Install guide

7
III. Theory of Operations DC1000 (120 VAC)
The DC1000 is a dynamic DC treadmill designed for a wide range of
applications that vary from the medical market to the sports performance
market. This theory of operation encompasses all the electrical components,
their functions, and how the components interact with each other.
The following is a list of independent electrical components found in the
treadmill:
1. 15A Rocker Breaker switch
2. Lower PCB (Motor Controller)
3. Upper (Display) PCB
4. 2.5HP DC motor (with brushes)
5. Elevation system
A. Elevation motor
B. Starter cap
C. Elevation potentiometer--EPOT
D. Omron general purpose limit Switches
6. Hand Grip Heart rate PCB (HG HR)
7. Wireless Heart rate PCB (Polar)
Component Functions
1. 15A Rocker Breaker Switch
The power cord is attached to a rocker style switch combined with a 15
Amp circuit breaker to prevent electrical damage to the electronic
components. If the breaker trips just turn it back on and the breaker
resets. The switch routes power to the lower PCB.
2. Lower PCB (Motor Controller)
A. Provides 120 VAC to the elevation system.
B. Contains relays that function as controllers for the elevation motor.
C. Rectifies the 120 VAC to 12VDC for various control circuits.
D. Provides 12VDC to the upper PCB.
E. Rectifies line voltage to drive the DC motor via (PWM) Pulse Width
Modulation.
F. Senses load on drive motor and compensates by providing torque
and current accordingly.
3. Upper PCB
A. Powers the serial communications (C-safe and CardioKey).
B. Powers the contact heart rate and wireless heart rate jacks.
C. Powers the membrane switch panel.