IAI America REXT - Manual (Page 238)


Part 1 Specification
Chapter 4 Controller Unit
214
Part 1 Specification
4.4.4 Parameters Relating to External Interface
z Position complete Signal Output Mode (No. 39, PEND)
This parameter defines the status of the position complete signal when the servo is turned OFF or a “position deviation” occurs
while the actuator is stopped after position complete.
The parameter considers the following two conditions:
[1] The actuator position has deviated beyond the specified value of “positioning band” due to an external force applied when
the servo was ON.
[2] The actuator position has deviated beyond the specified value of “positioning band” due to an external force applied when
the servo was OFF.
This is to provide flexibility as to how the “position complete status” should be monitored according to the characteristics of the
equipment or configuration of the PLC’s sequence circuit.
In particular, it is recommended that this parameter be set to “1 [INP]” if the actuator is operated like an air cylinder and you
want to use the position complete signal as an auto switch.
The ON/OFF status of the position complete signal varies as follows depending on the setting of parameter No. 39.
Setting value of
parameter No. 39
Description
0 [PEND] [1] When the servo is ON
The position complete signal will remain ON even after the current position exits the range of the
“positioning band” set for the target position.
[2] When the servo is OFF
The position complete signal is always OFF unconditionally, regardless of the current position.
1 [INP] Regardless of whether the servo is ON or OFF, the position complete signal is ON when the current
position is inside the range of the “positioning band” set for the target position, and OFF when the
current position is outside the range.
This parameter functions like an auto switch for an air cylinder.
The factory setting is “0 [PEND].”
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