Self-Calibration; Estop; Precautions; Processor Board Power Input Requirements - GE T2100 Service Manual

Theory of Operation
Speed Control
The host will send a speed command "SXXX0<CR>" to the processor board, the
firmware in the micro controller will translate this command into a data frame, It will
enable the drive if it is not already enable at this moment, and will send the frame
through its drive serial interface. The drive will interpret the data frame and will
answer with data ACK or NACK depending on the transmission condition. The speed
range is 0 to 13.5 MPH.

Self-Calibration

Press and hold the Calibration push-button (located on the connection panel). Power
up the treadmill and continue to hold the Calibration button until the T2100 Treadmill
starts to elevate.
NOTE:
Hold the Calibration button for at least 4 seconds. May be up to 25 seconds only
for a T2100 processor board that has never been calibrated.

ESTOP

In order to operate the T2100 Treadmill, the ESTOP plug must be attached to its
receptacle on the processor board. Failure to perform this action will initiate a RESET*
sequence on the microcontroller disabling any further power up sequence. Verify
that the ESTOP switch is not activated. Failure to verify this condition will cause the
T2100 Treadmill to not operate.

Precautions

The board must be powered before signals are applied to it.
The circuitry is static sensitive. Therefore, when removing or installing boards, the
power should be Off.

Processor Board Power Input Requirements

Power Supply Input Requirements
Voltage
+5V ISO
+VUNREG
+5V DIG
+24V
66
Test
Nominal
Range
Voltage
+5.1 VDC
+/- 5%
+/- 2%
+11.5 VDC NA
unreg
+5.1 VDC
+/- 5%
+/- 2%
+24 VDC
+/- 5%
+/- 2%
T2100 Treadmill
Max
Ripple
Current
p-p
200 mA 100 mV
500 mA NA
100 mA 100 mV
600 mA 100 mV
Max
Isolated?
Rating
5.5 V Yes
13.0 V Yes
5.5 V No
No
25 V
2021403-120F