Lenze EMF2178IB CAN Address Module
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Product Information
The Lenze EMF2178IB is a CAN Address Module engineered for communication integration into Lenze 8200 vector frequency inverters and 9300 series servo drives. Belonging to the System Bus (CAN) product family, this specialized communication interface plugs directly into the host drive's dedicated Function Module Slot (FIF) without needing external mounting brackets or inter-module wiring. Physical network wiring connects via a pluggable screw terminal strip allocated for CAN-H, CAN-L, and CAN-GND lines, supporting drive-to-drive peer communication, axis synchronization, and system integration across packaging, material handling, textile, automotive assembly, and machine tool systems.
Commissioning a replacement EMF2178IB module relies on physical switch configuration rather than complex software setup on the option card itself. The module features front-facing DIP switches that allow manual selection of node addresses from 1 to 63 and network baud rates ranging from 10 kbit/s up to 1000 kbit/s. Capable of running both Lenze System Bus (CAN) layer 2 protocol and standard CANopen fieldbus, the interface links directly to Lenze Global Drive Control (GDC) software or drive operating keypads for drive parameterization. When installing a spare unit supplied by ABC Industrial Parts, matching the replacement module's DIP switch address and baud rate positions to those of the original unit allows the drive to resume network communications without altering central PLC or inverter programming.
Status monitoring and first-line troubleshooting are facilitated by front-panel LEDs and host drive parameter diagnostics. A green CAN-RUN indicator signals pre-operational standby when blinking and operational mode when solid green, while an unlit state points to missing supply power or an internal hardware failure. The red CAN-ERR LED flashes when communication warning thresholds are reached and stays solid red during bus-off events or severe interface faults. Common communication interruptions, such as error codes CE0 (CAN Communication Timeout) or CE1 (CAN Bus Off Fault), are frequently resolved by verifying 120 Ohm bus termination resistors, checking cable shields, and confirming DIP switch baud rates. If bus-off errors persist despite verified external wiring, internal hardware failure may require module replacement or tested unit exchange through ABC Industrial Parts.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EMF2178IB |
| Model / Type | CAN Address Module |
| Component Type | Communication Module |
| Product Family | System Bus (CAN) |
| Communication Interface | System Bus (CAN) |
| Supported Protocols | Lenze System Bus (CAN), CANopen |
| Baud Rate Range | 10 - 1000 kbit/s |
| Node Address Range | 1 - 63 |
| Connector Type | Pluggable screw terminal strip |
| Terminal Allocation | CAN-L, CAN-H, CAN-GND |
| Mounting Location | Function Module Slot (FIF) |
Programming and Configuration
Hardware configuration of the Lenze EMF2178IB is managed directly on the front panel using integrated DIP switches. These switches allow technicians to manually assign node addresses between 1 and 63 and set operating baud rates spanning from 10 kbit/s to 1000 kbit/s. Because node identification is determined physically by these switch settings, preparing a replacement unit requires duplicating the exact DIP switch layout from the existing card prior to powering on the system.
Centralized drive commissioning and parameter adjustments are performed through Lenze Global Drive Control (GDC) software or via the host inverter's keypad. The module facilitates network-wide communication across the System Bus (CAN), allowing engineering tools to read and write drive parameters, adjust control functions, and manage multi-axis operations across Lenze 8200 vector and 9300 drive platforms.
Communication and System Integration
The EMF2178IB provides a direct bus communication interface for Lenze 8200 vector frequency inverters and 9300 series servo drives by seating directly into the drive's Function Module Slot (FIF). Fieldbus connections are wired to a pluggable screw terminal strip with clear terminal allocation for CAN-H, CAN-L, and CAN-GND signals. The module supports both Lenze System Bus (CAN) layer 2 peer communication and standard CANopen fieldbus architectures.
With communication speeds selectable between 10 kbit/s and 1000 kbit/s, the module enables drive-to-drive peer networking and axis synchronization across multi-drive configurations. Integration with PC-based control systems and engineering software can also be established through compatible system bus hardware adapters, such as the Lenze EMF2173IB or EMF2177IB PC System Bus Adapters.
Diagnostics and Status Indication
Visual operational feedback on the EMF2178IB is provided by two dual-color diagnostic LEDs located on the front plate: CAN-RUN (green) and CAN-ERR (red). These indicators allow field technicians to identify network state changes, pre-operational standby, active data transmission, and physical bus faults at a glance.
In addition to visual LED indicators, diagnostic information is accessible through host inverter parameters using the drive keypad or Lenze Global Drive Control (GDC) software. Monitoring internal drive parameters provides insight into bus error counters, communication timeouts, and fieldbus operational modes.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| CAN-RUN | Green - Blinking / Solid / Off | Blinking: Pre-operational / standby state; Solid green: Operational state; Off: Missing power supply or internal hardware fault |
| CAN-ERR | Red - Blinking / Solid / Off | Blinking: CAN bus warning limit reached; Solid red: Bus Off state or hardware/communication fault; Off: No bus error |
Replacement and Spare Part Considerations
Replacing a damaged EMF2178IB communication module involves simple hardware-level alignment. Before inserting the replacement module into the host drive's Function Module Slot (FIF), record the positions of all DIP switches on the original module. Set the DIP switches on the new module to identical positions for node address (1-63) and baud rate (10-1000 kbit/s) to ensure immediate network recognition upon power-up.
Verify that the physical fieldbus connection to the pluggable screw terminal strip is intact, ensuring proper termination at CAN-H, CAN-L, and CAN-GND. Confirm that 120 Ohm bus termination resistors are present at both physical ends of the CAN network. Proper shield grounding must be maintained to prevent high EMI interference from forcing the module into a Bus Off condition.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| CE0 | CAN Communication Timeout | Communication failure or telegram timeout on System Bus (CAN). | Broken communication cable, missing terminating resistors, wrong baud rate configuration, master offline. | Check CAN bus wiring, verify 120 Ohm termination resistors at both cable ends, check baud rate settings on DIP switches. |
| CE1 | CAN Bus Off Fault | Module CAN controller went into Bus Off state due to excessive transmit/receive error count. | High EMI noise interference, poor grounding/shielding, mismatching baud rate across nodes, physical line short. | Verify shield grounding connection, check cable routing away from power cables, confirm all network nodes use same baud rate. If fault persists on clean wiring, return unit for repair. |
Frequently Asked Questions
How do you set the node address on the Lenze EMF2178IB?
The node address is set manually using the front-facing DIP switches on the module, supporting a node range from 1 to 63.
Which Lenze drive series accept the EMF2178IB module?
The module is designed for direct plug-in installation into the Function Module Slot (FIF) of Lenze 8200 vector frequency inverters and Lenze 9300 series servo drives.
What do the CAN-RUN and CAN-ERR LEDs signal during operation?
The green CAN-RUN LED indicates pre-operational standby (blinking) or normal operational status (solid green). The red CAN-ERR LED indicates that warning limits have been reached (blinking) or a Bus Off fault / hardware error (solid red).
What causes fault code CE0 and how is it resolved?
Fault code CE0 indicates a CAN Communication Timeout. It is typically caused by broken wiring, missing 120 Ohm terminating resistors, incorrect DIP switch baud rates, or an offline network master. Check cable continuity, verify termination resistors, and align DIP switch settings.
Is software programming required when installing a spare EMF2178IB module?
No software programming is required on the module itself. Copying the exact DIP switch settings for node address and baud rate from the old module to the spare unit restores network communications automatically.
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