Other Functions; Servo-Ready Check Function; Servo End Check Function - Mitsubishi FX3U-20SSC-H User Manual

FX -20SSC-H Positioning Block User's Manual
3U
4. Cautions
• The operation speed can not change in the following statuses.
- During deceleration by STOP command
- During automatic deceleration in position control
• If the target position change value (address) converted in units of pulses is out of the setting range, an
error occurs.
• If the target position change value (speed) is out of the setting range, the operation speed is handled to "1"
(lower limit) or maximum speed (upper limit).
7.6

Other functions

The 20SSC-H has an absolute position detection system, torque limit function, servo ON/OFF and servo
check functions and others.
The parameter setting and sequence program enable each function.
7.6.1

Servo-ready check function

The servomotor ready signal (completion of preparation) is checked during startup of operation or during
operation. With no servo ready signal, a servo-ready error occurs, stopping the operation.
For servomotors with no servo-ready signal, disable the servo-ready check function.
7.6.2

Servo end check function

Use the servo end check function to detect the positioning operation completion by the servo status
in-position signal.
When the servo status in-position signal turns ON after operation completion (within the range of servo end
check determination time) the 20SSC-H detects that the positioning operation has ended.
When the in-position signal does not turn ON within the specified servo end determination time, an external
error occurs, stopping the operation.
• Zero or smaller settings are handled as "1ms."
• 5001 or larger settings are handled as "5000ms."
1. To use the servo end check function
Specify the following settings.
Setting item
Servo end check
Servo end determination time
→ For related parameters, control data and monitor data, refer to Section 7.9
→ For related parameters, control data and monitor data, refer to Section 7.8
Enable the servo end check.
Specify the value within in the range 1 and 5000ms.
7 Before Starting Positioning Operation
Description
7.6 Other functions
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