© 2001 Xantrex Technology Inc. 19
P/N 973-0012-01-02 Rev. A 05/01
Setting Parameters (continued)
CHARGED Indicator Setup
(continued)
Trigger on Voltage and Amperage
When this mode is selected, the CHARGED indicator LED illuminates
when the voltage reaches the programmed level (Step A) and the amperage
decreases to the value set in Step B.
As batteries charge, their voltage slowly increases and the charging
current decreases. Setting these parameters allows the CHARGED indicator
LED to illuminate when specified conditions are met. However, if a suffi-
ciently high amperage is being drawn from DC loads during charging, the
meter detects this current, and it prevents the TM500A from illuminating the
CHARGED indicator LED. To set the meter to illuminate the CHARGED LED, the
amperage trigger level must be increased to account for the additional
DC loads.
NOTE: The batteries may not be fully charged if DC loads are in the
system and the current level is increased.
To determine the appropriate fully charged amperage for the system,
divide the battery bank amp-hour capacity by 20. For example; if the battery
bank’s amp-hour rating equals 880 amp hours, divide this value by 20 for an
amperage setting of 44 amps.
Step A Setting the Fully-Charged Voltage Level
1A. Press the SELECT button until the Voltage LED (
V
) is illuminated.
2A. Press the SELECT and RESET buttons simulataniously until the LED
display flashes.
3A. Press the RESET button to change the displayed voltage to the
desired fully charged voltage level:
• For a 12 VDC system, set this voltage between 14.3–14.9 volts for
lead-acid batteries.
• For a 24 VDC system, set this voltage between 28.6–29.6 volts for
lead-acid batteries.
• For a 48 VDC system, set this voltage between 57.2–59.2 volts for
lead-acid batteries.
Refer to the battery manufacturer’s recommendation for other types
of batteries.
4A. Press the SELECT button to accept the new value. The selection
range is between 10 to 64.9 VDC.
3.0 CONFIGURATION
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