Fuji Electric FRENIC-HVAC User Manual page 528

To use "External PID control 1 ON command" to "External PID control 3 ON command,"
you need to assign the terminal command EPID1-ON to EPID3-ON to any of the
general-purpose digital input terminals, respectively. ( E01 to E07)
External PID control 1: "External PID control 1 ON command" EPID1-ON (data = 201)
External PID control 2: "External PID control 2 ON command" EPID2-ON (data = 211)
External PID control 3: "External PID control 3 ON command" EPID3-ON (data = 221)
External PID process control block diagram
External PID control 1
Multi-
frequency
command
Filter
Addition,
Subtraction,
Average,
Maximum
selection,
Minimum
selection
External PID control 2
Multi-
frequency
command
Feedback
Filter
Selection
Multi-
External PID control 3 frequency
command
Feedback
Selection
Filter
Command value (SV), Feedback value (PV)
Analog input [12], [C1] and [V2]
Option card [32] and [C2]
• If data 11, 12, 31, 32 are set, during inverter deceleration the PID control is put on
hold (I item hold). PID control is put on hold only during decelerating to stop
when the run command is OFF. PID control is not put on hold when decelerating
to stop if the set frequency is changed.
PID 1 alarm
PID 1 alarm
processor
Hold PID integral component
PID 1 PV failure
PID 1 error output
judgment
Deviation
Maximum
selection,
Minimum
selection
Feedback
value External PID 2
Unit/scale
Hold PID integral component
Reset PID integral and
differential components
Normal/inverse
operation EPID2-IVS
PID 2
PID 2
alarm
alarm
processor
PID 2 PV
PID 2
failure
error output
judgment
External PID 3
Unit/scale
Hold PID integral component
Reset PID integral and
differential components
Normal/inverse
operation EPID3-IVS
PID 3
PID 3
alarm
alarm
processor
PID 3 PV
PID 3
failure
error output
judgment
Anti reset windup
Select
speed
command
Reset PID integral
External PID 1
and differential
components
Unit/scale
Normal/inverse operation
EPID1-IVS
PID
process-
Invert
sor
P (Gain)
Output conver-
I (Integral
gent value
time)
ON/OFF hysteresis D (Differ-
width
ential time)
Anti reset windup
Select
speed
command
PID
process-
Invert
sor
P (Gain)
Output conver-
I (Integral
gent value
time)
ON/OFF hysteresis
D (Differ-
width
ential time)
Select
speed
command
PID
process-
Invert
sor
P (Gain)
Output conver-
I (Integral
gent value
time)
ON/OFF hysteresis
D (Differ-
width
ential time)
6-218
Red: External PID control 1
Blue: External PID control 2
Black: External PID control 3
External PID control 1
Cancel PID
command E-PID1 ON
control
%/EPID1
External PID
control (Mode
selection)
Upper limit of PID
process output
PID 1 process
DO → Y terminal
AO → FM1, FM2
Lower limit of PID
Option card
process output
AO → AO+, CS+
External PID control 2
command EPID2-ON
Cancel PID
control
External PID
%/EPID2
control (Mode
selection)
Upper limit of PID
process output
PID 2 process
DO → Y terminal
Lower limit of PID
AO → FM1, FM2
process output
Option card
AO → AO+, CS+
External PID control 3
command E-PID3 ON
Cancel PID
control
External PID
%/EPID3
control (Mode
selection)
Upper limit of
PID process
output
PID 3 process
DO → Y terminal
Lower limit of PID
AO → FM1, FM2
process output
Option card
AO → AO+, CS+
Inverter running
RUN
External
output
Inverter running
RUN
External
output
Inverter running
RUN
External
output