SBS AT10.1 SERIES, Operating And Service Instructions

Page: 51 / 104

SERVICING THE AT10.1
45
3.2. INTERPRETING FRONT PANEL ERROR MESSAGES
If the AT10.1 control circuitry detects hardware or wiring problems, it
may display an error code on the front panel meter. Certain non-error
status codes are also displayed. To solve an error code problem, refer to
the table below, which lists the codes and procedures to use.
!
WARNING
High voltages appear at several points inside the AT10.1. Use extreme
caution when working inside the enclosure. Do not attempt to work
inside the AT10.1 unless you are a qualified technician or electrician.
Disconnect and lock out all power from the AT10.1 before starting to
remove or replace any components. Turn the ac power off at the
distribution panel upstream from the charger. Disconnect the battery
from the AT10.1 output terminals TB1(+/-).
Error
Code
Meaning Repair Procedure
E 01
resistor R2
open or
defective
The Rating Resistor (R2) is installed at the back of the front panel in the
Gate Driver PC Board (A11) input connector (J18). R2 is measured by the
control circuitry on startup, and is used to determine some of the AT10.1
model-specific parameters, such as the float voltage.
If the AT10.1 detects that R2 is defective (or improper), it must be
replaced. See Section 3.6 for parts ordering information. When you have
completed the repair, restart the AT10.1 according to Section 2.1.
E 02 short circuit
on dc output
The AT10.1 may display this error code if the battery is discharged to less
than 6 Volts. When the battery re-charges to greater than 6 Volts, the
error code will disappear. If you have a seriously discharged battery, allow
the AT10.1 to run for 24 hours and check the battery voltage again. If it
has not increased to the normal voltage rating, consult the battery
manufacturer for help.
If the battery voltage is normal, check the wiring at the AT10.1 dc output
terminals (TB1+/-) for a short circuit.
If the battery voltage is normal, and all external wiring is satisfactory,
check the AT10.1 dc breaker (CB2). If it is tripped, try
once to reset it. If it
trips again immediately, there may be an internal short circuit in the
AT10.1. Check the internal wiring. If the AT10.1 is filtered, check the dc
filter capacitors (C1/C2) and the polarity diode (CR1).
The AT10.1 normally recovers automatically from an E 02 condition. If
you have shut down the AT10.1 for service, restart per Section 2.1.
E 03
High DC
Voltage
Shutdown
activated
To restart the AT10.1, turn the ac breaker off, then on. Check the
Equalize voltage and High DC Voltage alarm settings. The HVDC alarm
setting must be higher than the Equalize voltage setting.
If you get another High DC Voltage shutdown after a few minutes of
operation, there may be an internal component failure. See
AT10.1
output voltage too high, or not controllable of the troubleshooting chart
on page 52 in Section 3.4.