P.O. Box 1306
Newport Beach
California 92663
Phone: 714-751-0488
Fax: 714-957-1621
E-Mail: [email protected]
www.newmartelecom.com
5.11
Manual/Auto selector switch: The LVD selector switch sets the way the LVD circuit functions.
• Manual connect - Battery always online
• Automatic - LVD function enabled (factory default)
• Manual disconnect - Battery always offline
5.12
LVD Adjustment: The ULM-100 offers easy adjustment of both dis-connect and re-connect LVD settings without the
need for an external, adjustable power supply. These thresholds can be selected from the SETTINGS page using the menu
knob, the default factory setting for the particular item is also displayed. A press on the menu knob will save the settings
and is retained even after powering down the unit. LVD threshold adjustment can be made while the system is operating.
5.13
LVD Alarms: Pre-disconnect & disconnect - Two external alarms can be triggered by the ULM-100: the Pre-disconnect
(‘PRELVD’) and the LVD dis-connect (‘LVDDISCON’). The LVD Pre-disconnect alarm is a warning to an impending battery
disconnect. It is triggered by an adjustable voltage thresholds set above the LVD dis-connect threshold and below the
re-connect threshold. The LVD dis-connect alarm is automatically set using the LVD dis-connect threshold (see 5.12). Both
alarms will trigger the LED Alarm light.
5.14 Voltage Level Mapping - 12 VDC example shown
12.5v NORMAL VOLTAGE
12.3v LVD RE-CONNECT
(ADJUSTABLE)
11.6v PRE-LVD ALARM
(ADJUSTABLE)
11.0v LVD DIS-CONNECT
(ADJUSTABLE)
Normal Voltage -
Typical system voltage with rectifiers supplying load(s), batteries not deeply discharged.
LVD Re-Connect -
Level at which the battery will be re-connected after a dis-connect event when AC power is restored.
Pre-LVD Alarm -
Level at which the pre-LVD alarm contact triggers as an early warning for a low battery disconnect. (See
Specification Section 8.0 for factory default.)
LVD Dis-Connect -
Minimum allowable battery voltage level has been reached and will disconnect battery to prevent
damage. Will also trigger LVD alarm. (See Specification Section 8.0 for factory default.)
5.2
Meter
Figure 4: LCD Home Screen
5.21
The home screen shows DC voltage, DC current and Ambient temperature in degrees Celsius. The display always
returns to the home screen after 30 seconds of inactivity. A push of the menu button will display the alarm screen and
rotating the knob will send it to adjacent display pages.
5.22
Plant Current Monitoring: The total current being produced by the rectifier(s) connected is displayed on the main
screen. This includes current drawn by the load and battery charging current.
5.23
Back Lighting: The ULM-100 allows the user to adjust LCD backlight level to match environment lighting or suit user
preferences. Changes can be made in the settings menu and is adjustable from 20% to 100% levels.
5.24
Temperature Monitoring: Ambient temperature is displayed on the home screen in Celsius and on the temperature
screen in both Fahrenheit and Celsius. The sensor is located on the front panel next to the alarm LED.
5.25
Meter Power Source Selector: The LCD meter can be powered from the rectifier side or the battery side by using the
selector switch. Powering the meter from the rectifier side(default) causes the ULM-100 to completely shutdown during a
Low battery voltage disconnect thus reducing battery drain. Powering from the battery side will allow the LCD meter to
continue operating even with a an LVD disconnect event.
4