Eaton PowerXL DC1
Compact frequency inverter with speed control, motor values and drive parameters.
The Eaton PowerXL DC1 is a compact frequency inverter that controls the speed of three phase motors in pumps, fans and conveyors. This Modbus RTU template reads status, faults, frequency, current, torque, power, DC link voltage and temperatures, and lets you write the command word, speed reference, ramp time and drive parameters from ModbusCloud.
- Protocol
- Modbus RTU
- Connection
- RS485, 9600 baud
- Registers
- 100, read and write
- Brand
- Eaton
- Key readings
- Output frequency · Motor current · Motor torque · Output power · DC link voltage · Heatsink temperature · Fault number
- Available commands
- Command word · Speed reference · Ramp time · Drive parameters
- Compatible models
- PowerXL DC1 (DC1-1D, DC1-12, DC1-32, DC1-34)
- Last updated
Registers (100)
100 read, 72 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| Status and Fault Word | Read | ||||
| Actual Speed | Hz | Read | |||
| Motor Current | A | Read | |||
| Motor Torque | % | Read | |||
| Output Power | kW | Read | |||
| DC Link Voltage | V | Read | |||
| Heatsink Temperature | °C | Read | |||
| Control Board Temperature | °C | Read | |||
| Motor Voltage | Read | ||||
| Analog Input 1 | % | Read | |||
| Analog Input 2 | % | Read | |||
| Digital Inputs | Read | ||||
| Run Time Hours | h | Read | |||
| Run Time Min Sec | Read | ||||
| Hours Run Enable Hours | h | Read | |||
| Hours Run Enable Min Sec | Read | ||||
| Scope Channel 1 | Read | ||||
| Scope Channel 2 | Read | ||||
| Fieldbus Command | Read and write | ||||
| Speed Reference | Hz | Read and write | |||
| Modbus Ramp Time | s | Read and write | |||
| Drive Type Code | Read | ||||
| Drive Power | Read | ||||
| Voltage Range | V | Read | |||
| Control Software Version | Read | ||||
| Power Software Version | Read | ||||
| Drive Recognition | Read | ||||
| Serial Number 4 | Read | ||||
| Serial Number 3 | Read | ||||
| Serial Number 2 | Read | ||||
| Serial Number 1 | Read | ||||
| Maximum Frequency | Hz | Read and write | |||
| Minimum Frequency | Hz | Read and write | |||
| Acceleration Time | s | Read and write | |||
| Deceleration Time | s | Read and write | |||
| Stop Mode | Read and write | ||||
| Energy Optimizer | Read and write | ||||
| Motor Nominal Voltage | V | Read and write | |||
| Motor Nominal Current | A | Read and write | |||
| Motor Nominal Frequency | Hz | Read and write | |||
| Motor Nominal Speed | rpm | Read and write | |||
| Voltage Boost | % | Read and write | |||
| Control Source | Read and write | ||||
| Application Mode Macro | Read and write | ||||
| Password | Read and write | ||||
| Digital Input Configuration | Read and write | ||||
| AI1 Signal Range | Read and write | ||||
| Switching Frequency | Read and write | ||||
| Relay Output 1 Function | Read and write | ||||
| Relay Output 1 Upper Limit | % | Read and write | |||
| Fixed Frequency 1 | Hz | Read and write | |||
| Fixed Frequency 2 | Hz | Read and write | |||
| Fixed Frequency 3 | Hz | Read and write | |||
| Fixed Frequency 4 | Hz | Read and write | |||
| Quick Deceleration Time | s | Read and write | |||
| Analog Output 1 Function | Read and write | ||||
| Skip Band 1 | Hz | Read and write | |||
| Skip Frequency 1 | Hz | Read and write | |||
| V/f Mid Voltage | V | Read and write | |||
| V/f Mid Frequency | Hz | Read and write | |||
| Start Mode | Read and write | ||||
| Digital Reference Reset Mode | Read and write | ||||
| DC Brake | Read and write | ||||
| Spin Start Enable | Read and write | ||||
| Brake Chopper | Read and write | ||||
| AI1 Gain | % | Read and write | |||
| RS485 Settings | Read and write | ||||
| Password Level 2 | Read and write | ||||
| Parameter Lock | Read and write | ||||
| AI1 Offset | % | Read and write | |||
| Display Scale | Read and write | ||||
| PID1 Kp | Read and write | ||||
| PID1 Ti | s | Read and write | |||
| PID1 Mode | Read and write | ||||
| PID1 Setpoint Source | Read and write | ||||
| PID1 Digital Setpoint | Read and write | ||||
| PID1 Feedback Source | Read and write | ||||
| AI2 Signal Range | Read and write | ||||
| Standby Time | s | Read and write | |||
| PID1 Wake Up Level | Read and write | ||||
| CAN Baud Rate | Read and write | ||||
| Thermal Memory Enable | Read and write | ||||
| Parameter Access | Read and write | ||||
| Action on Communication Loss | Read and write | ||||
| Relay Output 1 Hysteresis | Read and write | ||||
| Relay Output 1 On Delay | s | Read and write | |||
| Modbus Parity | Read and write | ||||
| TCP Enable Service | Read and write | ||||
| TCP Security Timeout | Read and write | ||||
| Motor Control Mode | Read and write | ||||
| Motor Identification | Read and write | ||||
| Speed Controller Gain | % | Read and write | |||
| Current Limit | % | Read and write | |||
| Stator Resistance | Ω | Read and write | |||
| Stator Inductance d-Axis | Read and write | ||||
| Stator Inductance q-Axis | Read and write | ||||
| DC Brake Frequency at Stop | Hz | Read and write | |||
| DC Brake Current | % | Read and write | |||
| Local Control Logic 1 | Read and write | ||||
| Local Control Logic 2 | Read and write |
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Use cases
- Show frequency, current and power of each drive on one dashboard for a pump or fan installation.
- Get an alert when the fault bit is set and see the fault number, such as overcurrent or overtemperature.
- Watch heatsink temperature over a year of history to spot clogged filters or a failing fan.
- Change the speed reference of a pump or fan remotely without going to the panel.
- Check ramp times, frequency limits and motor data of every drive from ModbusCloud.
Installation
Connect the RJ45 interface of the drive to the RS485 port of the ModbusCloud Gateway, with termination at both ends of the bus.
Set the drive address and baud rate in P-36 and the parity in P-56.
Set P-12 to 3 for control over Modbus, or 4 to also send the ramp time.
In ModbusCloud, add a Modbus device with the same settings and import this template.
Check that status word, DC link voltage and heatsink temperature come in before you write a speed reference.
Things to watch for
The drive does not answer on the bus. What should I check?
Check the address and baud rate in P-36 and the parity in P-56 against ModbusCloud. Check the RJ45 wiring and the termination at both ends of the bus. Addresses run from 1 to 63.
Writing the command word or speed reference has no effect. Why?
The drive only takes commands over Modbus when P-12 is 3 or 4. Bit 0 of the command word must be 1 to run; bit 2 resets a fault. The speed reference is in 0.1 Hz and must lie between P-02 and P-01. Depending on P-15 a digital input can also block or override the bus.
Why does writing a parameter fail?
Some parameters, such as motor voltage, motor frequency, control source and input configuration, can only be changed when the drive is stopped. A parameter lock in P-38 or a password can also block writing. Stop the drive, check P-38 and write again.
The drive trips when the connection drops. Is that intended?
The timeout part of P-36 sets this. With 0 the drive keeps running on the last data; t settings trip after 30 ms to 3 s, r settings ramp the motor to a stop. Choose the behavior that is safe for the installation before you control the drive remotely.
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