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7. Wiring and Connection
7 - 10
7-5 Connection of main circuit power supply
CAUTION
1. Make sure that the power supply voltage is within the specified range of
the servo drive unit. Failure to observe this could lead to damage or faults.
2. For safety purposes, always install a circuit protector, and make sure that
the circuit is cut off when an error occurs or during inspections. Refer to
Chapter 5 and select a no fuse breaker.
3. The wire size will differ according to each drive unit capacity. Refer to
Chapter 5 and select the size.
4. For safety purposes, always install a contactor (magnetic contactor) on the
main circuit power supply input. Large rush currents will flow when the
power is turned ON. Refer to Chapter 5 and select the correct contactor.
Drive the contactor via the relay from the CN9 connector's contactor control output (MC). Some types of
contactors can be directly driven with 24VDC.
Contactor control relay
(There are also types that
are built into the contactor.)
Circuit
protector
Contactor
Mitsubishi NC
SH21 cable
3-phase
200 to 230V
Emergency stop alarm
L1
MDS-R-V1/V2
CN30
Terminator (A-TM) or
battery unit (MDS-A-BT-)
15
MC
10
VDD
5
COM
24VDC
power supply
L2
L3
CN22
CN1A CN1B
CN9