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MDS-D-SVJ3/SPJ3 Series Instruction Manual
2-8 Wiring of the peripheral control
2 - 43
2-8-5 Safety observation function
By using the safety observation function, the safety door, etc. can be opened during operation without
shutting the power. This function contributes to reducing preparation time and improving operation. The
safety is observed in the control section (NC) and drive section (servo drive unit and spindle drive unit). If
safety conditions are not satisfied in either system, emergency stop operation is applied and the power is
shut to secure the safety.
(1) Connection
The following three wirings are required for the safety observation.
[1] The state signal for the safety door of the machine is wired to both the NC unit side (DI) and drive
unit side (CN9 connector DI1). The double-protection for the wiring must be provided by wiring the
signal to each of the NC side and drive unit side as the following figure.
[2] Add the wiring to control the contactor in the NC unit side in order to shut the power when an error
occurs.
[3] In addition to the emergency stop wiring for the NC unit, add the external emergency stop wiring for
the CN3 connector.
MDS
-
D
-
SVJ3
MDS
-
D
-
SPJ3
ON/OFF
EMGX
MC
EMGX
MC
DI1
NC
Machine safety door
Contactor
(Note)
Prepared by
user
Contactor
unit
3-phase AC
power supply
Emergency
stop switch
Open/close switch (sensor)
Breaker
or
fuse
(Note)
Prepared by
user
Breaker
or
fuse
(Note)
Prepared by
user
Circuit protector
(Note)
Prepared by user
Circuit protector
(Note)
Prepared by user
Contactor
(Note)
Prepared by
user