Aerotech BA10 SERIES User Manual page 40

Installation and Operation
ICMDA
P1 - 9
IFDBK
P1 - 12
+/- 10 volts provides
maximum current for
a given phase
ICMDB
P1 - 22
2-18
1 2
JP11
3
23K
1K
1 2
JP13
3
23K
20.0K
20.0K
20.0K
20.0K
Figure 2-12.
Pins 1-18 and 2-17 "Personality module" RCN1 provide gain compensation for phase
"A" regulator circuit. Similar compensation is provided for phase "B" and "C" circuits as
shown in Figure 2-12. The default values for these selectable components (RCN1) are
shown in Figure 2-12.
Connection IFDBK (pin 12 of P1) is provided for monitoring phase "A" current. For DC
brushless motor operation, the signal at this pin would represent motor phase "A" current.
For DC brush motor operation, this signal would represent the current flowing in the
motor armature.
Aerotech, Inc.
BA10/20/30 Series User's Manual
20.0K
20.0K
20.0K
20.0K
20.0K
20.0K
LM348
20.0K
20.0K
LM348
IMPORTANT: The sum of the current signals to phase A
Three-Phase Current Regulator Circuit
RCN1
2 15
0
1 16
RCN1
Phase A
LM348
Voltage Command
RCN1
4 13
0
3 14
RCN1
LM348 Phase B
Voltage Command
6 11
0
5 12
RCN1
LM348 Phase C
Voltage Command
and B together should never exceed the
maximum current rating of a single phase.
Version 1.6