Lenze 2008E2 PCB Board 321941 DC Motor Controller
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Product Information
The Lenze 2008E2 (PCB Board 321941) is an open-frame DC motor controller belonging to the Lenze 2000 Series DC Speed Controllers family. Designed for driving small permanent magnet and shunt-wound DC motors, this board operates on a single-phase 230 V AC mains supply and delivers an adjustable armature output voltage ranging from 0 to 180 V DC with a continuous output current rating of 2 A. In addition to the main armature supply, the controller features a dedicated 200 V DC fixed field supply output required for shunt-wound motor configurations. Its compact open-frame printed circuit board design allows straightforward installation inside electrical cabinets, offering reliable DC motor speed regulation for material handling conveyors, labeling machinery, and light-duty machine tools.
Connecting the drive into a control system is managed via standard screw terminal connections. Speed setpoint signals are accepted either from an external 10k Ohm potentiometer or an isolated 0 to 10 V DC analog voltage controller. Because the board features a pure analog hardware design, putting a replacement Lenze 2008E2 unit into service requires no software tools, programming cables, or digital parameter transfers. Commissioning a replacement unit involves making hardware calibration adjustments using the on-board trimmer potentiometers to set the minimum speed (nmin), maximum speed (nmax), current limit (I_max), acceleration and deceleration ramp times, and IxR load compensation. Expert support from ABC Industrial Parts can assist in sourcing fully tested spare units ready for direct cabinet retrofits.
Diagnostic verification on the unit is performed using standard multimeter measurements directly across its physical terminal contacts. Technicians can check operational status by measuring the 230 V AC mains input voltage, verifying the 0 to 180 V DC variable armature output, confirming the 200 V DC field voltage output, and evaluating the incoming 0 to 10 V DC analog setpoint signal. The integrated IxR compensation automatically maintains smooth motor speed under fluctuating dynamic loads by compensating for internal armature resistance losses. When voltage checks confirm that power supply inputs and setpoint signals are correct but the output fails to regulate, internal component failures are present on the printed circuit board. Because board-level hardware components are not field-serviceable, swapping the faulty module for a tested replacement board through ABC Industrial Parts is the most effective approach to restore machine operation.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 2008E2 |
| Model / Type | PCB Board 321941 |
| Product Family | 2000 Series DC Speed Controllers |
| Component Type | DC Motor Controller |
| Form Factor | Open-frame PCB |
| Supply Voltage | 230 V AC |
| Armature Output Voltage | 0 - 180 V DC |
| Continuous Output Current | 2 A |
| Field Output Voltage | 200 V DC |
| Control Method | Armature voltage control with IxR compensation |
| Setpoint Speed Input | 0 - 10 V DC or 10k Ohm potentiometer |
Diagnostics and Status Indication
Diagnostic troubleshooting for the Lenze 2008E2 relies on direct multimeter voltage measurements across the screw terminal strip. Key diagnostic check points include measuring for proper single-phase 230 V AC mains input power, checking the incoming 0 to 10 V DC analog setpoint signal or 10k Ohm potentiometer voltage, and verifying the presence of the fixed 200 V DC field supply output when operating shunt-wound motors.
Variable armature output speed control is tested by measuring voltage across the armature terminals while adjusting the setpoint source throughout its 0 to 180 V DC output range. If mains power and speed reference signals are present but the armature voltage remains absent or unresponsive to trimmer potentiometer adjustments, an internal board-level electrical fault has occurred.
Replacement and Spare Part Considerations
Replacing a Lenze 2008E2 (PCB Board 321941) requires verifying motor compatibility and duplicating the hardware trimmer potentiometer settings from the original drive. The module is engineered to control permanent magnet DC motors rated up to 180 V DC at 2 A continuous current, or shunt-wound DC motors utilizing a 200 V DC field circuit. Verify that the incoming supply line provides the correct 230 V AC voltage before restoring system power.
Because settings on this analog drive are set via hardware trimmers rather than digital firmware parameter lists, technicians must transfer or recalibrate physical trimmer positions during installation. Adjust on-board potentiometers for minimum speed (nmin), maximum speed (nmax), current limit (I_max), acceleration and deceleration ramp times, and IxR compensation to match the attached motor and dynamic mechanical load. Conducting voltage and current checks during initial start-up ensures correct current limiting and motor protection.
Frequently Asked Questions
What motors are compatible with the Lenze 2008E2 DC motor controller?
The Lenze 2008E2 is compatible with permanent magnet DC motors rated up to 180 V DC and 2 A continuous output current, as well as shunt-wound DC motors requiring a 200 V DC field supply.
Is software required to program or commission the Lenze 2008E2 controller board?
No software or programming cable is required. The Lenze 2008E2 features a pure analog hardware design that is commissioned directly using on-board trimmer potentiometers.
How is the speed reference signal provided to the 2008E2 board?
Speed setpoints can be provided using either an external 10k Ohm potentiometer or a 0 to 10 V DC analog voltage input signal connected to the terminal strip.
How do you adjust operating parameters on the Lenze 2008E2 (PCB Board 321941)?
Operational settings are adjusted via hardware trimmers on the board, including controls for minimum speed (nmin), maximum speed (nmax), current limit (I_max), acceleration/deceleration ramp times, and IxR load compensation.
How can I troubleshoot a non-responsive Lenze 2008E2 controller?
Diagnostic checks are conducted with a multimeter. Measure the 230 V AC mains input voltage, check for 200 V DC across the field terminals, verify the 0 to 10 V DC speed reference input, and check for 0 to 180 V DC output across the armature terminals.
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Specific firmware and hardware versions
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Disclaimer:
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