Yaskawa J7 Drive - Manual (Page 43)

5-8
ADJUSTMENT PROCEDURE:
1. With no input, adjust Bias ( n42 setting) until an output of
0.0 Hz is obtained.
2. With full scale input, adjust Gain (
n41
setting) until an output
of 60.0 Hz (or other desired max. output frequency) is obtained.
NOTE: Follow the same adjustment procedure for other desired frequency setpoints.
n41 : Analog Frequency Reference Gain Factory setting: 100 %
Range: 0 to 255 %
Sets the auto-speed frequency command gain,
in increments of 1%.
n42 : Analog Frequency Reference Bias Factory setting: 0 %
Range: -99 to 99 %
10V
FREQ. REF.
INPUT (V)
FREQ.
REF.
(%)
BIAS
(+)
(–)
0V
100%
0%
–100%
BIAS
5.8 FREQUENCY REFERENCE BIAS/GAIN (ANALOG)
For inverse-acting frequency reference
1. Begin with
n41
&
n42
settings as shown below.
2. Fine tune as indicated above.
n41 n42
= 100 0
= 0 99
100%
FREQ
REF.
0%
0V 10V
INPUT VOLTAGE (TERM. FR)
FREQ. REF.
INPUT (V)
FREQ.
REF.
(%)
GAIN
110
100
90
10V
0V
100%
0%
(+)
(–)
GAIN
99%
–99%