USER MNL/DIGITAL AC SERVO DR Manual
Appendix D
Block Diagrams
D-4
Figure E.2
1391-DES Logic Control Board Block Diagram
1
2
3
15
16
17
14 BIT A/D
12 BIT D/A
12 BIT D/A
5
4
6
7
TB2
TB2
TB2
TB2
TB2
TB2
TB2
TB2
TB2
TB2
POSITION
DECODER
10
9
8
TB1
TB1
TB1
I ALPHA
COMMAND
OMEGA E
DECODING
DECODING
CURRENT FEEDBACK
SCALING
CURRENT
INTEGRATOR
PWM
GENERATOR
TRIANGLE
OSCILLATOR
TP15
TP16
TP20
TP2
TP19
TP7
MICRO–
PROCESSOR
80C196KB
PSD301
RAM, EPROM
I BETA
COMMAND
TB1
TB1
TB1
TB1
TB1
TB1
TB1
7
6
4
3
5
2
1
RESOLVER
EXCITATION
13
14
TB2
TB2
TB2
TB2
9
10
+23 V
TB2
TB2
11
12
+12 V
MEMORY
BOARD
DRIVE ENABLE
+5 V
FAULT OUTPUT
FAULT INPUT
MICRO FAULT RESET
FAULT
SIGNALS
PWM C
PWM A
PWM B
TP10
TP8
TP9
CURRENT
FEEDBACK
COMMAND
VELOCITY
COMMAND
TORQUE
ANALOG OUT #1
ANALOG OUT #2
R1
R2
ROTOR SHIELD
S1
S3
S2
S4
S1, S3 SHIELD
S2, S4 SHIELD
OVERALL SHIELD
RESET
COMMON
ENABLE SOURCE
ENABLE INPUT
VELOCITY
MODE SELECT
TORQUE
MODE SELECT
+5 V
DRIVE STATUS
DROK
TB4
17
18
TB4
DROK
CONTACT
(5 V = FULL SCALE)
BUFFERED VELOCITY COMMAND
BUFFERED TORQUE COMMAND
(5 V = FULL SCALE)
(5 V = FULL SCALE)
COMMAND
TP21
EXTERNAL CURRENT LIMIT
TP29TP30
I A FDBK, I B FDBK
2.5 V PEAK = RATED
MOTOR CURRENT
I ALPHA REF, I BETA REF
2.5 V PEAK COMMAND= RATED MOTOR CURRENT
RESOLVER AMPLITUDE
8.00 KHZ SINE WAVE
3.00 VRMS
115 VAC, 1A
TRIANGLE
2.5 KHZ
5.5 VDC PEAK
DEFAULT = TACH OUTPUT
1.2 VDC PER 1000 RPM
DEFAULT = TORQUE COMMAND
3.0 VDC = RATED MOTOR CURRENT
DATA AND ADDRESS BUS
EXTERNAL
CURRENT
LIMIT
DISPLAY
BOARD
IT SCALING
CURRENT
FEEDBACK
TP11 TP12 TP13 TP14
+5V COM +12V –12V
BRIDGE
ENABLE