Hitachi SJ Series, User Manual

Page: 271 / 786

12-10-16
Chapter 12 Inverter Functions
PID start abnormal judgment
• It is a function to detect breakage of pipes such as
water leakage.
• Abnormality will be judged when PID-FB value is
lower than [AH-82] PID start abnormality judgment
level after the elapse of [AH-80] soft-start time
following PID soft-start.
Parameter
• Abnormal operations vary depending on the setting
of [AH-81] PID start abnormality judgment
implementation selection at the time of abnormality
judgment.
- Nothing will be done when [AH-81] is 00.
- When [AH-81] is 01, it will trip with [E120] PID
start abnormality error after the abnormal status
elapsed the set time for [AH-80].
- When [AH-81] is 02, the [SSE] terminal will be
turned ON after the abnormal status elapsed the
set time of [AH-80].
The [SSE] terminal will stay ON until it stops.
Item Parameter Data Description
PID start abnormal
judgment implement
selection
[AH-81]
00 Disable
01
Enable It will trip with [E120] PID start
abnormality error when start
abnormality is judged.
02
Enable The [SSE] terminal will be
turned ON when start abnormality is
judged.
PID start abnormality
judgment level
[AH-82] 0.00~100.00(%) Is a level to judge start abnormality.
A
ON
Soft-start time [AH-80]
PID operation
Soft-start target level
[AH-76]
Acceleration according to [AH-78]
Output
Frequency
Time
PID start abnormality
judgment level [AH-82]
OK
NG
Feedback value
Abnormality occurrence