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Servo Motor Operation
3-Phase Brushless Motor Operation
For 3-phase brushless motor operation,
The AMP-20545 is a trapezoidally commutating amplifier. Hall sensors are required to be connected to the proper
inputs in sequence with the correct motor phases for motion to be produced. It is important to verify the hall
sensors and motor phases are in the right combination as the first step to setting up the amplifier.
Brushed Motor Operation
For brushed motor operation, set
Setting Amplifier Gain and Current Loop Gain
The
AG
command will set the amplifier gain (Amps/Volt). The
AG Command:
The AMP-20545 has 3 amplifier gain settings. The gain is set with the
AGm=n, where m is a specific axis. The axis must be in a motor off (MO) state prior to execution of the
AU Command:
Proper configuration of the
sets the gain for the current loop on the amplifier. Table A3.5 indicates the recommended
and 48 VDC power supplies based on motor inductance. The axis must be in a motor off (MO) state prior to
execution of the
command.
AU
Vsupply VDC
24
24
24
24
48
48
48
48
A3 – AMP-20545/20525 ▫ 164
must be set to 1 for the axis.
MT
MT
and
BR
to 1 for the axis.
AG setting
n = 0
n = 1
n = 2
Table A3.4: Amplifier Gain Settings
command is essential to optimize the operation of the AMP-20545. This command
AU
Inductance L (mH)
n
0.5 < L ≤ 5
0
0.2 ≤ L < 0.5
0.5
5 < L
1
5 < L
1.5
0.5 < L ≤ 10
0
0.2 ≤ L < 0.5
0.5
10 < L
1
10 < L
1.5
Table A3.5: Amplifier Current Loop Gain Settings
AU
command will set the current loop gain.
command as shown in Table A3.4 for
AG
Gain Value
0.4 A/V
0.7 A/V
1.0 A/V
Description
Inverter mode, Normal current loop gain
Chopper mode, Normal current loop gain
Inverter mode, Higher current loop gain
Chopper mode, Higher current loop gain
Inverter mode, Normal current loop gain
Chopper mode, Normal current loop gain
Inverter mode, Higher current loop gain
Chopper mode, Higher current loop gain
command.
AG
settings for 24
AUm=n
DMC-21x5 User Manual 1.0a1
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