Unipulse F805AT-BC, Operation Manual

Page: 66 / 202

6.SETTING AND ADJUSTMENT OF READING
51
6-1-16. Start time, First stability time
When the operation starts, control rate linearly increases up to its initial set value until
the start time expires. Following this, the system enters into idling mode until the first
stability time expires (During idling mode operation, control rate is LOCKed and
weight data are not sampled. Thus, the delay elements of the whole system during these
periods, waiting for the system to stabilize, are not reflected in the later control
outputs). Normal PID control starts when the first stability time expires.
* Start time and First Stability Time do not take effect in FIXED and AUTO
COORDINATE mode.
* PID control takes effect only in CONT.FEED RATE and CONT.TOTAL mode:
LOCK operation is performed in other modes using a fixed control rate.
* If START COORDIN.VALUE is set to zero, the initial control value (Initial value
when the system is turned on) is calculated automatically using AT COORDINATE 1
– 4. If the user desires to offset mechanical variations, he can tune the initial control
value manually.
Operation
0
Target value
Feed rate
Time
PID control starts
Start time First stability time
Input Range: 0 – 99 sec (2 digits, no decimal place)
MODE OPERATION
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START TIME
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MODE OPERATION
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FIRST STABILITY TIME
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