Fuji Electric FRENIC-Ace series, Руководство пользователя

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5.3 Description of Function Codes
5-208
J11 to J13 PID Control (Select warning output, Upper limit of warning (AH) and Lower limit of
warning (AL))
The inverter can output two types of warning signals (caused by process command value or PID error value)
associated with PID control if the digital output signal “PID-ALM” is assigned to any of the programmable, output
terminals with any of E20, E21 and E27 (data = 42).
J11 specifies the warning
output types. J12 and J13 each specify the upper and lower limits for warnings.
■
PID Control (Select warning output) (J11)
J11 specifies one of the following alarms available.
J11 data Alarm Data
0 Warning caused by process
command value
While PV < AL or AH < PV, “PID-ALM” is ON
1 Warning caused by process
command value with hold
Same as above (with Hold)
2 Warning caused by process
command value with latch
Same as above (with Latch)
3 Warning caused by process
command value with hold and
latch
Same as above (with Hold and Latch)
4 Warning caused by PID error
value
While PV < SV - AL or SV + AH < PV, “PID-ALM” is ON.
5 Warning caused by PID error
value with hold
Same as above (with Hold)
6 Warning caused by PID error
value with latch
Same as above (with Latch)
7 Warning caused by PID error
value with hold and latch
Same as above (with Hold and Latch)
Hold: During the power-on sequence, the alarm output is kept OFF (disabled) even when the monitored quantity
is within the alarm range. Once it goes out of the alarm range, and comes into the alarm range again, the
alarm is enabled.
Latch: Once the monitored quantity comes into the alarm range and the alarm is turned ON, the alarm will remain
ON even if it goes out of the alarm range. To release the latch, perform a reset by using the key on
keypad or turning the terminal command RST ON. Resetting can be done by the same way as resetting an
alarm.
■
PID Control (Upper limit of warning (AH)) (J12)
J12 specifies the upper limit of warning (AH) in percentage (%) of the feedback value.
PID control (lower
level alarm (AL))
(J13)
PID control (upper
level alarm (AH))
(J12)
PID feedback value
(PV)
PID command value
(SV)
PID feedback value
(PV)
PID control (lower
level alarm (AL))
(J13)
PID control (upper
level alarm (AH))
(J12)