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--- wiki:01.battery_iq:01.btms:02.hardware:02.bm-sm [2025/04/08 11:09] – created goran.kocjancic
+++ wiki:01.battery_iq:01.btms:02.hardware:02.bm-sm [2025/04/16 10:48] (current) – maja.lovko
@@ Line 1: / Line 1: @@
 ====== BM-SM ======
+**BTMS String master**
+<WRAP column 450px>
+{{:wiki:01.battery_iq:01.btms:02.hardware:string_master_new.png?200|}}
+</WRAP>
+<WRAP column 300px>
+| 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  |
+</WRAP>
+<WRAP clear></WRAP>
+===== 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 =====
+|<600px 200px 100px>|
+^ 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**
+|<600px 200px>|
+^ Normal operation  | Green LED  |
+^ Alarm             | Red LED    |
+===== Wiring =====
+{{:wiki:01.battery_iq:01.btms:02.hardware:picture2-bm-sm.png?nolink&400|}}