Lenze EVD4902-E DC Drive 4900 Speed Controller
Het item werd toegevoegd aan uw offerteaanvraag
Product Information
The Lenze EVD4902-E is an analog DC speed controller from the Lenze 4900 Series, engineered for precise speed regulation of permanent magnet and shunt-wound DC motors. Operating as a compact speed control unit, it supplies up to 4 A of continuous armature current and up to 1 A of field current, generating a maximum armature output voltage of 320 V DC. The unit accommodates flexible power sources, accepting AC supply voltages from 230 V AC to 460 V AC across line frequencies ranging from 45 to 65 Hz. This wide voltage capability makes the EVD4902-E an adaptable solution for low-power industrial machinery, including material handling, packaging, textile equipment, and general automation systems.
Interfacing with external control loops is achieved through analog setpoint inputs that accept 0 to +10 V DC or -10 V to +10 V DC setpoint signals. The controller supports two feedback modes: direct DC tachogenerator input and armature voltage IxR compensation. Commissioning a replacement unit does not require software tools or programming interfaces; operating parameters such as maximum speed, minimum speed, peak current limits, acceleration and deceleration ramp rates, and IxR compensation are adjusted directly using onboard potentiometers and PCB selection jumpers. When preparing a spare module, copying these hardware settings from the original drive ensures smooth integration, with technical guidance from ABC Industrial Parts available to assist with setup verification.
Real-time diagnostic monitoring is handled via dual LED status indicators and a dedicated TRIP fault relay output. A solid green Ready / Operation LED confirms that line power is active and internal control circuits are functional, while a solid red Fault / TRIP LED signals a drive shutdown resulting from overcurrent, overvoltage, motor thermal overload, or feedback loss. The integrated fault relay contact provides remote trip signaling to upstream control equipment. First-line troubleshooting involves checking input line voltage, control setpoint wiring, and tachogenerator polarity. If internal circuit issues occur, board-level repairs or a bench-tested replacement unit through ABC Industrial Parts provide an efficient path to restoring production line operation.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EVD4902-E |
| Model / Type | DC Drive 4900 |
| Product Family | 4900 Series |
| Component Type | DC Speed Controller |
| Rated Armature Current | 4 A |
| Max Field Current | 1 A |
| Supply Voltage Range | 230 - 460 V AC |
| Supply Frequency | 45 - 65 Hz |
| Max Armature Output Voltage | 320 V DC |
| Analog Setpoint Input Range | 0 to +10 V DC / -10 to +10 V DC |
| Control Feedback Methods | DC Tachogenerator / Armature Voltage (IxR) |
Programming and Configuration
The Lenze EVD4902-E operates entirely through analog hardware control, eliminating the need for dedicated software tools, digital parameter cards, or serial interface software. All operational tuning is completed directly on the device using accessible potentiometers and PCB selection jumpers.
Hardware potentiometers enable precise adjustment of critical motor operating variables, including minimum and maximum speed limits, armature peak current limiting, acceleration and deceleration ramp times, and IxR compensation. Jumpers are positioned on the printed circuit board to select between tachogenerator or armature voltage feedback methods and to configure the setpoint voltage range for 0 to +10 V DC or -10 V to +10 V DC input signals.
Communication and System Integration
System integration for the EVD4902-E centers on standard industrial analog connections. The controller accepts analog setpoint inputs of 0 to +10 V DC for single-direction speed commands or -10 V to +10 V DC for bi-directional control, facilitating interface with PLC analog modules or external speed potentiometers.
In addition to command setpoints, the controller integrates terminal connections for a DC tachogenerator for precise speed feedback loops. It also includes an integrated TRIP relay output contact, enabling main machine controllers to monitor system trip conditions continuously and take protective action when a drive trip occurs.
Diagnostics and Status Indication
Operational state monitoring on the Lenze EVD4902-E is managed via front-panel LED indicators and a TRIP fault relay contact. The green Ready / Operation LED confirms that supply voltage is connected and internal control electronics are operating correctly. The red Fault / TRIP LED indicates a protective shutdown.
The Fault / TRIP indicator activates when the drive detects overcurrent, overvoltage, motor thermal overload, or loss of tachogenerator feedback. When a trip state is triggered, the fault relay changes state, sending an immediate signal to connected supervision systems.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Ready / Operation | Green - Solid | Supply voltage is present and control circuit is operational. |
| Fault / TRIP | Red - Solid | Drive trip caused by overcurrent, overvoltage, motor thermal overload, or tacho feedback loss. |
Replacement and Spare Part Considerations
When replacing an existing Lenze EVD4902-E unit, ensure that the incoming spare matches the physical and electrical parameters of the original controller, specifically verifying the 4 A armature current and 1 A field current ratings. Because drive configuration is managed entirely through analog hardware, settings must be cloned manually from the original board to the replacement.
Before applying power to a replacement drive, replicate all potentiometer positions, including ramp rates, current limits, min/max speed settings, and IxR compensation. Ensure all PCB jumpers match the original configuration for feedback selection (armature voltage or DC tachogenerator) and setpoint voltage range.
Prior to initial startup, verify control wiring and double-check tachogenerator feedback polarity. Incorrect tachogenerator polarity can cause overspeed conditions upon power-up, making careful wiring checks essential to prevent drive trips and hardware damage.
Frequently Asked Questions
Does the Lenze EVD4902-E require software for setup?
No, the EVD4902-E is configured entirely using hardware potentiometers and PCB jumpers, requiring no external programming software or digital tools.
What speed feedback methods are supported by the Lenze EVD4902-E?
The drive supports two speed feedback methods: armature voltage feedback with IxR compensation and direct DC tachogenerator feedback.
What supply voltage range does the EVD4902-E accept?
The controller operates on AC supply voltages from 230 V AC to 460 V AC across line frequencies of 45 Hz to 65 Hz.
What do the status LEDs on the drive indicate?
A solid green Ready / Operation LED indicates present supply voltage and active control circuitry. A solid red Fault / TRIP LED indicates a trip condition due to overcurrent, overvoltage, thermal overload, or tachogenerator loss.
How does the drive communicate faults to a PLC?
The EVD4902-E includes a dedicated TRIP relay output contact that signals fault status directly to higher-level automation controllers.
Take advantage of our exchange formula
A defective product does not have to be worthless. At ABC Industrial Parts, you can hand in defective products and immediately benefit from a discount on your new purchase. This is a smart way to save money while contributing to a circular economy.
Play it safe with our warranty conditions
Industrial plants prefer to keep running invariably, no matter what. Therefore, it is essential that you can rely on high-quality products and/or sustainable repairs. With our warranty conditions, you can count on certainty, whether you choose new, used or repaired products.
Data backup and recovery
Have you lost valuable parameters or data due to a malfunction while the manufacturer no longer provides support? At ABC Industrial Parts, we help you secure this data, both for common and specific products.
Specific firmware and hardware versions
If you are working with specific hardware or firmware versions that are no longer available from the manufacturer, ABC Industrial Parts is your partner. When making your enquiry, clearly state which versions you need, we will then look at the possibilities of supplying those versions, so that your installations continue to function optimally.
Disclaimer:
We are not an authorised distributor of Lenze.
Product photos are for illustration purposes only and may differ from the actual product delivered.
Some of the content on this page was created with the help of AI. While we strive to provide accurate and up-to-date information, errors may occur.