Star Trac TREADMILL Service Manual page 27

MCB (motor control board) Layout
Designation Description
D10 MOTOR
D12 PWM
D16 I-LIMIT
D18 MTR AC
D24 MTR ENABLE Relay is 'on' (i.e. energized).
D30 SPD SENSR
D31 DOWN
D32
D33 +18 V
D34 V_CON
D38
D40 MTR SHRT
TP1 Test Pin 1
TP2 Test Pin 2
TP3 Test Pin 3
P7 N/A
P8 N/A
AC power is 'on', Motor is hooked up and relay is
energized. This LED will stay lit for a few minutes after
AC voltage is removed or relay turned off.
PWM command / signal is present.
LED should blink once when AC voltage is first applied to
Motor Controller board and should stay off at normal
operation. When I-LIMIT (Over current) condition is hit,
this LED will turn on. The MCB will shut down the drive to
the motor when over current (Fault) condition is
maintained for more than 5 seconds to protect the motor
and MOSFET. This LED will stay on until the treadmill is
reset or STOP button is hit.
AC power is 'on', relay is energized and rectified AC line
voltage is present.
Blinks when speed is detected. Blinking rate or 'on' rate
depends on the speed detected.
Elevation Down command is present.
UP Elevation Up command is present.
Always 'on' when MCB supply voltage is present.
Always 'on' when Console supply voltage is present.
AC Stays 'on' when AC line voltage (110VAC/220VAC) is
present.
Turns 'on' when the motor is SHORTED.
Current sense feedback test-pin for troubleshooting.
Brush sense feedback test-pin for troubleshooting.
Power ground test-pin for troubleshooting.
Activates the relays for troubleshooting.
Bypasses the speed input for troubleshooting.
Message When LED Is On
27