Vsupply VDC
Inductance L (mH)
m =
24
-
0
24
L < 1
1
24
1 < L < 2.3
2
24
2.3 < L < 4.2
3
24
4.2 < L
4
48
-
0
48
L < 2.4
1
48
2.4 < L < 4.2
2
48
4.2 < L < 7
3
48
7 < L
4
Table A4.24: Amplifier Current Loop Gain Settings
Setting Peak and Continuous Current (TL and TK)
To set TL and TK for a particular motor, find the continuous current and peak current ratings for that motor and
divide that number by the amplifier gain. For example, a particular motor has a continuous current rating of 2.0 A
and peak current rating of 5.0 A. With an AG setting of 1, the amplifier gain of the AMP-43540 is 0.8A/V
TL setting = (2.0A) / (0.8A/V) = 2.5V (TL n=2.5)
TK setting = (5.0A) / (0.8A/V) = 7.5V (TK n=6.25)
Brushed Motor Operation
The AMP-43540 can be setup to run brushed motors by setting the BR command to 1 for a particular axis. Wire the
motor power leads to phases A and C on the motor power connector. Do not set BA, BM or use the BX command
for any axis that is driving a brushed motor.
A4 – AMP-435x0 (-D3540,-D3520) ▫ 232
DMC-40x0 User Manual
Figure A4.2: Peak Current Operation