BMV 702 status monitor

BMV trackers are new high-precision battery monitoring systems.

Why monitor battery operating conditions? For longer battery life! Detailed battery monitoring allows us to detect any operational deficiencies with quick remediation to support long battery life.

Suitable for all types of lead acid batteries including fleece (AGM) and gel batteries. Easy adjustment of battery capacity (factory setting to 200 Ah). Autodetection of 12, 24, 36, 48, 60, 120, 144 and 288 V. Regular automatic calibration of the instrument for reliable measurement readings (can also be done manually). The BMV 700H version is designed for systems with high operating voltage (70 - 350 V DC), the BMV702 version is designed for monitoring two batteries or monitoring battery temperature or xxx. The tracker is also suitable for Li-on batteries.

Basic display values:

- Current voltage (V) of the battery.

- current current (A) going into (positive values - charging) or out (negative values - discharging) of the battery

- the current power (W) going into (positive values - charging) or out (negative values - discharging) of the battery (voltage times current)

- the total amount of energy drawn from the battery to power appliances in ampere hours (Ah)

- current battery charge rate in percentage

- estimated (sophisticatedly calculated) length of time in hours to 50% battery discharge for a given power consumption

Technical parameters:

- supply voltage 6.5 - 95 V DC

- Power consumption with unlit display and relay off: 4 mA (12 V) and 3 mA (24 V)

- Power consumption with unlit display and relay on: 15 mA (12 V) and 8 mA (24 V)

- operating voltages: 12, 24 and 48 V (self-detection)

- maximum current through the shunt: -500 to +500 A (discharging and charging the battery)

- maximum deviation in voltage reading ±0.01 A at 0 - 100 V

- maximum deviation in current reading ±0.01 A with 500 A shunt

- maximum deviation in capacity reading ±0.1 Ah with battery capacities 0 - 100 Ah

- maximum deviation in capacity reading ±1 Ah for battery capacities 100 - 9999 Ah

- maximum deviation in state of charge ±0.1%

- maximum deviation in estimating time remaining ±1 hour (range 1-240 hours)

- maximum deviation in power reading ±1 W in the range from - 100 W to 1 kW

- for a total battery capacity of 20 - 9999 Ah

- operating temperature range -20 to + 50 °C

- circular diameter of the tracker itself: 63 mm

- square size of the self-tracker cap: 69 x 69 mm

- depth of the self-tracker: 31 mm

- switching relay: 60V/1 A maximum

- weight of the self-tracker: 70 g

- weight of the side cover: 315 g

- Shunt connection screws: M10

- Material: plastic

The tracker stores selected historical data and limit values reached:

- deepest battery discharge reached

- the rate of the last battery discharge

- number of battery discharge/charge cycles completed

- average battery discharge value

- number of full discharges of the battery

- maximum battery voltage achieved

- minimum battery voltage achieved

- number of days since the last full battery charge

The BMV-700 tracker delivery includes (see Figurequestions below):

- custom tracker with backlit digital display and controls

- plastic tracker cover measuring 69 x 69 mm

- 500A/50mV shunt designed for a maximum current of 500 A (to be installed on the negative battery cable)

- shunt connection screws: M10

- 10 m long RJ12 UTP communication and power cable (to connect the tracker to the shunt)

- 2 meter long installation cable with fuse to connect to the positive cable.

The tracker performs sophisticated monitoring of energy supplied and drawn, together with consideration of an adjustable Peukert exponent value (the greater the energy draw, the relative decrease in the amount of available energy in the battery and vice versa) and battery efficiency to estimate the actual amount of energy (Ah) and the battery charge rate (percentage).

To properly display the amount of available energy in the battery, it is necessary that all energy entering and leaving the battery pass through the shunt.

The actual tracker can be integrated into the wall without requiring access from the rear (covered screws).

For currents greater than 500 A, a replacement shunt designed for 1000 and 2000 A currents can be supplied.

Shunts up to a maximum current of 9,999 A with a voltage range of 1 - 100 mV (both adjustable) can be used on the tracker.

The monitor has a switched relay.

This is activated/deactivated based on the measured battery charge rate.

It is factory set to switch on when the battery charge level drops below 50% and off when the battery reaches 90% charge.

These values can be changed in the settings.

Also, the switching logic can be reversed, or the relay is on by default, off by default.

The relay can be used for switching on/off devices such as external alarm, power station etc.

The monitor can be connected to other devices. It is possible to connect the tracker with a large colour display Color Control GX.

To connect the BMV700 to the Color control GX display, either a VE.Direct cable or a VE.Direct-USB communication interface must be purchased.

Saved settings and measured historical and limit data remain stored even if the power to the tracker is interrupted.

Visual and acoustic alarms on over or under voltage, charged or discharged battery.

Possibility to switch an additional power source such as a generator via relay under defined conditions.