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wiki:01.battery_iq:01.btms:02.hardware:02.bm-sm
This version is outdated by a newer approved version.DiffThis version (2025/04/15 10:11) is a draft.
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Table of Contents

BM-SM

BTMS String master

Order code: BM-SM-xx (xx-see manual)
Mounting: On battery or rail, 3M double sided adhesive tape, DIN rail
Dimensions: 60 × 80 × 30 mm

Highlights & Features

  • String DC voltage, string charge-discharge current, charge-discharge state and string SOC.
  • Voltage, internal resistance, temperature, SOC and SOH of each battery (with BM-CS sensor).
  • Two serial ports for optional sensors and touch display.
  • Power supply (4W) directly from POE Ethernet.
  • Sensor auto-addressing. Insulated sensor bus.
  • Advanced measurement algorithm.
  • Programmable (EN-61131-3) actions: disconnect string, turn ventilation ON, etc.
  • Balancing function: Keep voltage balanced during the floating charge phase of battery pack, keeping the individual battery in the best state, extending backup time and life span of battery pack.
  • Supports up to 80 cell sensors, 1000V system

Technical specification

Power supply Nominal POE
Power loss ≤ 2W
Operating temperature Standard 0 .. 45 °C
Limit -10 .. 55 °C
Storage temperature -40 .. 70 °C
Working humidity 5 .. 95 %RH, non-condensing
Dimensions: Width 60 mm
Height 80 mm
Depth 30 mm
Voltage measurements Range 20 .. 800 VDC
Accuracy ± 0.5 %
Resolution 0.01 VDC
Current measurements Range -1000 .. 1000 A
Accuracy ± 2 %
Resolution 0.01 ADC

LED indicator

Normal operation Green LED
Alarm Red LED

Wiring

wiki/01.battery_iq/01.btms/02.hardware/02.bm-sm.1744711876.txt.gz · Last modified: 2025/04/15 10:11 by maja.lovko