Biases And Gains Of Speed Setting Terminals (Pr. 902 To Pr. 905, Pr. 917 To Pr. 920) - Mitsubishi Electric FR-V520-1.5K to 55K Instruction Manual

Biases and gains of speed setting termi-
nals (Pr. 902 to Pr. 905, Pr. 917 to Pr. 920)
4.7 Biases and gains of speed setting term inals
(Pr. 902 to Pr. 905, Pr. 917 to Pr. 920)
Adjust the biases and gains of the speed setting No. 2, torque command No. 3 and multi-function No. 1
terminals.
The "bias" and "gain" functions are designed to adjust the relationship between the 0 to 10V input signal,
which is externally input for the setting of output speed, torque or magnetic flux.
Parameter Name
902 Speed setting No. 2 bias
903 Speed setting No. 2 gain
Torque command No. 3
904
bias
Torque command No. 3
905
gain
No. 1 terminal bias
917
(speed)
No. 1 terminal gain
918
(speed)
No. 1 terminal bias
919
(torque/magnetic flux)
No. 1 terminal gain
920
(torque/magnetic flux)
Factory setting
(1500r/min)
Bias
Pr. 902
0
Setting signal
CAUTION
Torque command bias and gain can not be set by applying an external negative setting signal to the
torque command No. 3 or No. 1 terminal.
<Setting>
There are the following three methods to adjust the speed setting voltage bias and gain.
1) Method to adjust any point by application of a voltage to across terminals 2(1)(3) - 5
2) Method to adjust any point without application of a voltage to across terminals 2(1)(3) - 5
3) Method that does not adjust the bias voltage
(Example) Pr. 903 "speed setting No. 2 gain"
(Pr. 902 to Pr. 920 can be adjusted in the similar manner.)
<Adjustment procedure> Using the speed setting signal from the operation panel (FR-DU04
(1) Power on (monitoring mode)
FR-DU04
CONTROL PANEL
-1
Hz/r
A
V
MON EXT PU
REV FWD
REMARKS
ON of the LED is indicated by
Factory Setting
0V 0r/min
10V 1500r/min
0V 0%
10V 150%
0V 0r/min
10V 1500r/min
0V 0%
10V 150%
(1500r/min)
Gain Pr. 903
-10V
10V
(2) Choose the PU operation mode.
1)
j
, and OFF by .
47
Setting Range
0 to 10V 0 to 3600r/min
0 to 10V 0 to 3600r/min
0 to 10V 0 to 400%
0 to 10V 0 to 400%
0 to 10V 0 to 3600r/min
0 to 10V 0 to 3600r/min
0 to 10V 0 to 400%
0 to 10V 0 to 400%
(150%)
Bias
Pr. 904
Pr. 917
Setting signal
Inclination is as set in
Pr. 904 (Pr. 917, Pr. 919)
and Pr. 905 (Pr. 918, Pr. 920).
Make sure that the inverter is in the PU operation
mode. (LED of PU is lit.) (Refer to page 28 for mon-
itor transition.)
Operation mode (PU operation mode)
FR-DU04
-1 CONTROL PANEL
Hz/r
A
V
MON EXT PU
REV FWD
Remarks
Extended mode
Gain
Pr. 905
Pr. 919
Pr. 918
Pr. 920
10V
) to make speed setting
-1