YASKAWA SGDS Sigma III Series User Manual page 200

(2) Using the Overtravel Function
To use the overtravel function, connect the overtravel limit switch input signal terminals shown below to the
correct pins of the SERVOPACK CN1 connector.
→ Input P-OT CN1-7
→ Input N-OT CN1-8
Connect limit switches as shown below to prevent damage to the machines during linear motion.
Reverse rotation end
Servomotor
Limit
switch
Drive status with an input signal ON or OFF is shown in the following table.
P-OT CN1-7 at low level
when ON
CN1-7 at high level
when OFF
N-OT
CN1-8 at low level
when ON
CN1-8 at high level
when OFF
(3) Enabling/Disabling Input Signals
Set the following parameters to specify whether input signals are used for overtravel or not. The factory setting is
"used."
SERVOPACK
CN1-7
(P-OT)
CN1-8
(N-OT)
0 V
Parameter
Pn50A n. 1
n. 8
Pn50B n.
n.
Forward Run Prohibited
(Forward Overtravel)
Reverse Run Prohibited
(Reverse Overtravel)
Forward rotation end
Limit
switch
SERVOPACK
P-OT
CN1-7
N-OT
CN1-8
Forward rotation allowed. Normal operation status.
Forward run prohibited (reverse rotation allowed).
Reverse rotation allowed. Normal operation status.
Reverse run prohibited (forward rotation allowed).
The short-circuit wiring shown in the figure can be
omitted when P-OT and N-OT are not used.
Uses the P-OT input signal for prohibiting forward rotation. (Forward rotation is prohibited
when CN1-7 is open and is allowed when CN1-7 is at 0 V.) (Factory setting)
Does not use the P-OT input signal for prohibiting forward rotation. (Forward rotation is
always allowed and has the same effect as shorting CN1-7 to 0 V.)
2 Uses the N-OT input signal for prohibiting reverse rotation. (Reverse rotation is prohibited
when CN1-8 is open and is allowed when CN1-8 is at 0 V.) (Factory setting)
8 Does not use the N-OT input signal for prohibiting reverse rotation. (Reverse rotation is
always allowed and has the same effect as shorting CN1-8 to 0 V.)
7.3 Settings According to Machine Characteristics
Position Control
Position Control
Description
7-9