Lenze 347924 4902BB.1A 4900 Series Display Module
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Product Information
The Lenze 347924 (model 4902BB.1A) is a front-mounted operator display panel designed for local interface and parameter adjustment on Lenze 4900 Series DC motor controllers and Lenze 4800 Series drive regulators. Equipped with a blue backlit digital LCD screen and tactile keypad buttons labeled PRG, A, and SH, this compact control unit allows maintenance personnel and technicians to manually configure setpoints and adjust drive operational settings directly at the machine panel.
Featuring a tool-free direct board plugin interface, the unit unclips and clips directly onto the front slot header of the host drive without needing external cabling. Drive operating parameters and setpoints remain stored in the host controller's internal non-volatile EEPROM memory, allowing a replacement module to be installed without any parameter transfer or reprogramming. Sourcing a fully tested spare through ABC Industrial Parts ensures immediate hardware compatibility for legacy packaging, textile, printing, and material handling equipment.
During routine operation and troubleshooting, the display provides real-time monitoring of actual drive values, including motor armature current, operating speed, and tacho feedback signals. Integrated multicolor status LEDs give immediate visual feedback on the drive's operational state, while the digital LCD presents direct numerical fault codes when error conditions occur. If physical display damage or internal component failure prevents correct indication, replacing the unit via ABC Industrial Parts offers a quick route back to full operational status.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 347924 |
| Model / Type | 4902BB.1A |
| Component Type | Display Module |
| Product Family | 4900 Series |
| Display Screen Type | Blue Backlit LCD |
| Control Elements | Keypad Buttons (PRG, A, SH) |
| Status Indicators | Multicolor Status LEDs |
| Interface Type | Direct Board Plugin Interface |
| Mounting Style | Front Slot Header Plug-in |
| Parameter Retention | Host Non-Volatile EEPROM Memory |
Diagnostics and Status Indication
The Lenze 347924 display module delivers localized diagnostic feedback using its illuminated digital LCD screen and multicolor status LEDs. In the event of a drive trip or fault state, the panel displays direct numerical fault codes, giving technicians rapid insight into operational issues without requiring external diagnostic software.
Continuous visual monitoring is supported during normal drive operation. Technical personnel can observe key live parameters, such as motor armature current, operating speed, and tacho feedback signals, while the multicolor LEDs provide clear status indications corresponding to active drive modes and fault trips.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Multicolor LEDs | Multicolor - Illuminated | Indicates drive status, operating state (e.g., ready, active, fault/trip) |
Replacement and Spare Part Considerations
Replacing a damaged Lenze 347924 (4902BB.1A) module is a straightforward physical swap. The unit attaches directly to the front slot header connector on Lenze 4900 series DC motor controllers and 4800 series drive regulators, eliminating the need for wiring harnesses, specialized tools, or mechanical disassembly.
Because operating setpoints and drive parameters are preserved inside the host drive controller's internal EEPROM memory, swapping the keypad display requires no software transfer or parameter entry. The spare module functions immediately upon connection, reading drive data directly from the host board.
Prior to mounting a replacement module, inspect the front slot header pins on the host controller to confirm they are clean and free of physical deformation. Firmly seating the display module onto the board header ensures proper electrical contact and continuous parameter display.
Frequently Asked Questions
Is parameter reprogramming required when replacing the Lenze 347924 display?
No. Drive parameters and setpoint configurations are stored in the host drive's internal non-volatile EEPROM memory, so replacing the display module requires zero parameter entry or software reprogramming.
Which drives are compatible with the 4902BB.1A display module?
The module is compatible with Lenze 4900 Series DC motor controllers and Lenze 4800 Series drive regulators.
How is the display unit attached to the controller?
The module plugs directly onto the front slot header of the host drive using a board plugin connection, allowing tool-free installation and removal.
How are drive status and fault conditions communicated by the display?
The panel uses multicolor status LEDs to show operational states and presents direct numerical fault codes on the blue backlit LCD screen when error conditions occur.
What live drive values can be read on the LCD screen?
The screen allows live monitoring of operational parameters including motor armature current, speed, and tacho feedback signals.
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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.
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