Forward/Reverse Run Prohibited Inputs (Overtravel Inputs) - Omron SJDE-ANA-OY Manual

3.7.4 Forward/Reverse Run Prohibited Inputs (Overtravel Inputs)

• When executing JOG operation and the home position search operation using CX-Drive, the P-OT
and N-OT signals will be ignored. Alternative measures must be taken in case of overtravel.
The usual connection for forward/reverse run prohibited inputs P-OT and N-OT is shown below.
Connect these signals to limit switches to forcibly stop the servomotor when the machine movable part
travels beyond the allowable motion range. The servomotor will decelerate to a stop, and then the zero
clamp is performed. The maximum torque during deceleration to a stop will be the servomotor maxi-
mum torque.
Note: For forward/reverse run prohibited inputs, the SERVOPACK processing for stop-
ping is executed by the software. As the safety specifications of some applica-
tions may not satisfy local safety requirements, add external safety circuits as
required.
Signal Name
Forward Run
Prohibited Input
Reverse Run
Prohibited Input
Related Parameters
Parameter
n.2
Pn.50A
n.8
n. 4
Pn.50B
n. 4
WARNING
24-VDC
power supply
24V
+24VIN
0V
0V
Signal
P-OT
ON at low (L) level
OFF at high (H) level
N-OT
ON at low (L) level
OFF at high (H) level
Forward run permitted when CN1-4 input signal is ON (L level)
Always forward run allowed
Reverse run permitted when CN1-3 input signal is ON (L level)
Always reverse run allowed
SERVOPACK
CN1-5
Photocoupler
3.3 k
P-OT CN1-4
7 mA
Photocoupler
3.3 k
N-OT
CN1-3
7 mA
Function
Forward run allowed (normal status)
Forward run prohibited (reverse run is
allowed)
Reverse run allowed (normal status)
Reverse run prohibited (forward run is
allowed)
Descriptions
49
3.7 I/O Signals