BVSLWE01 – Retrofit Motor for Ball Valve (LoRaWAN)
Product Description
This motor converts existing ball valve fittings into intelligent water control devices. An innovative clamping mechanism allows installation within minutes without additional tools on shut-off valves with pipe diameters between 0.5 and 1.5 inches. A patented coupling mechanism delivers up to 8 Nm of torque to function even with rusty and old valves.
Key Features:
- Water and dust protected (IP66) up to the power supply, suitable for wet, dirty, and outdoor environments
- Automatic weekly valve exercise: one close/open movement (1/8 turn) removes deposits in the valve
- Rotation angle measurement and end position detection
- Slow approach to end positions to minimize friction
- External 12 V power supply via waterproof connector
- Optional wired leak sensor connectable
- Control via local button or LoRaWAN (Class C)
- Operation is LoRaWAN-dependent
Installation
- Disconnect the device from power
- Choose the correct fork side matching the valve handle width
- Ensure clamping buttons and handle face opposite directions (the handle must be able to move freely)
- Tighten the clamps by hand while holding the BVS
- Optional: Remove the dust cover and connect the local water sensor
- Connect the DC adapter to the BVS power cable, tighten the waterproof seal
- Plug the mains adapter into a 230 V outlet
Adjusting the Pipe Clamps
The pipe clamps are positioned in the center of the bracket in the factory state. They can be shifted to the right or left by turning them fully closed while not on the pipe. Shifting adjusts them to different pipe thicknesses.
For even larger pipes, the clamps can be replaced with a pair of larger clamps with SKU BVSCMP01 (available in the shop). This enables operation on pipes up to 2 inches.
Calibration
The device measures the rotation angle and the end positions of the handle to approach the endpoints gently and avoid mechanical stress. Each time the device is powered on, it first performs a calibration run.
Procedure: Press the button once to start the process. Observe the handle movements. After 10–20 seconds, the device is ready for operation.
Calibration requires the BVS to be mounted on a ball valve. Without a valve, calibration aborts and handle operation (button and radio command) is disabled.
External Water Sensor
Optional wired water sensor. The socket is located on the power cable next to the motor.
- Remove the blue/white protective pad
- Plug the sensor in firmly (firm pressure ensures a waterproof connection)
When water is detected:
- Flood alarm is triggered, LED blinks red
- Depending on parameter 8: valve closes automatically or maintains current position
- Clear alarm: hold button for 2 seconds or via LoRaWAN command
The flood sensor can be extended with a 1.5 m extension ALIEXT01 (available in the shop).
Manual Operation
The device has a single button with a built-in tri-color LED.
- Short click: Toggle valve (open/close)
- Hold for several seconds: Continuous operation (the BVS helps count the seconds by beeping every second)
- Hold for 2 seconds (2 beeps): Deactivate alarm
The device is designed for outdoor use and must prevent malfunctions from water droplets. Therefore, please press the button firmly, even for a short click.
LEDs
| LED | Meaning |
|---|---|
| Green slow blinking | Valve open (can be disabled via app) |
| Red slow blinking | Valve closed (can be disabled via app) |
| Red/Green blinking | Motor is moving |
| Red blinking or red permanent | Alarm |
| Red triple blinking | Motor is blocked |
| Green blinking | Connecting to the LoRaWAN network |
LoRaWAN Communication
See LoRaWAN Connection for setup, keys, JOIN/Rejoin behavior, TTN integration, and the complete Daisychain Protocol with all uplink/downlink commands.
Supported Sensor Types
| ID | Sensor | Unit | Example |
|---|---|---|---|
0x01 | Temperature | 1/10 °C (two's complement) | 0x00CD = 20.5 °C; 0xFFEA = −2.0 °C |
Alarm Types
| ID | Alarm | Value |
|---|---|---|
0x01 | Flood sensor triggered | 0x01 (active) / 0x00 (inactive) |
0x02 | Frost risk | current temperature |
0x03 | Temperature out of range | current temperature |
Configuration Parameters
All parameters are 16-bit values.
| No. | Parameter | Default | Range / Description |
|---|---|---|---|
| 1 | Status Interval | 0x0015 (15 min) | 0x0005–0x10E0, reporting interval in minutes |
| 2 | Message Type | 0x01 | 0x01=confirmed, 0x00=unconfirmed |
| 3 | Temperature Unit | 0x00 | 0x00=Celsius, 0x01=Fahrenheit |
| 4 | Alarm Repeat | 0x0301 | MSB=number of repeats (default 3), LSB=interval in minutes (default 1) |
| 5 | Valve Exercise | 0x0107 | MSB=enabled (0x01) or disabled (0x00), LSB=interval in days (1–30); default: weekly |
| 6 | Local Display | 0x0101 | MSB=LED (0x01=active), LSB=Buzzer (0x01=active) |
| 7 | Temperature Threshold | 0x000a | Change threshold in 0.1 °C (minimum 0x000a = 1 °C) |
| 8 | Auto-Close on Flood | 0x00 | 0x00=do not close, 0x01=close; alarm is always reported |
| 9 | Buzzer on Join | 0x01 | 0x01=sound on server join, 0x00=silent |
Scope of Delivery
- Motor with connection cable
- 1x wired water sensor
- 12 V power supply
Technical Specifications
| Parameter | Value |
|---|---|
| Physical | |
| SKU | BVSLWE01 (EU) |
| Dimensions | 148 x 96 x 133 mm |
| Weight | 603 g |
| Color | White |
| Max. Torque at Coupling Fork | 7 Nm |
| LoRaWAN | |
| Module | SX 1261 |
| Frequency (EU) | 868.42 & 869.85 MHz |
| Activation | OTAA |
| Class | C |
| Version | 1.0.2 |
| Accessories & Interfaces | |
| Water Sensor | Local sensor probe |
| Temperature Sensor | MCP9700x (-40 °C to +125 °C / -40 °F to +257 °F) |
| Button | Water-protected touch button |
| Indicator | Tri-color LED (green, yellow, red) |
| Buzzer | Max. 85 dB |
| Power Supply | |
| Input Voltage | AC (110 V 60 Hz / 220 V 50 Hz) or DC (12 V / 1 A) |
| Standby Consumption | ~10 mA @ 12 VDC = 0.12 W |
| Motor Movement max. | ~700 mA @ 12 VDC = 8.4 W |
| Environmental Conditions | |
| Shipping/Storage | -30 °C to +70 °C |
| Operation | -20 °C to 60 °C |
| Protection Rating | IP66 (up to the power supply); power supply IP20 |
| Customs Tariff Number | 85011093900 |