Sto I/O Signal Connector (Cn8) And Pin Assignment - Mitsubishi Electric MELSERVO-J4 Series Instruction Manual

13.2
STO I/O signal connector (CN8) and pin
assignment
Pin assignment
The pin assignment of the connectors is as viewed from the cable connector wiring section.
Servo amplifier
Signal (device) explanations
I/O device
Signal Connector pin
name No.
STOCOM CN8-3
STO1 CN8-4
STO2 CN8-5
TOFCOM CN8-8
TOFB1 CN8-6
TOFB2 CN8-7
13 USING STO FUNCTION
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13.2 STO I/O signal connector (CN8) and pin assignment

STO I/O signal connector
CN8
2 1
4 3
STO1
STOCOM
6 5
TOFB1 STO2
8 7
TOFB2
TOFCOM
Description
Common terminal for input signal of STO1 and STO2
Input STO state 1.
STO state (base circuit shut-off): Open between STO1 and STOCOM.
STO release state (in driving): Close between STO1 and STOCOM.
Be sure to turn off STO1 after the servo motor stops by the servo-off state or with forced stop deceleration by
turning off EM2 (Forced stop 2).
Input STO state 2.
STO state (base circuit shut-off): Open between STO2 and STOCOM.
STO release state (in driving): Close between STO2 and STOCOM.
Be sure to turn off STO2 after the servo motor stops by the servo-off state or with forced stop deceleration by
turning off EM2 (Forced stop 2).
Common terminal for monitor output signal in STO state
Monitor output signal in STO1 state
STO state (base circuit shut-off): Between TOFB1 and TOFCOM is closed.
STO release state (in driving): Between TOFB1 and TOFCOM is opened.
Monitor output signal in STO2 state
STO state (base circuit shut-off): Between TOFB2 and TOFCOM is closed.
STO release state (in driving): Between TOFB2 and TOFCOM is opened.
I/O
division
DI-1
DI-1
DI-1
DO-1
DO-1
DO-1