Light Stream UPS LITE - Technical datasheet
Features
No interruptions
When the main power is lost, the module switches the load to the battery seamlessly - the equipment does not reboot or shut down.
An hour of battery runtime
The built-in 15 Wh battery powers a 15 W load for about 60 minutes; at a lower load, it lasts longer.
Fits your power supply
The module works with power supplies from 10 to 27 V. The output voltage adjusts automatically to the input voltage or can be set manually.
Battery information
The battery charge level, voltages, currents and temperature are available to the control system. It can warn of a low battery in advance or shut down gracefully.
More power and runtime
Several modules can be connected in parallel - their power and runtime add up. For example, three modules hold a load of up to 35–40 W, and a 15 W load for more than three hours.
Long battery life
The module monitors the charge itself and does not charge the battery "to the limit" - this makes it last noticeably longer.
Battery protection
The battery is protected against overcharge, deep discharge, overload, short circuit and overheating. Charging in the cold is prevented.
Storage and transport mode
The module can be put to "sleep" so that the battery does not discharge during storage and delivery, even when already mounted in a cabinet. It wakes up by itself when power is applied.
Backlit button
The button on the housing turns the module on and off and shows its state. Presses of the button can be used to control other devices in the system.
Dimensions
36 × 90 × 58 mm (W × H × D)
Technical specifications
Ergonomics
| Parameter | Value |
|---|---|
| Mounting | 35 mm DIN rail |
| Overall dimensions (W × H × D) | 36 mm • 90 mm • 58 mm |
| Weight (with box) | 185 g |
| Controls and indication | Button with state backlight |
Interfaces
| Parameter | Value |
|---|---|
| Control interface | RS-485, Modbus RTU |
| Power terminals | Vin, Vout, GND |
| Wire cross-section with ferrule | control inputs: 0.35…1 mm² (two wires in one ferrule — 0.35…0.5 mm²); power: up to 2.5 mm² (two wires — up to 1.5 mm²) |
| Ferrule length | 8 mm |
| Screw tightening torque | 0.2 N·m — control inputs, 0.5 N·m — power |
Power
| Parameter | Value |
|---|---|
| Input voltage | 10–27 V |
| Output voltage when running on battery | 9–25 V |
| Rated power | 15 W |
| Peak power | 20 W |
| Power consumption while charging | up to 6 W (at a charge current of 600 mA) |
| Self-consumption from the input with a charged battery | up to 18 mA |
| Battery consumption when switched off | up to 210 µA |
| Battery consumption in storage and transport mode | 70 µA |
Battery
| Parameter | Value |
|---|---|
| Cells | 2 × Li-ion 18650, 3.6 V |
| Rated energy | 15 Wh |
| Runtime at 15 W | 60 min |
| End-of-charge voltage | 8.1 V |
| Charge current | 300–2000 mA, default 600 mA |
| Full charge time | up to 4.5 h |
| Battery temperature while charging | +5 to +50 °C |
| End-of-charge voltage | 8.1 V |
| Battery temperature while running on battery | −20 to +60 °C |
Modbus
| Parameter | Value |
|---|---|
| Protocol | Modbus RTU over RS-485 |
| Address | 1–247, factory address is on the sticker on the side of the housing |
| Speed | 1200–115,200 bps, default 9600 bps |
| Voltage measurement limit | 25.6 V |
| Firmware update | over RS-485, settings are preserved |
Operating conditions
| Parameter | Value |
|---|---|
| Air temperature | −20 to +45 °C |
| Humidity | up to 95%, non-condensing |
| Storage temperature (recommended) | −5 to +35 °C |
| Service life | 5 years |
Connection
| Terminals | Purpose |
|---|---|
| Vin, GND | input from the main power supply, 10–27 V |
| Vout, GND | uninterruptible output to the load |
Control and status monitoring are over the RS-485 line. When connecting several modules in parallel, make the wires from each module to the common point the same length and the same cross-section.
Caution
- If the battery heats up above +60 °C, the module will switch off the output until it cools down. Do not place the module next to devices that heat up strongly — contactors, power supplies — and leave a gap of about 1 cm to neighboring devices.
- To get a power close to 15 W for the entire time of running on battery, the temperature in the cabinet must not exceed +30 °C.
- Parallel operation mode is enabled by default, and the output voltage may drop slightly in this mode. If there is only one module in the system and an exact voltage is required, this mode should be disabled.
- A charge level fluctuating roughly between 85 and 100% while power is applied is normal operation of the module, not a fault: the battery is topped up periodically rather than kept on constant charge.
Package contents
- Light Stream UPS LITE
Maintenance
Connecting cables and wires must be in good condition and securely fastened. If the device works properly and no new features are needed, installing updates is not required. Before updating, it is recommended to back up the settings so that you can return to the previous version.
Safety
- Do not expose the device to rain or moisture — this will void the warranty.
- Do not remove the cover: there are no user-serviceable parts inside.
- Never connect the device to a dimmer.
- Never connect 0 V to electrical ground.
Warranty
3-year limited manufacturer's warranty (2 years for products sold before 30.09.2024).
Warranty service is not provided:
- for mechanical and other damage to the product caused by the buyer;
- for lamps, fuses, galvanic isolation and protection components;
- if the product was repaired by the buyer or by third parties;
- if the design of the product was modified;
- for equipment operated in violation of the power quality and capacity requirements of GOST 13109-97, under emergency conditions, or exposed to lightning strikes, fire or other extreme conditions;
- for product accessories (including cables, external power supplies, packaging) and parts not included in the delivery;
- if the wiring diagram or the rules of storage, transportation and operation were violated;
- if the product was exposed to chemicals or abrasive cleaning agents;
- if the product was used for purposes other than those stated in the datasheet;
- for damage caused by natural disasters or fire;
- if the manufacturer's (supplier's) label is missing.