Samlex BGW400 Battery Guard Waterproof Owner’s Manual

: July 2, 2024
: SAMLEX

Table of Contents

Samlex BGW400 Battery Guard Waterproof
Product Usage Instructions
Frequently Asked Questions
DESCRIPTION
INSTALLATION
OPERATION
CONFIGURE/PROGRAMMING
PROGRAMMING TABLE
TECHNICAL DATA
WIRING DIAGRAM
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Samlex BGW400 Battery Guard Waterproof

Samlex-BGW400-Battery-Guard-Waterproof-product

Specifications:

Product: Battery Guard Waterproof BGW400
Input Voltage: 12V or 24V
Protection Features: Undervoltage, Overvoltage, Overcurrent
LED Status Indication

Product Usage Instructions

Operation:

The BGW400 provides protection against undervoltage, overvoltage, and overcurrent situations. The user can configure the input voltage protection values as per their requirements.

Undervoltage:

If the input voltage drops below the undervoltage threshold for 15 seconds, the BGW will trigger an alarm output and shut down after one minute. It will turn back on when the voltage exceeds the reset threshold for 5 seconds.

Overvoltage:

The BGW will shut down if the input voltage exceeds the overvoltage threshold for 0.5 seconds. The alarm output and LED will indicate this condition with a flashing pattern.

Overcurrent Protection:

The BGW monitors the current flow and will shut down if an excessive current persists for too long. It will automatically restart after 1 minute.

LED Functionality:

The LED serves to indicate the status of the BGW and can be used for programming purposes. Different blinking patterns indicate various states of the device.

Programming:

The user can program different threshold and reset values for undervoltage and overvoltage settings using the provided programming table. The programmed positions are retained even when the battery is disconnected.

Frequently Asked Questions

Q: How can I set the undervoltage and overvoltage thresholds on the BGW400?
- A: Refer to the programming table in the manual to set the desired threshold and reset values for undervoltage and overvoltage protection.
Q: What happens if there is an overcurrent situation?
- A: The BGW400 will shut down to prevent damage to itself and\ connected equipment. It will restart automatically after 1 minute.
Q: How does the LED indicate different states of the BGW400?
- A: The LED has specific blinking patterns to indicate whether the device is active, disabled, or facing undervoltage/overvoltage \issues. Refer to the LED STATUS section in the manual for detailed explanations.

DESCRIPTION

The Battery Guard Waterproof BGW400 (hereafter referred to as the BGW) is an intelligent, user programmable, fully waterproof battery guard. The BGW has additional options for a remote off switch and an alarm output for connecting a buzzer, LED strip or relay. To ensure low losses, the BGW is provided with two threaded rod and nut connections; input+ and output+. The other connections (Minus-, Remote Off-, Config-input and Status/alarm output) are connected via 6.3 mm faston connectors. The BGW is equipped with a bright status LED displaying the different functional stages. The BGW features an “automatic board system detection”, this enables to automatically detect if the BGW is connected to a 12 V or a 24 V system.

INSTALLATION

Install the BGW on a cooling (metal) surface allowing\ to dissipate the heat generated. Use a maximum cable length of 50 cm between the battery and the BGW will ensure accurate monitoring the battery voltage.

Please note!

The product may only be installed by qualified electricians who are fully aware of the requirements for working with high battery voltages.
The use of poor/ bad connection material and/or wires that are too thin can damage the BGW.
A short circuit between the battery’s positive and negative terminals can cause serious damage to the system.
Always use fuses of the correct value.
Use a 1.5 mm2 cable with 5A fuse for the BGW400 from the battery (-) to the BGW for the negative (–) connection. Use this connection only for the BGW!
In case of high inductive loads, always use a suppressor diode from OUT+ to min (–). Position it as close as possible to the load.

OPERATION

Input voltage protection The input voltage protection values (undervoltage threshold, undervoltage reset, overvoltage threshold and overvoltage reset) can be set by the user. Please see “CONFIGURE/Programming” how to set these values.

Undervoltage

If the BGW’s input voltage drops below the undervoltage threshold for 15 seconds, the status/ alarm output will turn on. The LED will also indicate undervoltage. The BGW will shut down one minute later and the alarm output and LED will turn off. When the BGW’s input voltage exceeds the reset threshold for 5 seconds, the BGW will turn back on, and the LED will indicate that the BGW is active again.

Overvoltage

The BGW will shut down if the input voltage exceeds the overvoltage threshold for 0.5 seconds. The status/alarm output and LED will flash/switch with a frequency of 1 Hz.

Overcurrent protection

The current through the BGW is constantly monitored. If an excessive current flows through the BGW for too long, the BGW will shut down to prevent damage\ to both the BGW and the connected equipment. The BGW will turn on again after 1 minute.

Temperature protection

The BGW will shut down immediately if its temperature exceeds 85 °C. The LED will indicate a fault. The BGW will turn on again after 1 minute if the temperature has dropped below 75 °C.

Ground Loss protection

The BGW will shut down if it detects that the minus (–) is disconnected on the supply (battery) side. The LED will indicate a fault. The BGW will turn on again after 1 minute.

Remote off

A switch can be installed between the OFF input and the minus (–) to manually disable the BGW output. The BGW will shut down immediately when the connection is made. The BGW will turn on when the connection has been disconnected.

LED

The LED has two functions. One is to indicate the BGW’s status. The different stages are explaned in the LED STATUS below. The other is to configure/ programme the BGW. This operation is described in the section “CONFIGURE/Programming”.

CONFIGURE/PROGRAMMING

To enter the configure/programming mode, a connection has be made between the CONFIG input and the Minus (–). The LED will blink one time when the connection has been made for approx. 2 seconds. Once this is done, the connection has to be disconnected. The same connection can be made briefly (short) again to set the correct position from the programming table. The LED will light up as feedback. At that point, program position #1 is selected. The user can briefly (short) make the connection again to select programme position #2, etc., etc..

If no connection is made for approx. 4 seconds, the LED will display the set state again. (Example: programme position #4 is set by a user, the LED will blink 4 times) Two types of settings are available. Positions 1 through 10 set the undervoltage threshold and reset values. Positions 11 and 12 set the overvoltage threshold and reset values. These settings must be selected individually. The programmed positions are also retained when the battery voltage is disconnected.