IMO Jaguar CUB, Instruction Manual

Page: 95 / 170

5-23
The relations stated above are indicated in the following expressions.
(1) If analogue input
d
bias reference point:
(F18) Bias = (%) 1 Setting Frequency
(2) If analogue input > bias reference point:
(%) 1 Setting Frequency
input log Ana
int) po reference Bias ( int) po reference Gain (
) Bias ( ) Gain (
u
int) po reference Bias ( int) po reference Gain (
int) po reference Bias ( ) Gain ( int) po reference Gain ( ) Bias (
u u
C50 C34
C50 C32 C34 F18
input Analog
C50 C34
F18 C32
u u
u
In the above expressions, each function code expresses its data.
Example: Setting the bias, gain and its reference point when analogue input range
from +1 to +5 VDC is selected for frequency command 1
(Point A)
If the analogue input is at 1 V, the set frequency is 0 Hz. Therefore, the bias is 0%
(F18 = 0). Since 1 V is the bias reference point and it is equal to 10% of 10 V, then
the bias reference point should be 10% (C50 = 10).
(Point B)
If the analogue input is at 5 V, the set frequency comes to be the maximum value.
Therefore, the gain is 100% (C32 = 100). Since 5 V is the gain reference point and it
is equal to 50% of 10 V, then the gain reference point should be 50% (C34 = 50).
When using the function codes for setting a gain or bias alone without
changing any reference points, the setting procedure for the function
codes is the same as that of IMO's conventional inverter models.
F20 to F22
DC Braking (Starting frequency, Braking level, and Braking time)
These function codes enable the DC braking to prevent the motor from coasting due
to its inertia while it is decelerating to a stop. Set function codes F20 for the starting
frequency, F21 for the braking level, and F22 for the braking time.