Lenze EMF2131IB 6343201 CAN Bus Communication Module
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Product Information
The Lenze 6343201 EMF2131IB is a system bus communication module designed for the Lenze Global Drive family, including 8200 vector, 8200 motec, and 9300 series frequency inverters. Operating on the CAN 2.0B standard under ISO 11898, this plug-in function module enables fast process data transfer and master-slave cross-communication across distributed drive architectures. Built to fit directly into the host inverter standardized Function Module Interface (FIF) slot, the unit coordinates distributed motion control and drive synchronization in material handling, packaging machinery, automotive manufacturing lines, and textile processing equipment.
Physical integration is handled via a 5-pole pluggable screw terminal block providing connections for CANH, CANL, and CAN_GND signal lines. Network setup requires setting the node address between 1 and 63 and selecting a transmission speed from 20 kbit/s to 1000 kbit/s, which can be configured via onboard hardware DIP switches or drive parameters using Lenze Global Drive Control (GDC) software or a Keypad XT (EMF2102IB) operator panel. An integrated, switchable 120 Ohm bus termination resistor is built into the card to terminate physical network endpoints. When commissioning a replacement unit, mirroring the physical DIP switch positions for address, baud rate, and bus termination allows rapid restoration of communication, supported by technical expertise from ABC Industrial Parts.
Front-panel diagnostic indicators provide instant visual feedback on network activity and unit health through green CAN-RUN and red CAN-ERR LEDs. A solid green CAN-RUN status indicates operational participation in bus communication, while the CAN-ERR LED highlights bus-off conditions, frame errors, baud rate mismatches, or missing termination. Host drive system error registers and GDC online monitoring identify specific fault conditions, including CE0 for bus-off errors or H10 for FIF interface faults. If an H10 fault or solid red power-up LED persists after turning off power and reseating the card in its slot, internal board-level failure has occurred. Under these conditions, direct repair or a tested replacement module from ABC Industrial Parts offers a swift return to production.
Technical Specifications
| Manufacturer | Lenze |
| Part number | 6343201 |
| Model / Type | EMF2131IB |
| Component type | Communication Module |
| Communication interface | System Bus (CAN 2.0B / ISO 11898) |
| Baud rate range | 20 kbit/s to 1000 kbit/s |
| Node address range | 1 to 63 |
| Bus termination resistor | 120 Ohm (Integrated, switchable) |
| Fieldbus connector | 5-pole pluggable screw terminal |
| Host interface slot | Function Module Interface (FIF) |
Programming and Configuration
The Lenze EMF2131IB module accommodates both physical hardware switch settings and software parameterization through the host drive. Onboard DIP switches allow field technicians to set the node address between 1 and 63 and adjust the transmission speed from 20 kbit/s to 1000 kbit/s without needing external software tools during initial hardware installation.
For precise network integration and extended diagnostics, parameters can be modified through Lenze Global Drive Control (GDC) software or a Keypad XT (EMF2102IB) panel connected to the inverter. Drive parameters control process data objects (PDOs), monitoring time limits, and communication response behaviors to maintain synchronicity across multi-axis drive arrangements.
Communication and System Integration
Designed for high-speed master-slave and drive-to-drive architectures, the EMF2131IB uses the CAN 2.0B protocol according to ISO 11898 standards. It facilitates direct data exchange between inverters and central controllers, minimizing signal delays in coordinated drive applications.
Physical wiring connects to a front 5-pole pluggable screw terminal block supporting CANH, CANL, and CAN_GND lines. Line termination at physical bus ends is managed by an integrated 120 Ohm resistor that is engaged via an onboard switch, eliminating the need for external terminating resistors on the network line.
Diagnostics and Status Indication
Diagnostic evaluation for the EMF2131IB is performed through front-panel status LEDs, drive-level error registers, and software interfaces. Two dedicated LEDs, CAN-RUN and CAN-ERR, provide real-time status visibility regarding operational states, initialization phases, and bus error conditions.
System bus error registers logged by the host drive can be read using Global Drive Control (GDC) software or a Keypad XT operator module. These tools allow maintenance personnel to pinpoint communication timeouts, buffer overflows, and line interference issues during active operation.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| CAN-RUN | Green - Solid / Flashing | Solid ON = Module operational and participating in CAN communication; Flashing = Pre-operational or initialization state |
| CAN-ERR | Red - Solid / Flashing | ON / Flashing = Bus-Off state, frame errors, baud rate mismatch, or missing bus termination; Solid RED on power-up indicates internal hardware failure |
Replacement and Spare Part Considerations
Before replacing an EMF2131IB module, disconnect all main supply power to the host frequency inverter. Carefully pull the existing module straight out of the Function Module Interface (FIF) slot and inspect the connector pins inside the slot for damage or debris before inserting the replacement card.
When preparing the replacement unit, replicate the DIP switch configuration from the original board. Ensure the node address (1 to 63), baud rate (20 to 1000 kbit/s), and internal 120 Ohm bus termination switch match the previous installation exactly to prevent network communication faults upon power-up.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| CE0 | CAN-Bus-Off Error | System bus communication interrupted; module reached Bus-Off state due to excessive CAN transmission/reception errors. | Incorrect baud rate, short circuit or open circuit on CAN_H/CAN_L lines, improper or missing termination resistors, high electrical interference. | Check CAN wiring, shield grounding, baud rate DIP switch settings, and ensure 120 Ohm termination resistors are enabled at both physical ends of the bus line. |
| CE1 | CAN Time-Out Error | System bus telegram timeout; process data objects (PDOs) not received within the configured monitoring time. | Master controller stopped sending telegrams, CAN master offline, cable broken, cycle time mismatch. | Verify master PLC status, check communication timing parameters, check bus cable continuity. |
| CE2 | CAN Receive Buffer Overflow | Module receive buffer exceeded due to high message density on the CAN bus. | Excessive bus traffic, wrong acceptance mask configuration, process data transmission cycle too short. | Reduce system bus traffic, increase transmission interval of CAN nodes, verify identifier filter configuration. |
| CE3 | CAN Transmit Buffer Overflow | Module transmit buffer full; messages cannot be placed onto the CAN bus. | Bus traffic overload, network disconnected, no acknowledgement received from other bus nodes. | Check physical bus connection, ensure at least one active receiving node is present on the network. |
| CE4 | CAN Bus Warning Limit | CAN error counter exceeded warning threshold; bus performance degraded. | Loose connection, marginal baud rate mismatch, noise interference on signal lines. | Inspect line shielding, terminal tightness, line topology, and stub lengths. |
| H10 | FIF Fault / Hardware Fault | Function module in FIF slot not detected, unreadable, or communication fault between drive and module. | Module improper insertion, bent pins, hardware board error on EMF2131IB. | Reseat module in FIF slot with power off. If fault persists on power-up, module internal hardware failure has occurred; replace module. |
Frequently Asked Questions
Which drive series support the Lenze EMF2131IB communication module?
The EMF2131IB module connects to Lenze 8200 vector, 8200 motec, and 9300 series frequency inverters equipped with a Function Module Interface (FIF) slot.
How are the node address and baud rate set on the EMF2131IB?
Node addresses (1 to 63) and baud rates (20 to 1000 kbit/s) can be selected via hardware DIP switches on the module or configured in drive software parameters using Lenze Global Drive Control (GDC) or a Keypad XT panel.
Does the EMF2131IB require an external CAN bus termination resistor?
No, the module features an integrated 120 Ohm termination resistor that can be activated using an onboard switch when the card is installed at a network endpoint.
What does a solid red CAN-ERR LED on power-up indicate?
A solid red CAN-ERR LED upon initial power-up indicates an internal hardware failure on the EMF2131IB module.
How should an H10 fault code be handled?
An H10 fault indicates a connection or detection issue in the FIF slot. Turn off power, inspect the connector pins, and reseat the module. If the error continues after restoring power, the module has suffered internal hardware damage and must be replaced.
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