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Voltage thresholds can either be checked using an external power supply, or by
adjusting the EM4x float voltage 0.1V above (or below for the low voltage
alarms). It is recommended to have the batteries disconnected.
1.
Adjust the supply/float voltage to 55.7V & observe the "High Float"
alarm. 2. Adjust the supply/float voltage to 57.7V & observe the "High Load"
3. Adjust the supply/float voltage to 52.7V & observe the "Low Float" alarm.
4. Adjust the supply/float voltage to 46.9V & observe the "Low Load" alarm.
High Load Volts (urgent)
High Float Volts (non-urgent)
Low Float Volts (non-urgent)
Low Load Volts (urgent)
Depending on the test load available, it may be necessary to adjust the High Load
Current alarm threshold down to suit. For example, with 40A test load, adjust the
Load Current High Setpoint threshold (Web UI page Alarm Configuration>System
Alarms) to 35A. Then simply apply the 40A load and observe the alarm change
state.
Once the test is complete, be sure to rest the Load Current High Setpoint to its
previous value (or check with the customer for the correct value they require).
Load Current High Setpoint
Temperature alarm tests are performed by heating up (using a heat gun or other
source) and cooling down (using an aerosol can of freeze, or a tub of ice) the
temperature sensors.
Battery Temperature High (urgent)
Battery Temperature Low (non-urgent)
Room Temperature High (non-urgent)
Room Temperature Low (non-urgent)
When an AC Monitoring PCB is not fitted at system level (as in most cases), the
AC Fail alarm is generated from the rectifiers. The rectifiers sense if AC is
present, and extend an AC fail alarm to the EM4x. Therefore, to test this alarm,
simply turn off the rectifier AC breakers. To allow the controller to continue to
read alarms there must be DC present on the output of the system.
As this causes the rectifier output to cease, a Rectifier Fail alarm is also generated.
To generate the Urgent Rectifier Fail, turn off the required number to make this
occur (usually set to 2, but check via the EM4x Web UI for the setting (Control
page>Rectifier Urgent Fail Threshold).
AC Fail (urgent)
Rectifier Fail (non-urgent)
Urgent Rectifier Fail (urgent)
NewMar Power System Manual
Model: COMMANDER II AND COMMANDER II+
alarm.
57.6V
55.6V
52.8V
47.0V
__________ V
/
__________ V
/
__________ V
/
__________ V
/
__________ A
/
__________°C
/
__________°C
/
__________°C
/
__________°C
/
Urgent
/
Non-urgent
/
No. Modules:____
/
M-CMDRII 063022
Page 27 of 43
Version 1.0
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