External I/O Signal Connection Example Using An External Safety Relay Unit - Mitsubishi Electric MELSERVO-J5 User Manual

External I/O signal connection example using an external safety
relay unit
This connection is for source interfaces. For the other I/O signals, refer to the following connection examples.
Page 43 MR-J5-_G_
Page 46 MR-J5-_A_
Page 54 MR-J5W_-_G_
This connection example complies with the requirements up to ISO/EN ISO 13849-1:2015 category 3 PL e and IEC/EN 62061
SIL CL 3.
For details, refer to the safety relay module user's manual.
Configure [Pr. PF18 STO diagnosis error detection time] to achieve safety level SIL3.
24 V
Fuse
+24V
Safety relay
module
Power
MELSEC
supply
(QS90SR2S)
24G
S1 or
EMG
0 V
S1: STO shut-off switch (STO switch)
S2: Start switch (STO release switch)
S3: ON switch S4: OFF switch
KM1: Magnetic contactor
K3: Safety relay EMG:
Emergency stop switch
*1 To enable "Emergency switching off" for the shut-off by the STO function of the servo amplifier, change S1 to EMG. The stop category at
this time is "0".
Page 324 Precautions for compliance with stop category 1 (IEC/EN 60204-1)
8 USING STO FUNCTION
328
8.3 Connection example
S2 K3
XS0 XS1 Z00 Z10 Z20
Control
circuit
X0 X1 Z01 Z11 Z21
COM0 COM1
*1
S4
S3
KM1
KM1
Servo amplifier
CN8
Control circuit
STO1
STO2
STOCOM
TOFB1
K3
TOFB2
TOFCOM
CN3
EMG
KM1
EM1
or
EM2
M
Servo motor