IAI PCON-CB series, Instruction Manual

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Chapter 6 Power-saving Function
POWER CON
PCON-CB/LC
166
6.2 Automatic Current Reduction Feature
This feature reduces the current at stop gradually when the actuator is able to keep staying at
the same stop position (condition with no deviation) after stopping for positioning. In case the
actuator has moved, the current at stop increases gradually until the stop condition gets
retained.
In case the actuator is able to keep staying at the same stop position, the current at stop is
reduced thus it leads to power saving.
Feature Flow
1) Stop completely after moving to target position (This feature will not start working until
there is no position deviation.)
2) Current at stop gets fluctuated depending on if there is position deviation or not.
Position Deviation = 0: Current at stop decreases by certain amount
Position Deviation
≠
0: Current at stop increases by certain amount
Fluctuation of current at stop is implemented in the following range.
(Lower Limit) Setting value
*1
for each actuator
↔
(Upper Limit) Parameter value
*2
*1 It is approximately 15% of the rated current as a reference.
*2 Current limit value at positioning stop
This feature can be set valid/invalid in Parameter No. 182 “Automatic Current Reduction
Feature”.
Enable=1, Disable=0
Caution: This feature is available to use regardless of the encoder resolution, however, for
the high-resolution battery-less absolute encoder, the current at stop may remain
at the maximum because of detection of slight position deviation and may not be
able to obtain the effect.