Wheel System - Traction
130
Service Manual – SC1500
Specifications
Shop Measurements
The following table lists measurements taken from one SC1500. While these are not “specifications”, they
can help you recognize abnormal vs. normal conditions.
Note that the black voltmeter lead is on B- unless otherwise indicated.
E1 Curtis 1210 Speed Controller – Low Current
Pin
Color
Description
Ref.
Measurements
1
-
2
-
3
YEL
POT High
B-
4.96v
4
GRA
POT Wiper
B-
4.96v Go Switch Pressed
0.004v not pressed
5
BRN
KSI
B-
24.03v (all “interlock” switches closed)
6
RED/WHT
Brake -
B-
22.2v off (brake applied)
0.1v on (brake released)
7
-
8
-
9
ORN/BLU
Status
B-
Unstable voltage when there is a code. If
unplugged, 23v from A1 control board.
10
-
11
-
12
RED/YEL
Inhibit
B-
0v no direction request
23.2v FWD or REV requested
23.9v unplugged (v source is A1 control board)
13
VIO
POT Low
B-
0.03v
14
ORN
Brake +
B-
23.9v (out to brake solenoid)
15
-
16
BLU/BLK
Rev. Alarm
B-
0v no direction request or forward request
23.1v reverse direction request
23v unplugged (v source is A1 control board)
17
RED/BRN
Reverse
B-
22.7 Reverse Requested
0.002v Forward requested or no direction
22.7v unplugged (v source is A1 control board)
18
GRN/ORN
Speed Limit
B-
0.028v minimum
4.96v maximum