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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)
To check Load MCB fail, connect a load, but with no load turned on. Then switch the breaker to
its off position and turn on some load (any amount will do). This will cause the alarm to occur as
the load side to the circuit will be taken to system common voltage. Turn off the load, and then
return the breaker to its on position.
Load MCB Fail (urgent)
Tests with Batteries
•
Turn off Battery Breaker/s
•
Connect battery/batteries
•
Check the correct Battery Capacity (Ahrs) has been entered (EM4x Web UI Battery>Battery
Settings). This is the total capacity, so for example 100Ahr strings in parallel, this should be
200.
•
Go to EM4x Web UI Battery>Battery Settings>Battery Charge Current Limit. Check Battery
Charge Current Limit (BCL) is set to desired level (usually 0.25C
a single 100Ahr battery, the BCL will be 25A, or if two 100Ahr batteries are connected in
parallel, the BCL will be 50A.
•
Connect load (but turn off).
•
Check V
is set to 54.0V. (Web UI Control>Float Voltage)
f
•
Turn on Battery Breaker/s
Check Battery current is positive if charging
Battery Current Limit (BCL)
Check that the battery recharge current is limited to the Battery Current Limit level
(usually 0.25C
, (25%)). See Web UI Battery Settings>Calculated Charge Current
10
Limit for Amp value.
Note: as the BCL is based on fine voltage control of the system bus, the BCL make take one or
two minutes to "settle", i.e., you may observe a brief excursion of the battery recharge current
beyond the BCL setting
BCL functions
Newmar • 1580 Sunflower Ave, Suite 100, Costa Mesa, CA 92626
Phone: 714-751-0488 • E-mail: techservice@Newmarpower.com
52.8V
47.0V
Urgent/Non-Urgent
Urgent/Non-Urgent
# of Modules:
, (25%)). This means that for
10
23
V
/
V
/
A
/
°C
/
°C
/
°C
/
°C
/
/
/
/
/
%
/
%
/
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