Yaskawa Sigma II Series Servo System - Manual (Page 92)

Sigma II User’s Manual Chapter 5: Parameter Settings and Functions
5 - 6
5.1.2 Setting the Overtravel Limit Function
The overtravel limit function forces movable equipment parts to stop if they exceed
the allowable range of motion.
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 servo amplifier CN1 connector.
Connect limit switches as shown below to prevent damage to the devices during
linear motion.
Drive status with an input signal ON or OFF is shown in the following table.
Input P-OT CN1-42
Forward Run Prohibited
(Forward Overtravel) Speed/Torque Control,
Position Control
Input N-OT CN1-43
Reverse Run Prohibited
(Reverse Overtravel) Speed/Torque Control,
Position Control
Signal State Input Level Description
P-OT
ON CN1-42: low
Forward rotation allowed, (normal operation
status).
OFF CN1-42: high
Forward run prohibited (reverse rotation
allowed).
N-OT
ON CN1-43: low
Reverse rotation allowed, (normal operation
status).
OFF CN1-43: high
Reverse run prohibited (forward rotation
allowed).
Forward rotation end Reverse rotation end
Limit
switch
Servomotor
Servo Amplifier
CN1-42
CN1-43
N-OT
P-OT
Limit
switch