Lenze EWZ0046 CAN Connector System – System Bus Connector
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Product Information
The Lenze EWZ0046 is a specialized bus connector within the System Bus (CAN) Accessories family, designed to establish communication links across distributed drive architectures. Featuring a standardized 9-pin Sub-D connector interface, this component connects frequency inverters, servo drives, and control controllers onto standard CAN and CANopen networks. It is used across packaging machinery, material handling and logistics, automotive manufacturing, and textile processing equipment to interface components such as Lenze 8400 series frequency inverters and Lenze 9300 series servo drives.
Commissioning a spare or replacement unit requires verifying physical cabling and selecting the proper termination state for the network node location. The EWZ0046 features an integrated switchable 120 Ohm terminating resistor, eliminating the requirement for external termination plugs or separate resistors on the bus line. Setting the switch to the ON position terminates the physical end nodes of a CAN segment to maintain signal integrity, while selecting the OFF position allows intermediate nodes to pass signals along the bus network without interruption. ABC Industrial Parts can assist maintenance personnel in sourcing tested replacement connectors to restore reliable fieldbus operation.
Network communication disruptions on CAN and CANopen fieldbus lines are frequently traced to physical wiring issues or incorrect line termination settings rather than internal software faults. Unstable bus signals or communication timeouts can occur if line reflections interfere with data transfer due to missing or misplaced line termination. Inspecting the mechanical seating of the 9-pin Sub-D plug and verifying that only the physical end nodes have their internal 120 Ohm switch toggled to ON provides an effective first-line troubleshooting step. If physical housing damage or contact wear compromises connection stability, replacing the unit with a spare from ABC Industrial Parts offers a fast path back to full production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EWZ0046 |
| Model/Type | CAN Connector System |
| Component Type | Bus Connector |
| Product Family | System Bus (CAN) Accessories |
| Bus System | CAN / Lenze System Bus |
| Connector Type | 9-pin Sub-D |
| Terminating Resistor | 120 Ohm (Switchable) |
| Supported Protocols | CAN, CANopen |
| Compatible Drive Series | Lenze 8400 Series, Lenze 9300 Series |
Communication and System Integration
The Lenze EWZ0046 physical connector system provides the hardware interface required to integrate Lenze industrial drives into Lenze System Bus (CAN) and standardized CANopen fieldbus architectures. Utilizing a standardized 9-pin Sub-D connector format, the unit establishes secure physical connection points between drives, motion controllers, and central control networks.
To maintain noise-free data interchange across high-speed CAN networks, the connector incorporates an internal 120 Ohm terminating resistor controlled via a manual slide switch. Toggling the switch to the ON position applies the necessary 120 Ohm termination impedance across the differential signal lines at physical end nodes. For intermediate nodes along a shared bus line, setting the switch to OFF permits signal pass-through without loading the network path.
This connector interface directly supports communication across distributed automation hardware, including Lenze 8400 series frequency inverters and Lenze 9300 series servo controllers. By providing standardized wiring entry and reliable physical termination, the connector reduces network signal reflections and ensures stable data exchange in complex multi-axis machinery.
Replacement and Spare Part Considerations
When replacing an existing Lenze EWZ0046 connector on an operational machine line, care must be taken to match the physical node location and termination configuration of the original unit. Because the component uses standard 9-pin Sub-D geometry, physical mounting and cable attachment are straightforward, but correct termination setting is critical to network stability.
Before applying power to the fieldbus network, verify whether the replaced connector functions as an end node or an intermediate node in the CAN topology. End nodes must have their integrated 120 Ohm resistor switch set to ON, whereas intermediate branching connectors must remain in the OFF position. Incorrect termination settings can cause signal reflections, resulting in intermittent communication faults across all connected drives.
Frequently Asked Questions
What is the primary function of the Lenze EWZ0046 connector?
The Lenze EWZ0046 is a bus connector designed to connect drive hardware, such as Lenze 8400 frequency inverters and 9300 servo drives, to Lenze System Bus (CAN) and CANopen industrial networks via a 9-pin Sub-D interface.
How does the integrated terminating resistor work on the EWZ0046?
The connector features an integrated switchable 120 Ohm terminating resistor. When set to the ON position, it provides termination at the physical end nodes of a CAN segment. When set to the OFF position, it enables pass-through connection for intermediate network nodes.
Which drive families are compatible with the Lenze EWZ0046?
The EWZ0046 connector is compatible with Lenze System Bus (CAN) hardware, including Lenze 8400 series frequency inverters, Lenze 9300 series servo drives, and standard CANopen fieldbus devices.
What issues can occur if the termination resistor switch is set incorrectly?
If the 120 Ohm termination resistor is set incorrectly, signal reflections can occur on the CAN bus lines, leading to bus communication errors, lost data packets, or unpredictable drive communications.
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