Battery Module
The UPS uses 48 V lithium battery modules to provide backup power. The 3 kVA UPS supports the ESM-4850A3, ESM-48100B1, and ESM-48150B1.
No. |
Silk Screen |
Name |
Description |
|---|---|---|---|
1 |
GND |
Protective ground |
M6 screw |
2 |
DO1 DO2 |
ESM dry contact output |
Reserved. |
3 |
COM_ IN |
Communications port |
|
4 |
COM_ OUT |
Communications port |
|
5 |
RUN |
Running indicator |
For details about indicator functions, see the LED indicator description. |
ALM |
Alarm indicator |
||
CHG |
Charge indicator |
||
DCHG |
Discharge indicator |
||
SOC |
SOC indicator |
||
6 |
MANUAL ON/OFF |
Button for manual power-on/off |
This is a contact button used for manual power-on/off and maintenance. |
7 |
PWR |
ESMU port for connecting to an external power source |
Reserved. |
8 |
+ |
ESM positive terminal |
Positive and negative ports of the ESM. They are secured by M6 screws. Appropriate OT terminals should be used. The required torque is 4.5–5.5 N·m and the recommended cable size is 25 mm2. If the ESM is used at a temperature below 45°C, the cable size can be smaller but should be at least 16 mm2. |
- |
ESM negative terminal |
LED Indicators
Silk Screen |
Meaning |
Color |
Description |
|---|---|---|---|
RUN |
Running indicator |
Green |
Steady on: Communication is normal (including board startup, self-check, software loading, and board power-on when not loaded; excluding sleep when the power port or activation port is energized). Steady off: The ESM is in sleep mode. Blinking fast: Communication is interrupted. |
ALM |
Fault indicator |
Red |
Steady on: There is a fault or major alarm. Steady off: There is no fault or major alarm. |
CHG |
Charge indicator |
Green |
Steady on: The ESM is being charged. Steady off: The ESM is open-circuited or discharging. |
DCHG |
Discharge indicator |
Green |
Steady on: The ESM is being discharged. Steady off: The ESM is open-circuited or being charged. |
SOC |
SOC indicators |
Green |
1. 0–24% capacity 25% indicator: blinking Other SOC indicators: off 2. 25%–49% capacity 25% indicator: steady on 50% indicator: blinking Other SOC indicators: off 3. 50%–74% capacity 25% indicator: steady on 50% indicator: steady on 75% indicator: blinking Other SOC indicators: off 4. 75%–99% capacity 25% indicator: steady on 50% indicator: steady on 75% indicator: steady on 100% indicator: blinking 5. 100% capacity The four SOC indicators are steady on. |
Note:
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Activation and Startup
An ESM can be activated in the following two modes. After being activated, the ESM switches from sleep mode to disconnected mode.
- Activation through the MANUAL ON/OFF button: Hold down the MANUAL ON/OFF button on the ESM panel for at least 5s and less than 15s.
- Activation through the power port: Supply the DC input voltage of 43.2–58 V (50 Ah), 43.2–58 V (100 Ah), or 43.2–59 V (150 Ah) to the power terminal on the front panel for at least 5s.
- The MANUAL ON/OFF button is a contact button. The interval for pressing the button should be greater than 0.5s; otherwise, the operation is ineffective.
- If you have powered off the ESM that is in charging, discharging, or disconnected mode by holding down the MANUAL ON/OFF button, you need to hold down this button again to reactivate the ESM.
- If the UPS is configured with 48 V lithium batteries, other optional components and independent communications with lithium batteries are not supported.