V/F Control Block - Fuji Electric FRENIC-HVAC User Manual

7.4 V/f Control Block

FWD REV
"0"
Frequency
command
x
"-1"
Select ACC/DEC
time (4 steps)
RT2/RT1
ACC time ACC time 1
S08 F07
S09
F08
DEC time DEC time 1
ACC time 2 E10
DEC time 2 E11
E12
ACC time 3
E13
DEC time 3
E14 Overload
ACC time 4
prevention
DEC time 4 E15
control
Automatic
deceleration
Calculated
torque
Limit level
Edc (DC link bus voltage)
Limit level
Automatic deceleration
H69
(Mode selection)
Select torque limiter level 2/1
TL2/TL1
Torque limiter 1 (Driving) F40
Torque limiter 2 (Driving) E16
Calculated
torque
F41
Torque limiter 1 (Braking)
Torque limiter 2 (Braking) E17
Continuity of
running (P)
H92
(I)
H93
+
Restart mode after
momentary power failure H15
(Continuous running level)
-
Edc (DC link bus voltage)
Restart mode after
F14
momentary power failure
(Mode selection)
Restart mode after
H14
momentary power failure
(Frequency fall rate)
+
F44
Current limiter (Level)
Output current
Current limiter
F43
(Mode selection)
Rotational
direction limitation
H08
Forward
rotation
inhibited
ACC/DEC processor
Reverse
rotation
inhibited
H07
Acceleration/deceleration pattern
H70=0.00
Overload prevention
Deceleration
Frequency
rate
processor
processor
H70
H70≠0.00
Operation
analyzer
Torque limiter for braking
(Frequency increment limit)
H76
+
Automatic
deceleration
-
control block
+
Automatic
deceleration
control block
-
Run decision
Torque limit control
+
-
Torque limit
adjuster
-
+
Run decision
Decelerate-to-stop/continue to run
at momentary power failure
Edc controller
Run decision
Current limit control
Current limiter
-
Run decision
Figure 7.3 (1) V/f Control Block
7-5
F03 Maximum frequency 1
F04 Base frequency 1
Starting frequency 1
F23
(Holding time)
F24
F25 Stop frequency
H11
Deceleration
mode
H56
Deceleration time
for forced stop
H63
Low limiter
(Mode selection)
H69=0
H70=0,999
H70≠0.00
H69
=2 to 5
Automatic
deceleration
H69 (Mode selection)
=2,4
=3,5
Torque limiter for braking
(Frequency increment limit)
H76
Drive control selection 1
Rated slip
P12
frequency
Slip compensation
response time

7.4 V/f Control Block

Monitor output
< Output torque >
Calculated
torque
(One-way deflection)
Monitor output
< Output frequency 1
(before slip compensation) >
F14≠2,3
(One-way
F43=0
deflection)
+
1
+
F43≠0
Enable/Disable
F42 operation
analyzer
P10