Yaskawa SGDB - Manual (Page 68)

APPLICATIONS OF Σ-SERIES PRODUCTS
3.1.2 Setting the Overtravel Limit Function
56
3.1.2 Setting the Overtravel Limit Function
The overtravel limit function forces the moving part of the machine to stop when it ex-
ceeds the movable range.
J Using the Overtravel Limit Function
To use the overtravel limit function, connect the following input signal terminals correctly.
→ Input P-OT 1CN-42
Forward Rotation Prohibited
(Forward Overtravel)
For Speed/Torque
Control and
Position Control
→ Input N-OT 1CN-43
Reverse Rotation Prohibited
(Reverse Overtravel)
For Speed/Torque
Control and
Position Control
Input terminals for overtravel limit switch.
For linear motion, connect a limit switch to prevent
damage to the machine.
P-OT ON: 1CN-42 is
at low level.
Forward rotation allowed. Normal operation status.
OFF: 1CN-42
is at high level.
Forward rotation prohibited (reverse rotation allowed).
N-OT ON: 1CN-43 is
at low level.
Reverse rotation allowed. Normal operation status.
OFF: 1CN-43
is at high level.
Reverse rotation prohibited (forward rotation allowed).
J Specifying whether Input Signals for Overtravel are to be Used
Use the following parameters (memory switch) to specify whether input signals for over-
travel are to be used.
Cn-01 Bit 2
Use of P-OT Input Signal Factory
Setting: 0
For Speed/Torque Control
and Position Control
Cn-01 Bit 3
Use of N-OT Input Signal Factory
Setting: 0
For Speed/Torque Control
and Position Control
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 rotation at overtravel
(1CN-43) is to be used.
Specifies “1” when external short-circuit wiring is
to be omitted.
3
Reverse
rotation side
Forward
rotation side
SGDB
SERVOPACK Limit switch
SGMj
servomotor
1CN-42
1CN-43
SGDB SERVOPACK
The short-circuit wiring shown in the
figure can be omitted when P-OT and
N-OT are not used.
1CN
-42
-43