Kinco CD620 - Page 81

81
Example 7-7: Analog – torque mode (without setting the dead zone voltage
and offset voltage)
Requirement: DIN1 is used for enabling the driver, DIN2 is used for error resetting, and DIN3 controls the
operation modes of the driver (the mode is “4” when no signal is inputted, and is “3” when signal is inputted).
The motor Kt is 0.48 Nm/A, and the peak current of drivers is 15 A. The analog input voltage -10 V
corresponds to -0.64 Nm, and 10 V corresponds to 0.64 Nm. Select analog channel 2 (AIN1) to control the
torque.
Fig. 7-15 Schematic diagram of Example 7-7
Calculate
filter
U
according to the offset voltage and dead zone voltage that require settings:
2047
10 10
filter
shift dead
U
v v U U


(In this example,
0
dead
U 
, and
0
shift
U 
)
Result:
filter
U
=2047
Calculate
demand
I
according to the required torque
demand
T
:
*2
demand
demand
t
T
I
K

Result:
demand
I
=1.89
Calculate
Factor
according to
filter
U
and
demand
I
:
*2048*4096
*
demand
filter
I
Factor
U Ipeak
