor.
●
Please use the cable clamp and multi-core cable for wiring, make sure the wiring satisfy the IP54 protection
grade or more.
