Fuji Electric FRENIC-MEGA, Instruction Manual

Page: 229 / 358

5-110
F codes
E codes
C codes
P codes
H codes
A codes
b codes
r codes
J codes
d codes
U codes
y codes
Ch
ap
. 5
FUNCTION C
O
DES
„ Offset (C31, C36, C41) Data setting range: -5.0 to +5.0 (%)
C31, C36 or C41 configures an offset for an analog voltage/current input. The offset also applies to signals sent from the
external equipment.
„ Filter time constant (C33, C38, C43) Data setting range: 0.00 to 5.00 (s)
C33, C38 or C43 configures a filter time constant for an analog voltage/current input. The larger the time constant, the
slower the response. Specify the proper filter time constant taking into account the response speed of the machine (load). If
the input voltage fluctuates due to line noises, increase the time constant.
„ Polarity (C35, C45)
C35 and C45 configure the input range for analog input voltage.
Data for C35 and C45 Specifications for terminal inputs
0 -10 to +10 V
1 0 to +10 V (A minus component of the input will be regarded as 0 VDC.)
„ Gain
To input bipolar analog voltage (0 to ± 10 VDC) to terminals [12] and [V2], set C35 and C45 data to "0." Setting
C35 and C45 data to "1" enables the voltage range from 0 to +10 VDC and interprets the negative polarity input
from 0 to -10 VDC as 0 V.
C50 Bias (Frequency command 1) (Bias base point)
(Refer to F01.)
C51, C52 Bias (PID command 1) (Bias value and Bias base point)
These function codes (and the gain-related function codes) specify the gain and bias of the analog PID command 1, enabling
it to define arbitrary relationship between the analog input and PID commands.
The actual setting is the same as that of F18. For details, refer to F18 given in the description of F01.
Gain-related function codes C32, C34, C37, C39, C42, and C44 are shared by frequency commands.
„ Bias value (C51) Data setting range: -100.00 to 100.00 (%)
„ Bias base point (C52) Data setting range: 0.00 to 100.00 (%)
C53 Selection of Normal/Inverse Operation (Frequency command 1)
(Refer to E01 to E07.)