Signal (Device) Explanations; How To Pull Out The Sto Cable - Mitsubishi Electric MELSERVO-J4 series Instruction Manual

13. USING STO FUNCTION

13.2.2 Signal (device) explanations

(1) I/O device
Connector
Signal name
pin No.
STOCOM CN8-3
STO1 CN8-4
STO2 CN8-5
TOFCOM CN8-8
TOFB1 CN8-6
TOFB2 CN8-7
(2) Signals and STO state
The following table shows the TOFB and STO states when the power is on in normal state and STO1
and STO2 are on (closed) or off (opened).
Input signal
Between TOFB1 and TOFCOM
STO1 STO2
(Monitoring STO1 state)
Off Off On: STO state (base circuit shut-off) On: STO state (base circuit shut-off)
Off On On: STO state (base circuit shut-off) Off: STO release state
On Off Off: STO release state
On On Off: STO release state
(3) Test pulse of STO input signal
Set the test pulse off time inputted from outside to 1 ms or less.

13.2.3 How to pull out the STO cable

The following shows how to pull out the STO cable from the CN8 connector of the servo amplifier.
Common terminal for input signal of STO1 and STO2
Inputs STO state 1.
STO state (base 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).
Inputs STO state 2.
STO state (base 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 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 shut-off): Between TOFB2 and TOFCOM is closed.
STO release state (in driving): Between TOFB2 and TOFCOM is opened.
Between TOFB2 and TOFCOM
On: STO state (base circuit shut-off)
Off: STO release state
While pressing knob 1) of the STO cable plug in the
direction of the arrow, pull out the plug 2).
2)
1)
13 - 5
Description
State
(Monitoring STO2 state)
Between TOFB1 and TOFB2
(Monitoring STO state of servo
amplifier)
On: STO state (base circuit shut-off)
Off: STO state (base circuit shut-off)
Off: STO state (base circuit shut-off)
Off: STO release state
I/O
division
DI-1
DI-1
DI-1
DO-1
DO-1
DO-1