True Fitness TREADMILL 2011 Service Manual page 42

LED
AC
VDSP
LED1
LED2
LED3
LED4
LED5
DN
UP
+VCON
PWM
SPEED
AC LED
VDSP LED
DN LED
UP LED
+VCON LED
PWM LED
SPEED LED
Proprietary & Confidential Proprietary & Confidential
TRUE Fitness Technology, Inc. TRUE Fitness Technology, Inc.
APPENDIX A: LED DESCRIPTION
DESCRIPTION
HIGH VOLTAGE PRESENT INDICATOR
HOT SIDE POWER SUPPLY PRESENT INDICATOR
AUXILIARY STATUS LED
AUXILIARY STATUS LED
AUXILIARY STATUS LED
AUXILIARY STATUS LED
AUXILIARY STATUS LED/DIGITAL TO ANALOG OUTPUT
DOWN ELEVATION SIGNAL PRESENT
UP ELEVATION SIGNAL PRESENT
UPPER CONSOLE POWER SUPPLY INDICATOR
PWM SIGNAL FROM CONSOLE INDICATOR
SPEED PICKUP INDICATOR
Turns on when AC power is applied and relay (K1) is closed. The motor controller
may turn off the safety relay (K1) if a faulty is detected at power up. K1 relay is
also controller from the upper console. CAUTION: The AC LED will stay on for a
few minutes after the AC power is removed. This is because high voltage DC
power is still present on board. Do not touch or remove board when this LED is
illuminated.
Turns on when the power supply to the motor controller is present. CAUTION:
This is a floating ground (hot) and isolated from the chassis ground. Do not hook
this ground reference to the chassis ground.
This LED indicates an elevation down command is present on the controller.
This LED indicates an elevation up command is present on the controller.
This LED is illuminated when the power supply to the upper console is available
to the controller.
This LED is illuminated when PWM signal from the upper console is present on
the controller. The LED will increase in intensity as the PWM duty cycle
increases. At high duty cycles, the LED would appear to be "on" all the time.
This LED turns off each time the encoder wheel passes/is interrupted through
speed pickup.
Tread Service Manual - July 2011
42