YASKAWA SGM-A3 User Manual page 68

3) Use the following user constants (memory switch) to specify whether input signals for
overtravel are to be used.
Use of P-OT Input Signal
Cn-01 Bit 2
Use of N-OT Input Signal
Cn-01 Bit 3
Specifies whether the P-OT input signal for pro-
hibiting forward rotation at overtravel (1CN-42) is
to be used and whether the N-OT input signal for
prohibiting reverse
(1CN-43) is to be used.
Specifies "1" when external short-circuit wiring is
to be omitted.
Bit Setting
Uses the P-OT input signal for prohibiting forward rotation. (Forward
0 rotation is prohibited when 1CN-16 is open. Forward rotation is allowed
when 1CN-42 is at 0 V.)
Bit 2 Bit 2
Does not use the P-OT input signal for prohibiting forward rotation.
1 (Forward rotation is always allowed. This has the same effect as shorting
1CN-42 to 0 V.)
Uses the N-OT input signal for prohibiting reverse rotation. (Reverse
0 rotation is prohibited when 1CN-17 is open. Reverse rotation is allowed
when 1CN-43 is at 0 V.)
Bit 3 Bit 3
Does not use the N-OT input signal for prohibiting reverse rotation.
1 (Reverse rotation is always allowed. This has the same effect as shorting
1CN-43 to 0 V.)
4) If the P-OT and N-OT input signals are used, set the following user constants to specify
how to stop the motor.
How to Stop Motor at
Cn-01 Bit 8
Overtravel
Operation to be Performed
Cn-01 Bit 9 when Motor Stops after
Overtravel
• Inputs signal for prohibiting forward rotation
(P-OT, 1CN-42)
• Inputs signal for prohibiting reverse rotation
(N-OT, 1CN-43)
Specify how to stop the motor when either of the
above signals is input.
3.1 Setting User Constants According to Machine Characteristics
Factory
Setting: 0
Factory
Setting: 0
rotation at overtravel
Meaning
Factory
Setting: 0
Factory
Setting: 0
For Speed/Torque Control
and Position Control
For Speed/Torque Control
and Position Control
Servopack
-42
-43
The short-circuit wiring shown in the
figure can be omitted when P-OT and
N-OT are not used.
For Speed Control and
Position Control
For Speed Control and
Position Control
Overtravel
Stop mode After stop
Stop by
0
dynamic brake
Releasing
0
Bit 6
dynamic brake
1
Coasting to a
stop
Bit 8
Releasing
0
dynamic brake
Deceleration
1 Servo OFF
Bit 9
stop
1 Zero-clamp
3
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