IAI ERC3, Instruction Manual

Page: 133 / 188

Chapter 3 Operation
3.6 I/O Signal Controls and Function
125
(12) + Jog (JOG+) PLC Output Signal
- Jog (JOG-) PLC Output Signal
This signal is the command for the jog operation startup or inching operation startup.
If a + command is issued, the actuator will operate in the direction opposite home. When a
- command is issued, the actuator will operate in the direction of home.
1) Jog operation
Jog operation can be performed when the jog/inch switching (JISL) signal is OFF.
While the “JOG+” is turned “ON”, the movement direction is to the opposite of the home and
when it is turned “OFF”, the actuator is decelerated and stopped.
While the “JOG-” is “ON”, the actuator will operate in the direction of home and when it is turned
“OFF”, it is decelerated to a stop.
The operation is performed based on the set values.
 The speed is based on the parameter value ON/OFF specified using the Jog Speed/Inching
Distance Change-Over (JVEL) signal.
If the JVEL signal is OFF, the actuator operates according to parameter No.26, “PIO jog
speed” of ERC3.
If the JVEL signal is ON, the actuator operates according to parameter No.47, “PIO jog speed
2” of ERC3.

The acceleration/deceleration conforms to the rate acceleration/deceleration (the specific
value varies depending on the actuator).
 When both the JOG+ and JOG- signals are turned “ON”, the actuator is decelerated and
stopped.
2) Inching (movement for certain amount) operation
The inching operation is available while the JISL signal is turned “ON”.
Once it is turned “ON”, the actuator is moved as much as the inching distance.
When the JOG+ is turned “ON”, the movement is to the opposite of the home and when the
JOG- is turned “ON”, the movement is to the home.
The operation is performed based on the set values.

The speed conforms to the value of the parameter ON/OFF specified by the JVEL signal.
If the JVEL signal is OFF, the actuator operates according to parameter No.26, “PIO jog
speed” of ERC3.
If the JVEL signal is ON, the actuator operates according to parameter No.47, “PIO jog speed
2” of ERC3.
 The travel conforms to the value of the parameter ON/OFF specified by the JVEL signal.
If the JVEL signal is OFF, the actuator operates according to parameter No.48, “PIO inch
distance” of ERC3.
If the JVEL signal is ON, the actuator operates according to parameter No.49, “PIO inch
distance 2” of ERC3.

The acceleration/deceleration conforms to the rated acceleration/deceleration (the specific
value varies depending on the actuator).
During the normal operation, even when the “+” Jog Signal or “-” Jog Signal is turned “ON”, the
normal operation is continued. (The Jog signal is ignored.)
In the pause condition, even when the “+” Jog Signal or “-” Jog Signal is turned “ON”, the
actuator is not moved.
(Note) Because the software stroke limit is disabled before the homing operation, the actuator
might run against the mechanism end. Take the greatest care.
ME0302-4A