Specification
057-230 ISSUE: 1
Page 16 of 100
2.8.3
CHARGE FAIL INPUT
Minimum Voltage
0 V
Maximum Voltage
35 V (plant supply)
Resolution
0.2 V
Accuracy
±1 % of max measured voltage
Excitation
Active circuit constant power output
Output Power
2.5 W nominal at 12 V and 24 V
Current At 12V
210 mA
Current At 24V
105 mA
The charge fail input is actually a combined input and output. Whenever the generator is required to
run, the terminal provides excitation current to the charge alternator field winding.
When the charge alternator is correctly charging the battery, the voltage of the terminal is close to the
plant battery supply voltage. In a failed charge situation, the voltage of this terminal is pulled down to a
low voltage. It is this drop in voltage that triggers the
Charge Failure
alarm. The level at which this
operates and whether this triggers a warning or shutdown alarm is configurable using the DSE
Configuration Suite Software.
