8 USING STO FUNCTION [G] [A]
8.3 Connection example
221
8
External I/O signal connection example using an external safety
relay unit
This connection is for source interface. For the other I/O signals, refer to the following connection examples.
This connection example complies with the requirements of ISO/EN ISO 13849-1:2015 Category 3 PL d.
For details, refer to the safety relay module user's manual.
*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". If STO is turned off while the servo motor is rotating, [AL. 063 STO timing error] occurs.
24 V
0 V
S2
K3
+24V
XS0
XS1
Z00 Z10 Z20
X0
COM0
24G
X1
COM1
Z01 Z11 Z21
K3
CN8
KM1
CN3
20
EM1
EM2
STO1
TOFB1
TOFCOM
TOFB2
STO2
STOCOM
M
KM1
KM1
EMG
S4
S3
Fuse
Safety relay
module
MELSEC
(QS90SR2S)
Power
supply
Control
circuit
Servo amplifier
Control circuit
S1 or
EMG
*1
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
or
Servo motor
Содержание MR-J5 Series
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