Appendix d block diagrams d-4 – Rockwell Automation 1391 USER MNL/DIGITAL AC SERVO DR User Manual
Page 130
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
INTEGRA
T
O
R
PWM
GENERA
T
O
R
TRIANGLE
OSCILLA
T
O
R
TP15
TP16
TP20
TP2
TP19
TP7
MICRO–
PROCESSOR
80C196KB
PSD301
RAM, EPROM
I BET
A
COMMAND
TB1
TB1
TB1
TB1
TB1
TB1
TB1
7
6
4
3
5
2
1
RESOL
VER
EXCIT
A
TION
13
14
TB2
TB2
TB2
TB2
9
10
+23 V
TB2
TB2
11
12
+12 V
MEMOR
Y
BOARD
DRIVE ENABLE
+5 V
FAUL
T
OUTPUT
FAUL
T
INPUT
MICRO F
AUL
T
RESET
FAUL
T
SIGNALS
PWM C
PWM A
PWM B
TP10
TP8
TP9
CURRENT
FEEDBACK
COMMAND
VELOCITY
COMMAND
T
ORQUE
ANALOG OUT
#1
ANALOG OUT
#2
R1
R2
ROT
OR SHIELD
S1
S3
S2
S4
S1, S3 SHIELD
S2, S4 SHIELD
OVERALL
SHIELD
RESET
COMMON
ENABLE SOURCE
ENABLE INPUT
VELOCITY
MODE SELECT
T
ORQUE
MODE SELECT
+5 V
DRIVE ST
A
TUS
DROK
TB4
17
18
TB4
DROK
CONT
ACT
(5 V = FULL
SCALE)
BUFFERED VELOCITY
COMMAND
BUFFERED T
ORQUE COMMAND
(5 V = FULL
SCALE)
(5 V = FULL
SCALE)
COMMAND
TP21
EXTERNAL
CURRENT
LIMIT
TP29
TP30
I A
FDBK, I B FDBK
2.5 V PEAK = RA
TED
MOT
OR CURRENT
I ALPHA
REF
, I BET
A
REF
2.5 V PEAK COMMAND= RA
TED MOT
OR
CURRENT
RESOL
VER AMPLITUDE
8.00 KHZ SINE W
A
VE
3.00 VRMS
115 V
AC, 1A
TRIANGLE
2.5 KHZ
5.5 VDC PEAK
DEF
AUL
T
=
TACH
OUTPUT
1.2 VDC PER 1000 RPM
DEF
AUL
T
=
T
ORQUE
COMMAND
3.0 VDC = RA
TED
MOT
OR
CURRENT
DA
TA
AND
ADDRESS
BUS
EXTERNAL
CURRENT
LIMIT
DISPLA
Y
BOARD
IT
SCALING
CURRENT
FEEDBACK
TP1
1
TP12
TP13
TP14
+5V
COM
+12V
–12V
BRIDGE
ENABLE