Power Supply Connection; Connection Example When Controlling The Electromagnetic Switch With An External Sequence Circuit - Mitsubishi Electric MDS-B-SPJ2 Series Specification Manual

5.4 Power supply connection

1. Do not exceed the power supply voltage, capacity, etc., specified in the controller specifications.
Failure to observe this could result in damage or failure.
2. Always install a no-fuse breaker or earth leakage breaker for safety, and be sure the power is
turned OFF at the breakers during abnormalities or inspections. A large rush current is flowed
when the power is turned ON. Refer to section 5.6, and select an appropriate no-fuse breaker or
earth leakage breaker.
3. The wire size will differ according to the amplifier capacity. Refer to the table in section 5.6, and
select the appropriate wire size.
4. Always install an electromagnetic switch for safety, and be sure that the power turns OFF when
abnormalities occur. There is an electromagnetic switch control function in the MDS-B-SPJ2. An
external relay is required for this function. When there is a convertor unit MDS-B-CV in the system,
the electromagnetic switch control function of the convertor can be used.
The MDS-B-CV can directly drive the electromagnetic switch.
5.4.1 Connection example when controlling the electromagnetic switch
with an external sequence circuit
Create a sequence that turns
OFF when alarms occur.
3-phase
ＮＦＢ
200 to 230V
24VDC
External
emergency stop
5. Connections
External emergency stop
RA
ＭＣ1
Servo amplifier
M D S - B - S V J 2
Ｌ１
Ｌ２
Ｔ１
Ｌ３
Ｌ１１
Ｔ２
Ｌ２1
24VDC
CN3
VDD 1 0
COM 5
MC 1 5
Mitsubishi
Emergency
CNC
→
stop
CN1A
←
Alarm
Cable SH21
CAUTION
MC1
Ｌ１
Ｌ２
Ｌ３
Ｌ１１
Ｌ２1
CN3
P24
24G
MCON*
ＰＥ
Class 3
grounding
or higher
→
Emergency stop
CN1B
← Alarm
5 − 11
Spindle amplifier
M D S - B - S P J 2
Ｔ１
Ｔ２
24VDC
1 4
1 1
1 0
ＰＥ
Class 3
grounding
or higher
Terminator
CN1A CN1B
MDS-A-MT