Lowara e-SM Smart Pump
Variable speed booster pump that keeps pressure constant, with readings, faults and setpoints.
The Lowara e-SM Smart Pump is a range of multistage booster pumps (e-HME, e-SVE, VME, e-SVIE) with an integrated variable speed drive that keeps pressure constant in buildings and water supply. This Modbus RTU template reads pressure, speed, power, temperatures and faults and lets you start, stop and set the pressure setpoint from ModbusCloud.
- Protocol
- Modbus RTU
- Connection
- RS485, 9600 baud
- Registers
- 196, read and write
- Brand
- Lowara
- Key readings
- Pressure · Motor speed · Power · Inverter current · Module temperature · Error code
- Available commands
- Start and stop · Control mode · Pressure setpoint · Speed in constant speed mode · Ramps · Multi-pump settings
- Compatible models
- e-HME · e-SVE · VME · e-SVIE · Lowara Smart Pump Range with e-SM drive, firmware 101.10 and later
- Last updated
Registers (196)
196 read, 41 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| Current Pressure | bar | Read | |||
| Motor Speed | rpm | Read | |||
| Current Power | W | Read | |||
| Inverter Current | A | Read | |||
| Inverter Voltage | V | Read | |||
| Effective Required Value | bar | Read | |||
| Power Module Temperature | °C | Read | |||
| Winding 1 Temperature | °C | Read | |||
| Winding 2 Temperature | °C | Read | |||
| Winding 3 Temperature | °C | Read | |||
| Current Error | Read | ||||
| Error Bitfield LSW | Read | ||||
| Error Bitfield MSW | Read | ||||
| Current Alarm | Read | ||||
| Alarm Bitfield LSW | Read | ||||
| Alarm Bitfield MSW | Read | ||||
| Start Stop Command | Read and write | ||||
| Auto Start | Read and write | ||||
| Control Mode | Read and write | ||||
| Speed Set ACT Mode | rpm | Read and write | |||
| Pressure Setpoint | bar | Read and write | |||
| Pressure Unit | Read and write | ||||
| Sensor Selection | Read and write | ||||
| Pressure Sensor 1 Full Scale | bar | Read and write | |||
| System Password | Read and write | ||||
| Lock Function | Read and write | ||||
| Test Run Time Start | h | Read | |||
| Test Run Speed | rpm | Read and write | |||
| Test Run Duration | s | Read and write | |||
| Keyboard Lock | Read and write | ||||
| Default Values Reload | Read and write | ||||
| Max RPM | rpm | Read and write | |||
| Min RPM | rpm | Read and write | |||
| Ramp 1 | s | Read and write | |||
| Ramp 2 | s | Read and write | |||
| Ramp 3 | s | Read and write | |||
| Ramp 4 | s | Read and write | |||
| Ramp Speed Min Acceleration | s | Read and write | |||
| Ramp Speed Min Deceleration | s | Read and write | |||
| Smin Time | s | Read and write | |||
| Window | % | Read and write | |||
| Hysteresis | % | Read and write | |||
| Regulation Restart Value | % | Read and write | |||
| Pressure Minimum Delay Time | s | Read and write | |||
| Speed Min Configuration | Read and write | ||||
| Pressure Minimum Threshold | bar | Read and write | |||
| Pressure Minimum Auto Reset | Read and write | ||||
| Avoid Frequent Parameter Saving | Read and write | ||||
| Multipump Max Units | Read and write | ||||
| Multipump Switch Interval | h | Read and write | |||
| Multipump Sync Speed Limit | rpm | Read and write | |||
| Multipump Sync Window | rpm | Read and write | |||
| Multipump Actual Value Increase | bar | Read and write | |||
| Multipump Actual Value Decrease | bar | Read and write | |||
| Lack of Water Switch Input | Read and write | ||||
| Multipump Enable Speed | rpm | Read and write | |||
| Multipump Priority | Read | ||||
| Multipump Revision | Read | ||||
| Speed Lift | rpm | Read and write | |||
| Lift Amount | % | Read and write | |||
| Operating Time | s | Read | |||
| Motor Time | s | Read | |||
| Software Version | Read | ||||
| Map Version Progressive | Read | ||||
| Map Version | Read | ||||
| Preset Parameter Progressive | Read | ||||
| Preset Parameter Version | Read | ||||
| Hydraulic Version | Read | ||||
| Error Log 0 Error Code | Read | ||||
| Error Log 0 Start Time | s | Read | |||
| Error Log 0 End Time | s | Read | |||
| Error Log 0 Error Bitfield LSW | Read | ||||
| Error Log 0 Occurrences | Read | ||||
| Error Log 0 Speed Set | rpm | Read | |||
| Error Log 0 Speed Measured | rpm | Read | |||
| Error Log 0 Phase Current | A | Read | |||
| Error Log 0 Alarm Bitfield LSW | Read | ||||
| Error Log 0 Alarm Bitfield MSW | Read | ||||
| Error Log 0 IO Status Bitfield | Read | ||||
| Error Log 0 Power | W | Read | |||
| Error Log 0 Pressure | bar | Read | |||
| Error Log 0 Module Temperature | °C | Read | |||
| Error Log 0 Start Stop Status | Read | ||||
| Error Log 0 Error Bitfield MSW | Read | ||||
| Error Log 1 Error Code | Read | ||||
| Error Log 1 Start Time | s | Read | |||
| Error Log 1 End Time | s | Read | |||
| Error Log 1 Error Bitfield LSW | Read | ||||
| Error Log 1 Occurrences | Read | ||||
| Error Log 1 Speed Set | rpm | Read | |||
| Error Log 1 Speed Measured | rpm | Read | |||
| Error Log 1 Phase Current | A | Read | |||
| Error Log 1 Alarm Bitfield LSW | Read | ||||
| Error Log 1 Alarm Bitfield MSW | Read | ||||
| Error Log 1 IO Status Bitfield | Read | ||||
| Error Log 1 Power | W | Read | |||
| Error Log 1 Pressure | bar | Read | |||
| Error Log 1 Module Temperature | °C | Read | |||
| Error Log 1 Start Stop Status | Read | ||||
| Error Log 1 Error Bitfield MSW | Read | ||||
| Error Log 2 Error Code | Read | ||||
| Error Log 2 Start Time | s | Read | |||
| Error Log 2 End Time | s | Read | |||
| Error Log 2 Error Bitfield LSW | Read | ||||
| Error Log 2 Occurrences | Read | ||||
| Error Log 2 Speed Set | rpm | Read | |||
| Error Log 2 Speed Measured | rpm | Read | |||
| Error Log 2 Phase Current | A | Read | |||
| Error Log 2 Alarm Bitfield LSW | Read | ||||
| Error Log 2 Alarm Bitfield MSW | Read | ||||
| Error Log 2 IO Status Bitfield | Read | ||||
| Error Log 2 Power | W | Read | |||
| Error Log 2 Pressure | bar | Read | |||
| Error Log 2 Module Temperature | °C | Read | |||
| Error Log 2 Start Stop Status | Read | ||||
| Error Log 2 Error Bitfield MSW | Read | ||||
| Error Log 3 Error Code | Read | ||||
| Error Log 3 Start Time | s | Read | |||
| Error Log 3 End Time | s | Read | |||
| Error Log 3 Error Bitfield LSW | Read | ||||
| Error Log 3 Occurrences | Read | ||||
| Error Log 3 Speed Set | rpm | Read | |||
| Error Log 3 Speed Measured | rpm | Read | |||
| Error Log 3 Phase Current | A | Read | |||
| Error Log 3 Alarm Bitfield LSW | Read | ||||
| Error Log 3 Alarm Bitfield MSW | Read | ||||
| Error Log 3 IO Status Bitfield | Read | ||||
| Error Log 3 Power | W | Read | |||
| Error Log 3 Pressure | bar | Read | |||
| Error Log 3 Module Temperature | °C | Read | |||
| Error Log 3 Start Stop Status | Read | ||||
| Error Log 3 Error Bitfield MSW | Read | ||||
| Error Log 4 Error Code | Read | ||||
| Error Log 4 Start Time | s | Read | |||
| Error Log 4 End Time | s | Read | |||
| Error Log 4 Error Bitfield LSW | Read | ||||
| Error Log 4 Occurrences | Read | ||||
| Error Log 4 Speed Set | rpm | Read | |||
| Error Log 4 Speed Measured | rpm | Read | |||
| Error Log 4 Phase Current | A | Read | |||
| Error Log 4 Alarm Bitfield LSW | Read | ||||
| Error Log 4 Alarm Bitfield MSW | Read | ||||
| Error Log 4 IO Status Bitfield | Read | ||||
| Error Log 4 Power | W | Read | |||
| Error Log 4 Pressure | bar | Read | |||
| Error Log 4 Module Temperature | °C | Read | |||
| Error Log 4 Start Stop Status | Read | ||||
| Error Log 4 Error Bitfield MSW | Read | ||||
| Error Log 5 Error Code | Read | ||||
| Error Log 5 Start Time | s | Read | |||
| Error Log 5 End Time | s | Read | |||
| Error Log 5 Error Bitfield LSW | Read | ||||
| Error Log 5 Occurrences | Read | ||||
| Error Log 5 Speed Set | rpm | Read | |||
| Error Log 5 Speed Measured | rpm | Read | |||
| Error Log 5 Phase Current | A | Read | |||
| Error Log 5 Alarm Bitfield LSW | Read | ||||
| Error Log 5 Alarm Bitfield MSW | Read | ||||
| Error Log 5 IO Status Bitfield | Read | ||||
| Error Log 5 Power | W | Read | |||
| Error Log 5 Pressure | bar | Read | |||
| Error Log 5 Module Temperature | °C | Read | |||
| Error Log 5 Start Stop Status | Read | ||||
| Error Log 5 Error Bitfield MSW | Read | ||||
| Error Log 6 Error Code | Read | ||||
| Error Log 6 Start Time | s | Read | |||
| Error Log 6 End Time | s | Read | |||
| Error Log 6 Error Bitfield LSW | Read | ||||
| Error Log 6 Occurrences | Read | ||||
| Error Log 6 Speed Set | rpm | Read | |||
| Error Log 6 Speed Measured | rpm | Read | |||
| Error Log 6 Phase Current | A | Read | |||
| Error Log 6 Alarm Bitfield LSW | Read | ||||
| Error Log 6 Alarm Bitfield MSW | Read | ||||
| Error Log 6 IO Status Bitfield | Read | ||||
| Error Log 6 Power | W | Read | |||
| Error Log 6 Pressure | bar | Read | |||
| Error Log 6 Module Temperature | °C | Read | |||
| Error Log 6 Start Stop Status | Read | ||||
| Error Log 6 Error Bitfield MSW | Read | ||||
| Error Log 7 Error Code | Read | ||||
| Error Log 7 Start Time | s | Read | |||
| Error Log 7 End Time | s | Read | |||
| Error Log 7 Error Bitfield LSW | Read | ||||
| Error Log 7 Occurrences | Read | ||||
| Error Log 7 Speed Set | rpm | Read | |||
| Error Log 7 Speed Measured | rpm | Read | |||
| Error Log 7 Phase Current | A | Read | |||
| Error Log 7 Alarm Bitfield LSW | Read | ||||
| Error Log 7 Alarm Bitfield MSW | Read | ||||
| Error Log 7 IO Status Bitfield | Read | ||||
| Error Log 7 Power | W | Read | |||
| Error Log 7 Pressure | bar | Read | |||
| Error Log 7 Module Temperature | °C | Read | |||
| Error Log 7 Start Stop Status | Read | ||||
| Error Log 7 Error Bitfield MSW | Read |
Loading registers…
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If a device is not in the library yet, we build the template for free as soon as we have the register data.
Use cases
- Show pressure, speed and power of each booster pump on a ModbusCloud dashboard.
- Get an email alert when the current error code is not zero or the pump reports dry running.
- Keep a year of pressure history to see when demand peaks in the building.
- Adjust the pressure setpoint from ModbusCloud without going to the pump room.
- Track operating time per pump to plan maintenance.
Installation
Connect A1, B1 and GND of the drive terminals to the RS485 port of the ModbusCloud Gateway and terminate both bus ends with 120 ohm.
On the pump, select Modbus RTU in P50 and set address, baud rate and parity in P51, P52 and P54.
Set P69 Avoid frequent parameter saving to yes if you will write values from ModbusCloud.
In ModbusCloud, add a Modbus device on the Gateway with the same settings and import this template.
Check that current pressure and motor speed match the pump display.
Things to watch for
The pump does not answer on Modbus. What should I check?
Check that P50 is set to Modbus RTU and that address, baud rate and parity in P51, P52 and P54 match ModbusCloud. Default is address 1, 9600 baud, 8N1. Then check A1 and B1 and the termination.
Why does the pressure read 100 times too high?
Pressure registers count in hundredths of a bar, 520 is 5.20 bar. The template already applies that. If P41 is set to PSI, the registers count in tenths of a psi and the bar unit in the template no longer applies.
Why can I no longer change settings on the pump itself?
While Modbus communication is active, the drive locks most parameters on its push buttons to avoid conflicts with the external device. Stop the Modbus communication to edit them locally again.
What should I watch out for when writing values?
The drive only accepts writes with function code 16. Every write is stored in EEPROM, so set P69 to yes and do not write setpoints in short cycles. Writing 1 to Default Values Reload resets the pump to factory settings.
Want to see how it works?
