Mitsubishi Electric FR-D720S SC EC Instruction Manual page 61

Wiring
Safety stop when operating multiple frequency inverters in parallel
Wiring of frequency inverters FR-D700 SC
The safety stop function can be applied when using multiple FR-D740 SC and FR-D720S SC in-
verters. Connect as shown in the diagram below.
Details of the safety stop function are written on the "FR-D700 SC EC – Safety stop function in-
struction manual (BCN-A211508-005)". You can download the manual from the Mitsubishi
homepage.
24V DC
Fig. 3-16: Connection of multiple frequency inverters to a safety relay module when using the
FR-D700 SC EC
START
Emergency
stop button
+24V X0 COM0 X1 COM1 XS0 XS1 Z00
Internal
K1
safety
circuit
K2
24G Z01
Safety relay module
MITSUBISHI MELSEC
QS90SR2SN-Q
safety stop function
RUN (SAFE2)
SE
Z10 Z20
S1
S2
+24 V
Z11 Z21
SC
RUN
(SAFE2)
SE
S1
S2
+24 V
SC
Control circuit specifications
R/L1 S/L2 T/L3
IGBTs
CPU
Gate Gate
driver driver
G G
M
3~
FR-D700 SC
U V
IM
R/L1 S/L2 T/L3
Gate Gate IGBTs
CPU
driver driver
G G
FR-D700 SC
U V
IM
W
W
I002184E
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