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9 Power Backup System
MITSUBISHI CNC
(3) Connection of tool escape request signal
When using the retraction function at power failure, input the DO2 signal of MDS-D/DH-PFU(CN43) to DI of the NC
so that DO2 can turn ON the retraction request signal (YCDE) through the PLC sequence.
< Connection example for tool escape request signal >
When using external 24V power (connection to source type input DI)
When using external 24V power (connection to sink type input DI)
AL2
AL1
24G
24V
1B
2B
1A
NC
5B
10B
10A
V24V
DO_COM
DO2
DO_COM2
24V
MDS-D/DH-PFU
(CN43)
COM
2.2kΩ
2.2kΩ
2.2kΩ
2.2kΩ
[ Regenerative resistor unit ]
Control
unit
Source type
24V power
AL2
AL1
24G
24V
1B
2B
1A
NC
5B
10B
10A
0V24V
DO_COM
DO2
DO_COM2
24V
0V
MDS-D/DH-PFU
(CN43)
COM
2.2kΩ
2.2kΩ
2.2kΩ
2.2kΩ
Sink type
Control
unit
24V power
[ Regenerative resistor unit ]