Fuji Electric FRENIC-HVAC User Manual page 511

J127 PID Control 1 (Feedback failure detection (Mode selection))
J128
J129
J130
J131
PID control 1, 2: Abnormal feedback values (PV values) can be detected. When PV signals'
abnormal level (upper limit: J129, J229 / lower limit: J130, J230) is continued for the set time
(J131, J231), failure is recognized.
If Mode selection (J127, J227) is 3 through 6, when failure has been detected, the speed is
reduced followed by stop of the operation, based on the Mode selection (J127, J227), after the
failure continuation duration value (J128, J228) elapses. If the PV value is returned to the
normal range (upper limit: J129, J229 / lower limit: J130, J230) during operations for failure
continuation duration, PID control is restored.
 PID control 1, 2 (feedback failure detection Mode selection) (J127, J227)
Select an operation to be performed after failure is detected.
Physical values that can be set depend on display unit and scale.
- Data setting range: 0 to 6
Data for Data for
J127 J227
0
1
2
3
4
5
6 --
 Operations regarding PID1, 2 feedback failure "PV1-OFF" and "PV2-OFF" can be
monitored from external equipment, using Y1 to Y4, Y5A/C, or 30A/B/C. Set function
codes E20 to E24 or E27 data to 202, 204.
(Feedback failure continuation duration)
(Feedback failure upper-limit)
(Feedback failure lower-limit)
(Feedback failure detection time)
J227 (PID control 2 (Feedback failure detection (Mode selection)))
J228 (PID control 2 (Feedback failure continuation duration))
J229 (PID control 2 (Feedback failure upper-limit))
J230 (PID control 2 (Feedback failure lower-limit))
J231 (PID control 2 (Feedback failure detection time))
J128, J228
Disable: Turns ON digital output signals (PV1-OFF) and
0 Disable
1 Disable Enable: Free run stop (PV1, PV2 trip)
Enable: Deceleration and stop (PV1, PV2 trip)
2 Disable
Enable: Continuation of operation at the maximum
3 Enable
Enable: Continuation of operation at the minimum
4 Enable
Enable: Continuation of operation at the frequency used
5 Enable
Enable: Shift to PID control 2 (PID control 1 is restored
Enable
6-201
6.3 Details of Function Codes
Operation description
(PV2-OFF) and continues operation.
*After deceleration and stop, PV1, PV2 trip
frequency (upper limit frequency)
frequency (lower limit frequency)
when failure is detected.
when failure is recovered from.)
In this case, even if (PID2/1) is not allocated, even
if (PID2/1) is OFF, transitions to PID control 2.
However, in the case of J201 =0 (disable), operates
as J127 = 1.