Horizon Fitness RST 5.6 Service Manual page 23

Ref# Wire Color
1 Black
2 Brown
3 Red
4 Orange
5 Yellow
6 Green
7 Blue
8 Purple
9 Grey
10 White
11 Pink
12 Light Blue
R S T5. 6 & R CT 7 . 6 S e a r s S e r v i c e M a n u a l 2 0 0 7
C o n s o l e C a b le V o lt a g e C h a r t ( D C V o l t s)
Function Voltage / Ohm Readings
Incline VCC +2.5 vdc constant
Incline Pot +2.5 vdc at 0.0% incline, +0.5 vdc at max incline
Voltage changes with each change in incline
Incline GND n/a ground
Digital GND n/a ground
Digital GND n/a ground
RPM When speed sensor aligned to magnet: short, 0.0 vdc
When sensor not aligned: open, +5.0vdc
Power Voltage(to UCB) +15 vdc constant Range = +15.0 to +17.0 vdc
Power Voltage(to UCB) +15 vdc constant Range = +15.0 to +17.0 vdc
Speed Command 0.0 vdc before started, +0.5 vdc at 0.5 mph, +4 vdc
(PWM) at 10 mph. Voltage changes as speed changes
Drive Motor Relay +4.3 vdc before started
0.0 vdc after started
Incline Down 0.0 vdc before started, 0.0 vdc while inclining, +1.9
vdc while declining. Voltage constant while inclining/
declining
Incline Up 0.0 vdc before started, +1.9 vdc while inclining, 0.0
vdc while declining. Voltage constant while inclining/
declining
B1: Incline VCC
B2: Incline Pot
B3: Incline GND
B4: Digital GND
B5: Digital GND
B6: RPM
B7: Power Voltage (to UCB)
B8: Power Voltage (to UCB)
B9: Speed Command (PWM)
B10: Drive Motor Relay
B11: Incline Down
B12: Incline Up
rst 5.6 & rct 7.6 service manual 2007_rev1.0 | 23