Connection Example For Cn8 Connector; External I/O Signal Connection Example Using The Mr-J3-D05 Safety Logic Unit - Mitsubishi Electric MELSERVO MR-J5 Series User Manual

Connection example for CN8 connector

This servo amplifier is equipped with the connector (CN8) which enables the STO function. When this connector is used with
a certified external safety relay, power to the motor can be safely removed and unexpected restart can be prevented. The
safety relay used should meet the applicable safety standards and have forcibly guided contacts or mirror contacts for the
purpose of error detection.
The following diagram is for source interfaces. For sink interfaces, refer to the following.
Page 458 Sink I/O interface
STO1
*2
STO2
24 V DC
Door
*3
*1 With TOFB, whether the servo is in the STO state can be confirmed. Refer to the following for a connection example.
Page 456 External I/O signal connection example using an external safety relay unit
The safety level depends on the setting values of [Pr. PF18 STO diagnosis error detection time] and [Pr. PSD18_Permissible time for
mismatches DI1] and whether STO input diagnosis by TOFB output is performed or not. For details, refer to [Pr. PF18] and [Pr. PSD18]
in the following manuals.
MR-J5-G/MR-J5W-G User's Manual (Parameters)
MR-J5-B/MR-J5W-B User's Manual (Parameters)
MR-J5-A User's Manual (Parameters)
*2 When using the STO function, turn off STO1 and STO2 at the same time. Also, before turning off STO1 and STO2, stop the servo motor
in the servo-off state or with forced stop deceleration by turning off EM2 (Forced stop 2).
*3 Configure the interlock circuit so that the door opens after the servo motor stops.
External I/O signal connection example using the MR-J3-D05
safety logic unit
This connection is for source interfaces. For the other I/O signals, refer to the following connection examples.
Page 53 Example I/O signal connections
Servo amplifier
CN8
Approx. 3.0 kΩ
*2
STO1 4
Approx. 3.0 kΩ
STO2 5
3
STOCOM
Open
CN8
*1
6 TOFB1
8
TOFCOM
7 TOFB2
8 USING STO FUNCTION
8.3 Connection example
8
453