P.O. Box 1306
Newport Beach
California 92663
Phone: 714-751-0488
Fax: 714-957-1621
E-Mail: [email protected]
www.newmartelecom.com
7.0 Troubleshooting
• Meter Display Errors: In the event the LCD display gets out of sync with the micro-controller and displays incorrect
information, a simple fix is to power cycle the LCD. To power cycle the meter without disconnecting the load: first ensure
the rectifiers are on, slide the breaker to OFF position then slide the meter power to ‘Battery’ then back to ‘Rectifier’. This will
briefly disconnect power to the meter and allow a safe power cycling and clear the display error. Turn on battery breaker.
• LVD Stability Issues After Settings Change: If the LVD contactor cycles frequently after making changes to the LVD
default settings, the ULM-100 can be restored to factory settings to aid in troubleshooting (see 5.26 and the menu diagram
for details).
8.0 Specifications
Electrical
Nominal System Voltage:
12, 24 or 48 VDC
Voltage Range:
8 to 65 vdc
Grounding:
Positive or Negative (polarity insensitive)
Maximum Continuous Current:
100 Amps DC
Battery Breaker:
100 Amps with handle guard
Low Voltage Battery Disconnect:
100 Amp, solid state (FET)
Factory Default:
LVD Set Points
12 Volt
24 Volt
48 Volt
Disconnect
10.4V
21.0V
42.0V
Connect
12.0V
24.5
49.0V
Factory Default LVD Pre-Disconnect Alarm Threshold (Adjustable):
System Voltage
12V
24V
48V
LVD Pre- Disconnect
11.2V
22.8V
45.5V
6
Figure 6: ULM-100 and Power Module
Mechanical
Chassis:
Aluminum with vinyl lamination, black powder
coat front panel
Terminals:
Plated copper. Landings for up to three
rectifier inputs, with separate battery & load
terminals
Rack Size:
19”, 1U
Cooling:
Convection
Dimensions:
1.75” H x 19” W x 11” D
Weight:
6.25 Lbs.
Environmental
Operating Temperature range:
0 to +60°C
* Fuse Hot near
battery on long
cable runs