Electronic Products For The Automotive Market
E1045 24V 200A BATTERY MANAGEMENT UNIT
This unit was designed to monitor the voltage of a
battery and connect or disconnect a load of up to
200A.
When the battery voltage is above the Switch “On”
voltage (26V) the load is connected to the battery.
When the battery voltage drops below the Switch
“Off” voltage (23.5V) after a short delay the load is
disconnected. The Unit then switches to low power
mode until the battery is recharged and the voltage
rises above the Switch “On” voltage, then the load is
reconnected to the battery.
An override pin allows the load to be connected* for
emergency use only.
To reduce power consumption to a minimum (10mA
“On”, < 1mA “Off”) a latching contactor is used.
battery and connect or disconnect a load of up to
200A.
When the battery voltage is above the Switch “On”
voltage (26V) the load is connected to the battery.
When the battery voltage drops below the Switch
“Off” voltage (23.5V) after a short delay the load is
disconnected. The Unit then switches to low power
mode until the battery is recharged and the voltage
rises above the Switch “On” voltage, then the load is
reconnected to the battery.
An override pin allows the load to be connected* for
emergency use only.
To reduce power consumption to a minimum (10mA
“On”, < 1mA “Off”) a latching contactor is used.
Part Number
E1045
Description
24V 200A Battery Management Unit
Supply Voltage
20V to 30V
Supply Current: Contactor “On”, No Load
10mA Typical
Supply Current: Contactor “Off”, No Load
<1mA
Contactor Load Current
200A
Switch “On” Voltage adjustment range
23.5V to 26.5V
Switch “Off” Voltage Hysteresis range
0.2V to 2V
Factory Setting: Switch “On” Voltage
26.0V
Factory Setting: Switch “Off” Voltage
23.5V
Override Input Resistance
>150kΩ
Override Input Voltage* (Active)
> 20V
Case Style
Water Proof Enclosure
Dimensions
228 x 140 x 90 mm
Weight
1.2kg
Fixing
4 x 8mm Holes, 210mm X 68mm Pitch
Case Material
Grey ABS
Bracket material
Aluminium Alloy
When the contactor is “On” the coil is pulsed to ensure it remains on
When the contactor is “Off” the coil is pulsed for approx. 2 minute before the unit goes
to low power mode.
The Switch “On” and Switch “Off” voltages are factory set but can be adjusted by the
customer.
An internal light emitting diode (led) is used as a multipurpose indicator:
When the contactor is “Off” the coil is pulsed for approx. 2 minute before the unit goes
to low power mode.
The Switch “On” and Switch “Off” voltages are factory set but can be adjusted by the
customer.
An internal light emitting diode (led) is used as a multipurpose indicator:
1. Led on - the units output is pulsing the contactors coil “On”
2. Led off - the unit is in low power mode
3. Led flashes each time the contactor coil is pulsed
4. Aids setting of the switch “On” and “Off” voltages
*Note:
1. If the override facility is used and the battery voltage drops below 20.0V the Contactor will not disconnect the load. When power is applied to the override pin there may be a delay of up to 30 seconds before the Contactor switches.
2. Before connecting to the power terminals check the Contactor contacts are open. If they are closed apply power to the “Battery –ve” and “Battery +ve” terminals, the Contactor contacts should open.
1. If the override facility is used and the battery voltage drops below 20.0V the Contactor will not disconnect the load. When power is applied to the override pin there may be a delay of up to 30 seconds before the Contactor switches.
2. Before connecting to the power terminals check the Contactor contacts are open. If they are closed apply power to the “Battery –ve” and “Battery +ve” terminals, the Contactor contacts should open.
Go to Wiring Diagram for E1045
Go to 12V Version of this Unit
