RKC INSTRUMENT Z-TIO-G, Инструкция по эксплуатации

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9. COMMUNICATION DATA DESCRIPTION
IMS01T28-E4
9-56
Continued from the previous page.
Function:
 Hold action
When hold action is ON, the Event action is suppressed at start-up or STOP to RUN until the Measured
value (PV) has entered the non-event range.
[With hold action] [Without hold action]
ON ON
Event status
Time
Deviation
Hold action area
Measured value (PV)
Measured value (PV)
Event set value
Set value (SV)
OFF
Time
Deviation
Measured value (PV)
Event set value
Set value (SV)
ON
Event status
OFF
Measured value (PV)
 Re-hold action
When re-hold action is ON, the Event action is also suppressed at the control set value change until the
Measured value (PV) has entered the non-event range.
Action condition
1: Hold action ON
(Only hold action)
2: Re-hold action ON
(Hold and re-hold actions)
When the power is turned on Hold action Hold action
When transferred from STOP (control STOP) to
RUN (control RUN) Hold action Hold action
When the Set value (SV) is changed Without hold and
re-hold actions
Re-hold action
The re-hold action is invalid for any of the following. However, the hold action is valid.

When Setting change rate limiter other than “0 (Unused)” are set.

When Remote/Local transfer is the remote mode.
Example: When Event 1 type is the deviation low
When re-hold action is OFF and event output type is deviation, the event output is produced due to the
set value change. The re-hold action suppresses the alarm output until the Measured value (PV) has
entered the non-event range again.
Event area
Measured value (PV)
Before the change
of set value
The change of set value
Set value Event set value
Event area
After the change
of set value
Measured value (PV)
Set value Event set value