Fuji Electric FRENIC-AQUA series, User Manual

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6.3 Details of Function Codes
6-299
Chap. 6
FUNCTION C
ODES
J527
J529
J530
J531
External PID Control 1 (Feedback error detection mode)
(Feedback error upper-limit)
(Feedback error lower-limit)
(Feedback error detection time)
J627 (External PID Control 2 (Feedback error detection mode)
J629 (External PID Control 2 (Feedback error upper-limit)
J630 (External PID Control 2 (Feedback error lower-limit)
J631 (External PID Control 2 (Feedback error detection time)
J677 (External PID Control 3 (Feedback error detection mode)
J679 (External PID Control 3 (Feedback error upper-limit)
J680 (External PID Control 3 (Feedback error lower-limit)
J681 (External PID Control 3 (Feedback error detection time)
Under external PID control, the inverter can detect abnormal feedback values (PV).
In the case of external PID control 1, if the error level of a PV signal (Upper limit: J529,
Lower limit: J53) is kept for the feedback error detection time (J531), the inverter regards it as
an error, then stops or continues running according to the mode specified by J527.
The table below lists the function codes available for external PID control 1, 2 and 3.
Feedback error
detection mode Feedback error
upper limit Feedback error
lower limit Error detection
time
External PID
control 1
J527 J529 J530 J531
External PID
control 2
J627 J629 J630 J631
External PID
control 3
J677 J679 J680 J681
„ External PID control 1 to 3 (Feedback error detection mode) (J527, J627, J677)
J527/J627/J677 specifies the error processing to be performed if a feedback error occurs.
- Data setting range: 0 to 2
Data for
J527/J627/J677
Error processing
0 Disable: Turn ON the following output signal and continue to run.
EPV1-OFF for external PID control 1
EPV2-OFF for external PID control 2
EPV3-OFF for external PID control 3
1 Enable: Coast to a stop (PVA trip)
2 Enable: Decelerate to a stop and cause a PVA trip.
Feedback errors can be monitored from the external equipment by assigning the digital output
signal
EPV1-OFF , EPV2-OFF or EPV3-OFF to any of the output terminals [Y1] to [Y4],
[Y5A/C], and [30A/B/C] with any of E20 through E24 and E27.
- External PID control 1: EPV1-OFF (E20 to E24 and E27, data = 215)
- External PID control 2: EPV2-OFF (E20 to E24 and E27, data = 225)
- External PID control 3: EPV3-OFF (E20 to E24 and E27, data = 235)