Under Voltage Alarm
10 - 60 V

Application

Used to signal when a battery or voltage source is under the specified voltage
There are many signal options: Audible beeping, Red LED, open collector transistor and non-dedicated Form C contacts.

Model: LVA-2

Features

  • Wide Voltage range 10 - 65 V
  • Fused and Transient protected
  • High Reliability
  • Simple User interface
  • Multiple signalling options available.

Basic Operation

Solar Converters Inc. Under Voltage Alarm is a simple alarm circuit that has user adjsutable setpoints and warns the user when the voltage applied to it is under the specified limit. Usually used to signal under voltage of a battery.

The Under Voltage Alarm monitors the incoming voltage that is powering it and it is set up to monitor goes under the setpoint. The alarm ceases when the voltage it is monitoring goes above its setpoint.

Features

  • Single unit 12, 18, 24, 36 and 48 V operation
  • Easy to setup, setpoint have a 1/10 th. scale factor. To set 12 V, set the setpoint to 1.2V

Alarm types


LED:
A red LED on the unit is lit when the LV alarm condition is present.

Audible Beeping:
A 80 dba piezeo alarm withn the unit beeps approx once per 2 seconds to signal a LV alarm condition

Open collector transistor:
(200ma 75 V)

Optional Form C relay (LVA-2C model):
A form C relay contacts (normally open, common, and normally closed) are available to operate and signal alarm response equipment

Electrical Specifications

Nominal Voltage (V) 12 18 24 36 48
Max Output (A)
Basically rating of 1 amp relay		 1 1 1 0.5 0.25
Maximum Voltage (V) 63
Minimum Voltage (V) 10
Self Consumption (ma) 1 1 1 1 1
Quiescent (ma) 3 3 3 3 3
Relay on (ma) 8 8 8 8 8

Standard Delay on action is 0.5s

Mechanical Specifications

Weight:

  • 0.3 lbs. approx.

    • Size:

  • 3" x 2" x 1.5" mounted in small plastic box.

    • Connections


  • Power:
    #22 AWG flying leads Red = +, Black = -
  • Signal:
    # 22 AWG yellow wire for open collecter output.
    This connection is floating open and pulls to Black - (internal GND) on alarm condition
  • Optional Form C relay:
    #22 AWG wire: Orange Common, Purple NO, Blue NC

    • Operating Temperature

    • -40 to 60 deg. C

    Humidity

    • 0 - 90 % non-condensing

    Mechanical Drawing

    Click here for picture

    Note: In the interest of continuous product improvement specifications subject to change without notice.

    Order Model No:

    • LVA-2
    • LVA-2C Additional Form C relay output

    March 2004