Eaton PowerXL DE1

Name: Eaton PowerXL DE1
Brand: Eaton
SKU: 4c043600-8208-498d-b21d-827e9bc91c1c

Variable speed starter with speed control, motor current and drive settings.

The Eaton PowerXL DE1 is a variable speed starter that sets the speed of three phase motors in pumps, fans and conveyors with little configuration. This Modbus RTU template reads status, faults, frequency, motor current, DC link voltage and heatsink temperature, and lets you start, stop and set the speed and drive settings from ModbusCloud.

Protocol: Modbus RTU
Connection: RS485, 115200 baud
Registers: 72, read and write

Brand: Eaton
Key readings: Output frequency · Motor current · DC link voltage · Heatsink temperature · Fault number · Run time
Available commands: Command word · Speed reference · Ramp times · Drive settings
Compatible models: PowerXL DE1 (DE1-12..., DE1-34...) · PowerXL DE11 (DE11-12..., DE11-34...)
Last updated: 19 October 2026

Registers (72)

72 read, 56 write

Name	Unit	Access
Status and Fault Word		Read
Actual Speed	Hz	Read
Motor Current	A	Read
DC Link Voltage	V	Read
Heatsink Temperature	°C	Read
Analog Input 1	%	Read
Digital Inputs		Read
Run Time Hours	h	Read
Run Time Min Sec		Read
Last Fault		Read
Fieldbus Command		Read and write
Speed Reference	Hz	Read and write
Starter Type Code		Read
Starter Power		Read
Voltage Range	V	Read
Control Software Version		Read
Power Software Version		Read
Starter Recognition		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
Password		Read and write
Digital Input Configuration		Read and write
AI1 Signal Range		Read and write
AI1 Gain		Read and write
AI1 Invert		Read and write
DI3 Logic		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
Digital Reference Reset Mode		Read and write
DC Brake		Read and write
DC Brake Time at Stop	s	Read and write
DC Brake Voltage	%	Read and write
DC Brake Frequency at Stop	Hz	Read and write
Switching Frequency		Read and write
Start Mode		Read and write
Overvoltage Control		Read and write
Auto Thermal Management		Read and write
Thermal Memory Enable		Read and write
PDP Address		Read and write
RS485 Baud Rate		Read and write
Modbus Timeout		Read and write
Parameter Set		Read and write
Password Level 2		Read and write
Parameter Lock		Read and write
Action on Communication Loss		Read and write
Parameter Access		Read and write
Skip Band 1		Read and write
Skip Frequency 1		Read and write
AI1 Offset		Read and write
Fire Mode Function		Read and write
Motor Identification		Read and write
Modbus Address		Read and write
Modbus Data Format		Read and write
CAN Baud Rate		Read and write
Relay Output 1 Function		Read and write
Relay Output 1 Upper Limit		Read and write
Relay Output 1 Hysteresis		Read and write
Relay Output 1 On Delay		Read and write
TCP Enable Service		Read and write
TCP Security Timeout		Read and write

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Use cases

Show frequency, motor current and fault state of every starter on one dashboard for a pump or ventilation installation.
Get an alert when the fault bit comes on and see the fault number, such as overcurrent or overtemperature.
Follow the heatsink temperature over a year of history to spot a blocked cabinet fan or a dirty filter.
Change the speed of a fan or pump remotely, without going to the cabinet.
Check ramp times, frequency limits and motor data of every starter from ModbusCloud.

Installation

Connect pins 7 (A) and 8 (B) of the RJ45 port to the RS485 port of the ModbusCloud Gateway, with a 120 ohm termination at both ends of the bus.
Set the Modbus address in P-47, the baud rate in P-35 and parity and stop bits in P-48.
Set P-12 to 3 for control over Modbus and wire an enable to DI1 or DI2.
Add a Modbus device in ModbusCloud with the same settings and import this template.
Check that the status word, DC link voltage and heatsink temperature come in before you write a speed.

Things to watch for

The starter does not answer on the bus. What should I check?

Compare the address in P-47, the baud rate in P-35 and the parity and stop bits in P-48 with the settings in ModbusCloud. The factory baud rate is 115.2 kbit/s. Check the A and B wires on pins 7 and 8 of the RJ45 plug and the termination at both ends of the bus.

Writing the command word or speed reference has no effect. Why?

The starter only accepts commands over Modbus when P-12 is 3, and it still needs an enable signal on DI1 or DI2. 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.

Why does writing a setting fail?

Settings such as frequency limits, motor data and the input configuration can only be changed while the starter is stopped. A parameter lock in P-39 or P-41 also blocks writing. Stop the motor, check P-39 and P-41 and write again.

The starter stops or trips when the connection drops. Is that intended?

P-36 sets the time after a communication loss and P-40 the reaction: continue, warn, ramp to stop, coast or trip. With P-36 at 0 nothing happens. Choose what is safe for the installation before you control the starter remotely.

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