Precision Control Systems 1029C - Manual (Page 19)

MODEL 1029C 15 10/19/2007
ADJUSTMENTS (Continued)
X
X
X
X
Installed
for power
feedback
only
Run Span Pot.
Run Zero Pot.
Idle Span Pot.
Idle Zero Pot.
THESE FOUR POTS, AND
THE CURRENT LIMIT POT
ARE MOUNTED ON THE
BACK SIDE OF THE BOARD
TO SHOW THROUGH LID
P2 FeedbackSelector . See Figure 18
DO NOT CHANGE ADJUSTMENTS
ON POTS MARKED WITH AN ‘X’
DO NOT CHANGE ADJUSTMENTS
ON POTS MARKED WITH AN ‘X’
Current Limit Pot. (shows through lid.)
Over Current Trip
SUMMING JUNCTION
EXTERNAL F.B.
CURRENT F.B.
VOLTAGE F.B
POWER F.B.
Figure 18. P2 Details
FEEDBACK SELECTION
Figure 17. 1029C circuit board showing adjustment locations.
CW
W
RUN (+)
COM(-) CCW
IDLE (+) W
SHOR
TED
SCR REL
AY
OVER
CURREN
T
REL
AY
FB. BK. COMMON
RESE
T
RUN/IDLE
+5V I. METER V. METER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
COMMON
EXTERNAL FEEDBACK
INPUT CONNECTIONS
0-100mA or 0-5 V
Figure 19. External feedback connections.