Eaton VFD Drives PowerXL DM1 general purpose series

Eaton PowerXL DM1 – efficient technology in a compact design

The DM1, the latest addition to the PowerXL family, is a micro inverter that is especially rugged and easy to use. Designed for use in pumps, fans and conveyor belts as well as in general machine-building applications, the DM1 expands Eaton’s product range in a targeted manner. In this way, customers can always select the right product, from simple to complex applications – including the production of standardized systems and more.



Outstanding technology
Machine building, material handling systems and building services engineering frequently involve the driving of pumps, fans, conveyor belts or compressors. As such, it is particularly important that the applied technologies are both easy to use and energy-efficient. The PowerXL DM1 variable frequency drive has been specially developed for such applications and stands out for its durability, availability and universal functionality.

Rugged design
All the devices are highly resistant to heat and deliver full performance at ambient temperatures of up to 50 °C (IP20 and IP21). Moreover, their 100 kA short-circuitproof output is currently best-in-class on the market. Exceptionally durable fans and an adjustable fan controller ensure improved reliability. The rugged design of the devices is also evident in their high degree of protection: The models with a power rating of up to 22 kW are available with IP20 and IP21.

Technology that makes work easier
Thanks to the self-explanatory type codes, auto-tune functions, userfriendly configuration with only 14 basic parameters, as well as fast project planning and commissioning, the PowerXL variable frequency drives help to minimize the costs of planning, installation and technical support. They can be programmed using a keypad and an external LCD display, or via a PC. In addition, parameter settings can be quickly copied to other devices using the external keypad.

Integrated potentiometer
The DM1 is available in two versions: The standard version comes without keypad and STO function but with Modbus RTU on board. The Pro version features a 7-segment keypad, an STO (SIL2, PLd, Cat.3) function, Modbus TCP and Bacnet MSTP / IP connections, Bluetooth, and an integrated web server. Both versions are equipped with a connection to the DG1 remote keypad, which displays all parameters in clear and simple English. The Pro version also has an internal setpoint potentiometer for entering setpoints directly and easily on the device. The operation of the devices does not require any external wiring.

Tough in harsh environments: IP21 degree of protection and enhanced PCB protection
The DM1 devices offer enhanced PCB protection. As a result, the drives are able to withstand harsh environmental conditions, including high levels of humidity and aggressive ambient air. Thanks to their degree of protection (IP21), the devices can also be used in NEMA1 installations.

Optimized configuration
The configuration of the variable frequency drives is quick and easy, thanks to the built-in LCD display.

Eaton PowerXL DM1 – a compact and versatile drive for demanding applications

The DM1 variable frequency drive is the perfect match for demanding variablespeed and torque-dependent applications. What makes the DM1 stand out is its power range up to 22 kW, its compact size and its high level of functionality. A dual rating is available to adapt the device to the needs of each application: 150 % overload for machine applications, and 110 % for pumps and fans. If an application only requires an overload of 110 %, a DM1 originally configured for an overcurrent of 150 % can also be used to drive a motor with the next higher rating.

- The special PCB coating protects against dust, which makes the DM1 suitable for use in drive systems for vibrating screens in cement machines, for example.
- Thanks to their cold-weather function, the devices can be safely used in cold environments, for example in outdoor applications.
- The DM1 is the ideal choice for all types of fan drives and offers special functions for HVAC applications.



Ready for all eventualities
Users have the option to choose from four standard application types with specially tailored parameter sets. The devices can thus be optimally tailored to the requirements at hand – any parameters and functions that are not required will simply be hidden.

Operational straight out of the box
Commissioning starts automatically when the device is switched on for the first time. During this process, users will be prompted to enter the basic application data, such as ramp times, motor specifications, the application type, the menu language and the time of day. The data in question are the same for all PowerXL drives.

Comprehensive functionality
The standard version of the DM1 Pro series covers the power range up to 22 kW and offers a wide range of functions, including Modbus RTU, Modbus TCP, Ethernet IP and Bacnet MSTP protocols, an integrated EMC filter (C2 for public grids) and a braking transistor.

The system includes the following four standard application types:
- standard
- HVAC
- pumps
- multi-purpose
The variable frequency drives can be operated using both sensorless vector control (SLV) and V/f control. Depending on the configuration, the two operating modes support the rated overload operation of the motor at 150 % and 110 %, respectively.

PM motors
In applications where maximum efficiency is required, such as in air-conditioning units or pumps, PM motors are the ideal choice. The DM1 is the right option for these applications and features optimized algorithms for SPM and IPM motors to ensure the best possible result for each motor type. The comprehensive PI controller for the speed control loop enables the fine-tuning of almost any application.

Powerful even at extreme overloads
The DM1 variable frequency drive is particularly strong in the overload range. With sensorless vector control (SLV), the torque can be temporarily increased to up to 200 %, making the DM1 ideal for applications with extreme overload requirements.

Ready for connection thanks to the built-in EMC filter
All DM1 devices come with a built-in EMC filter (category C2) for connection to the public grid in accordance with IEC/EN 61800-3. This eliminates the need for external components with additional wiring and space requirements inside the control cabinet.

No derating up to 50 °C
All DM1 series devices with IP20/IP21 degree of protection can be operated at ambient temperatures of up to 50 °C without derating, meaning they can operate at their full rated current. This enables machine builders and system integrators to achieve significant cost savings if no higher ambient temperatures are to be expected: There is no need to invest in additional ventilation, while the option to install the drives side-by-side saves space and costs because smaller control cabinets can be used.

Eaton PowerXL DM1 power management

Energy saving function
The DM1’s active energy control function minimizes energy losses through a patented process that dynamically adjusts the V/f curve to optimize efficiency. Compared to other outof- the-box solutions, this enables energy savings of 2-10 %.

Energy cost calculator
The integrated energy cost calculator facilitates a direct comparison to conventional contactor-control systems. Once the energy costs of the local utility have been entered, it becomes immediately apparent how much money the operation of the DM1 has already saved. This makes it possible to keep operating costs (OPEX) under control at all times.

PI controller

Integrated cascade control
The DM1 is equipped with a userconfigurable PI controller with extensive functionality. Setpoints, actual values and feedback can be changed during operation, in line with the requirements of the application, in order to maximize productivity and product quality without the need for any additional external controllers.

Adjustable display of process variables
In addition to percentage values and frequencies, process variables such as the pressure, flow rate, production speed or any other data relating to the application can be displayed directly. This eliminates complicated and error-prone conversions of technical variables such as frequencies into application-specific values.

Automatic sleep mode
If the pressure of a pump falls below a preset value, it can be automatically put into sleep mode to prevent it from idling. This reduces wear as well as energy and other costs.

Pumps and fans

Multi-pump drives
For water/wastewater applications, different modes are available to control and regulate systems consisting of several pumps. Since the DM1 uses the built-in PI controller for level and pressure control, there is no need for any external controller. The DM1 can control one or more master or back-up drives, while the real-time clock can also be used for runtime compensation of all pumps. This level of versatility not only reduces equipment costs but also increases system availability and efficiency.

Cold weather mode
The DM1 is also suitable for use in extreme weather conditions. It is heat-resistant up to 50 °C and comes with a special cold weather mode that allows it to operate at temperatures as low as -30 °C without the need for any external heating systems. As such, the DM1 is the perfect choice for outdoor applications involving extremely low temperatures.

Fire mode
If used for fire protection in buildings or in sensitive structures such as tunnels, the DM1 can be operated in fire mode. In this mode, internal safety features that would normally shut down the device are disabled to ensure that fire pumps and smoke ventilation systems remain operational. The fire mode can be configured using a comprehensive range of options, including fixed setpoints, switchable setpoint inputs and fail-safe activation.

Manual/automatic operation
Operators can switch between manual and automatic operation by means of a control command or via the keypad, enabling them to intervene in the control system at any time.

Connections made easy

Control terminals for all analog and digital connections
The basic version of the DM1 features a comprehensive range of analog and digital I/Os, including:
- 1 analog input
- 1 analog output
- 4 digital inputs
- 1 digital output
- 2 relays, including 1 changeover relay
- STO (Safe Torque off), SIL2, PLd, Cat.3
With safe torque off (STO), the Pro version of the DM1 provides the most basic drive integrated safety function. This function not only ensures that the motor will remain torque free when necessary, but also prevents accidental starting, for simple and cost-effective compliance with the EU’s Machinery Directive.

Can be expanded as required

The DM1 comes with a slot for expansion cards.
To keep the size of the standard device to a minimum, all options are flanged externally. At present, the DM1 supports the same network cards as the DG1:
- Profibus
- CANopen
- Device Net
- Profinet is currently in preparation
Additional expansion cards from the DG1 range will follow (I/O expansions).

A real knack for communication

Comprehensive on-board interfaces and protocols
Constantly growing communication requirements present machine builders and system integrators with major challenges. That's why the DM1 comes with the Modbus RTU, Modbus TCP, Ethernet IP and BACnet MSTP protocols as standard. As a result, the devices can be networked immediately without the need for any additional hardware, for smooth integration into existing communication networks. By means of option cards, the DM1 can also be expanded with the Profibus, CANopen and DeviceNet protocols for the North American market, as well as with a WLAN or GSM connection.

In addition to a Bluetooth connection, the DM1 Pro also features an integrated web server. Thanks to the web server, configuring the device couldn’t easier. The handling is almost identical to that of the inControl software, which can also be used for communication with the DM1 Standard. Remote control and maintenance can thus be easily implemented via any approved IP connection. It goes without saying that the DM1 also comes with IP address control to block any unauthorized access.

Motor and system protection

Flying start
Thanks to its motor pick-up function, the DM1 can "catch" spinning motors that were driven by a load before the drive itself was operational. This so-called flying start function catches the motor at its current speed and then brings it to the selected setpoint, which minimizes downtime during operation.

Skip frequencies
To prevent mechanical resonances in the application, up to three frequency bands can be hidden in which stationary operation will not be allowed. This reduces wear on the mechanical components and minimizes maintenance.

Motor identification run
Modern sensorless vector control requires additional data that go beyond those provided on the nameplate. This is why the DM1 comes with a built-in motor function for motor identification run, which makes it possible to easily and automatically detect any information that is missing from the nameplate without damaging the system in any way.

Electronic motor overload protection
The motor protection function monitors the motor temperature to protect it from overload. Using just one parameter, this makes it possible to set protection levels from CLASS 5 all the way to higher trip classes such as CLASS 40, which eliminates the need for external motor protection relays.
It is also possible to limit the motor current or to initiate additional actions including shutdown if certain adjustable signal thresholds are reached.

Stall prevention
An overload will cause the motor to stall, resulting in a dramatic drop in speed and possibly a standstill. The DM1 can detect this state before it occurs and will automatically take countermeasures to keep the motor and thus the application safely under control.

Password protection
Given the more than 700 adjustable parameters, trying to identify any values that have been inadvertently modified can be tedious without the help of a PC. For this reason, the parameters can be protected against unintentional or unauthorized changes by means of a password. While the parameters can still be viewed, they cannot be changed without knowledge of the password, which significantly increases operational safety.

Brake chopper
If a load with large inertia needs to be decelerated or supplies too much regenerative energy, the drive speed can be adjusted to the setpoint value using a brake chopper and an external brake resistor. Some application standards require the machine to be shut down for specified, usually very short periods, in which case a brake chopper is the ideal solution. The DM1 comes with a brake chopper as standard.

Flux brake
As an alternative to the brake chopper, a so-called flux brake is also available, which uses the motor's own magnetic field for electric braking and dissipates the braking power via the motor.