Specifications

INSTALLING THE SD17063
ADVANCED MICRO CONTROLS INC.
5
42
Step 6: Testing the System
At this point, the physical installation should be complete. Testing the system includes an initial test to verify
wiring, and short procedures to set Current Loop Gain, Output Waveform, and Anti-Resonance settings.
Initial Test
You may what to uncouple the motor from its load while running the initial test.
1) Verify that the rubber boots are in place on the motor and power connectors of the SD17063.
2) Apply 120 Vac power to the drive. The Power LED should be on and the other three LED’s should be
off. If any of these three LED’s are on there is a fault. Refer to the Fault Table on page 15 for
information on the type of fault and its probable causes.
3) If there are not faults, have your indexer make a slow move in the counter-clockwise direction for one
turn. While the turn is in progress, the STEP LED should blink. Verify that the motor rotated in the
correct direction for one complete turn. If you are using an optical encoder or other position
feedback, verify that the indexer or controller is reading it properly.
4) Repeat step 3 with a move in the clockwise direction. Again verify that the motor rotated in the
correct direction for one complete turn.
5) If you are using the Disable or Reset Inputs, verify their operation with the motor stopped. Note that
the motor will have no holding torque while either of these inputs are active and the motor’s shaft will
be free to rotate. If you are using the Fault Output, verify that it is Off while either of the inputs is
active, and On when both inputs are off.
If your system fails any of these tests, refer to Appendix C, TROUBLESHOOTING, starting on page 54, for
suggestions on possible causes for the problems.
When you are finished with the initial test, remember to couple the load and motor if you uncoupled them
before the test.
Determining Current Loop Gain
Current loop gain refers to the gain of the amplifier that controls the current through the motor when the
motor’s speed is at or below 3 rps. Its default setting of TYPICAL is designed to work with motors whose
inductance value is above 2.5 mH. You should use the default setting for all AMCI motors except for the
SM42 when it is parallel connected to the SD17063. Non-AMCI motors that are series connected should also
use the default setting. If you are parallel connecting a non-AMCI motor to the SD17063, then calculate the
motor’s small signal inductance. If the inductance is greater than 2.5 mH then the default TYPICAL setting
should work with your motor. If the calculated inductance value is between 1 and 2.5 mH, the default setting
will still work, but you may benefit by reducing the current loop gain. Motors with inductances below 1 mH
may not work properly with the SD17063.
The procedure for setting the Current Loop Gain is as follows. Note that the REDUCED 1 setting for the cur-
rent loop gain has given the best results on the test bench at AMCI for a parallel connected SM42.
1) Make sure you have documented the switch setting for your SD17063 because you will change them
during this procedure. You can use the SD17063 Worksheet found on page 17.
2) Remove power from the SD17063
3) Set the switches on the SD17063 to the values given in figure 5.11. The Pulse Train Input, Anti-
Resonance, Anti-Resonance Phase, Current Control, and Motor Current setting have no effect and
should be left at settings you have determined for your system.
Figure 5.11 Initial Setting of Determining Current Loop Gain
12345
SB2
O
N
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SB3
O
N
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SB4
O
N
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SB1
O
N
Initial Current Loop Gain Settings
= Don't Care. Leave at its Present Setting