Yaskawa Sigma II Indexer - Manual (Page 62)

Sigma II Indexer User’s Manual Settings According to Device Characteristics
5-7
5.2.2 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 Hardware Overtravel Function
To use the hardware overtravel function, connect the overtravel limit switch input
signal terminals shown below to the correct pins of the servo amplifier CN1 connec-
tor.
Connect limit switches as shown below to prevent damage to the devices during lin-
ear motion.
Figure 5.1 Hardware Overtravels
Drive status with an overtravel input signal (P-OT, N-OT) ON or OFF is shown in
the following table. These are the default settings.
Input o P-OT CN1-42
Forward Run Prohibited
(Forward Overtravel)
Input o N-OT CN1-43
Reverse Run Prohibited
(Reverse Overtravel)
Signal State Description
P-OT
ON= Input signal closed Forward rotation allowed, (normal operation status).
OFF=Input signal open Forward run prohibited (reverse rotation allowed).
N-OT
ON= Input signal closed Reverse rotation allowed, (normal operation status).
OFF=Input signal open 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