EasyManua.ls Logo

YASKAWA P7 - B5-10 PI Output Gain Setting; B5-11 PI Reverse Selection; B5-12 PI Feedback Reference Missing Detection Selection; B5-13 PI Feedback Loss Detection Level

YASKAWA P7
256 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
Programming 5 - 18
" b5-10 PI Output Gain Setting
Setting Range: 0.0 to 25.0
Factory Default: 1.0
Applies a multiplier to the output of the PI function. Using the gain can be helpful when the PI function is used to trim the
Speed Command. Increasing b5-10 causes the PI function to have a greater regulating affect on the speed command.
" b5-11 PI Reverse Selection
Parameter b5-11 determines whether reverse operation is allowed while using PI control (b5-010). The factory default setting
will not allow the Drive to run in reverse. This parameter does not need to be changed from factory default for a majority of
HVAC applications. (Refer also to b5-09).
" b5-12 PI Feedback Reference Missing Detection Selection
Loss of feedback can cause problems to a PI application. The Drive can be programmed to turn on a digital output whenever a
loss of feedback occurs. Feedback Loss Detection is turned on by b5-12. When b5-12= “1: Alarm”, the Drive acknowledges
the loss of feedback without stopping or turning on the fault output (MA-MB). If b5-12= “2: Fault”, the Drive coasts to a stop
and turns on the fault output if the feedback is determined to be lost.
" b5-13 PI Feedback Loss Detection Level
Setting Range: 0 to 100%
Factory Default: 0%
" b5-14 PI Feedback Loss Detection Time
Setting Range: 0.0 to 25.0 Seconds
Factory Default: 1.0 Seconds
The Drive interprets feedback loss whenever the feedback signal drops below the value of b5-13 and stays below that level for
at least the time set into b5-14. See Figure below for timing details.
Fig. 17 Loss of PI Feedback Feature
Setting Description
0 0 Limit (factory default)
1 Reverse
Setting Description
0 Disabled (factory default)
1Alarm
2Fault
Measured
Feedbac
k
T
t
Feedback
Loss Output
T
b5-13
T = b5-14
Feedback
Loss Digital Output
ON (CLOSED)
OFF (OPEN)
TIME

Table of Contents

Related product manuals