Quick Start User Guide
t-Boss 7400 ACDC Track Driver
Genesis Technologies Inc.
www.genesisusa.com
Page 4
DC Battery LED indicator thresholds and their display states are defined in the following table:
Notes:
1. When the DCV is greater than the DC high-voltage threshold or is less than the DC low-voltage threshold, the
t-Boss 7400 ACDC Track Driver will shut-down.
2. V is approximate.
3. Input DC voltage should never exceed 17.5VDC for more than 1 second.
4. LED Indicator switch threshold accuracy is ±3%.
5. ↗ = DCV is increasing in value.
6. ↙ = DCV is decreasing in value.
T1
THROUGH
T4 TRACK STATUS I
NDICATORS
Four LED indicators each capable of displaying either GREEN or RED are provided for each of the four
t-Boss 7400 track driver outputs. The Track Output Status indicators show the status of each track
circuit and can be used to aid in troubleshooting problems with the track driver or the track circuit.
The TRACK STATUS Indicators show the status of each of the t-Boss 7400 track outputs and its respec-
tive track circuit. LED indications are:
Ÿ
ON GREEN continuously - NORMAL - NOT SHUNTED. Normal operation with track circuit not
shunted.
Ÿ
FLASHING GREEN slowly - SHUNTED. Track circuit is shunted. Occurs when circuit is occupied by a
train, but also may occur if ring-10 diode is shorted, gage rod is shorting track circuit, etc.
Ÿ
STROBED GREEN
1
- HIGH-RESISTANCE CIRCUIT - Track circuit is open or current output substantially
reduced. May be caused by an open ring-10 diode, a broken or high-resistance bond, a broken rail,
a disconnected track wire or adjustments made to track circuit resistors. Although the track circuit
may appear to operate properly, the cause of such a condition should be discovered and corrected.
See the section ”Selecting and Adjusting Track Limit and Relay Resistors” (
) for information
about the selection and adjustment of track and relay resistors.
Ÿ
OFF - OPEN CIRCUIT. Track circuit is open and output current is near zero. May be caused by output
not being connected or unused. It also could be caused by an open ring-10 diode, a broken or high-
resistance bond, a broken rail, or an open track wire.
DC Input Range or
DCV Change
DC BATT / FAULT LED
T1 - T4 Outputs
After Change
Before Change
After Change
< 7.50V
Note 2
OFF
OFF
OFF
↗8.00V
Note 2
OFF
STROBED
OFF
↗9.5V
STROBED
FLASH
ON
↗10.5V
FLASH
ON
ON
↗ 15.0V
ON
FLASH
ON
↗16.0V
FLASH
STROBED
OFF
> 16.0V
Note 1
STROBED
STROBED
OFF
↙ 15.5V
STROBED
FLASH
ON
↙ 14.5V
FLASH
ON
ON
↙ 10.0V
ON
FLASH
ON
↙ 8.5V
FLASH
STROBED
OFF
↙ 7.50V
Note 2
STROBED
OFF
OFF
< 7.50V
Note 2
OFF
OFF
OFF
