URA 400-01

The Dual Battery System is intended for automatic turning ON/OFF of the additional battery to the car electrical system. Due to independent operation of the batteries the additional battery may be used for additional devices charging, such as: radio, freeze, lighting, winch, etc. This prevents the main battery from discharging and provides safe engine start.
URA 400 is a powerful bistable relay with control unit.
Control unit indicates batteries voltage level and controls relay operation.
Manual adjustment is available for: relay threshold level installation, choice of indication mode, choice of operation mode.
The additional battery is turned ON/OFF automatically according to diagram (pict.2) depending on the settings (Uon>Uoff or Uon<Uoff).
For manual turning ON press “On” button. Manual turning ON may be useful for connection of powerful devices (such as winches, additional lighting, etc.) or for the engine start at cold weather.
Application is universal for 12V cars and ships.
The set includes: control unit and bistable relay together with insulation units, connective cables and fuse holders with 2A fuse.

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Description

Operation manual

1.Installation and connection

1.1. Disconnect ground cable from the battery!
1.2. Fasten the device on the car frame near the battery.
1.3. Choose convenient place for installation and visual control of control unit.
1.4. Perforate 52mm opening and fix control unit case in it using screw.
1.5. Make connection according to the scheme (Pict.1), use cable with cross-section not less than 25mm².

Pict.1

Pict.2

2. Settings

5 configurations are preset:

1.       “Uon”- ON voltage
2.       “UoF”- OFF voltage
3.       “ind”- indication mode
“on”- indicators are ON when the relay is ON
“On”- indicator(s) are always ON
“OFF”- indicator(s) are always OFF
4.       “2bt”- 2^nd battery operation mode
“On”- the additional battery turns ON depending on the voltage or manually
“OFF”- the additional battery never turns ON, its indicator is not lighting
5.       “ion” – indication of the relay operation (blinking dot in the right digit)
“On”- turned ON
“OFF”- turned OFF

To enter setup configuration press “M”
[OM] - turning indicators ON for 5 seconds (if they are not turned ON)

[OM] - operating mode
[SM] - setup mode
[CV] - current value
>>> - hold on for more than 2 seconds
>, ˅ - short press
▬ - release
- change by “circle”

Absence of pressing within 10 seconds - the settings are saved and the device returns to the operating mode.

Note: the device is working at Uon ≠Uoff

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