Designing H-Bridge Motor Drives Without Shoot-Through
A practical guide to H-bridge motor drives covering switching states, dead time, inductive current paths, PWM choices, protection, PCB layout, PLC interfacing, and staged commissioning tests.
Manufacturer: Lenze
Product No.: EVS9326-EI
Country of origin:Germany
Product Type: Servo Drives
Barcode: 85044095
Payment: T/T, Western Union
Weight: 7500g
Dimensions: 35.00 x 25.00 x 13.50 cm
Shipping port: Xiamen
Warranty: 12 months
Designed for high-performance motion control within coordinated multi-axis systems, the Lenze EVS9326-EI operates as a closed-loop servo inverter within the legacy 9300-Series family. This unit delivers precise speed, torque, and position control for demanding industrial automation architectures, providing a rated power output of 11.0 kW in a robust, cabinet-mounted form factor.
| Parameter | Value |
|---|---|
| Manufacturer | Lenze |
| Model Number | EVS9326-EI |
| Product Series | 9300-Series |
| Product Type | Servo Drive / Controller |
| Rated Power | 11.0 kW |
| Enclosure Rating | IP20 |
| Product Phase | Phase-Out (Legacy Spare Part) |
| Commodity Code | 85044095 |
| Export Control Classification (ECCN) | N |
| Dimensions (H x W x D) | 35.00 x 25.00 x 13.50 cm |
| Weight | 7.50 kg |
| Terminal / Connector | Function / Assignment |
|---|---|
| X1 | Mains Input Connection / DC Bus Link |
| X2 | Motor Phase Output & Motor Temperature Sensor (PTC) |
| X3 | Resolver Feedback Input |
| X4 | Incremental Encoder Input / Master-Slave Interface |
| X5 | Analog and Digital Control Inputs/Outputs |
| X6 | System Bus (CAN) Interface |
The "EI" suffix designates this unit as the standard execution featuring incremental encoder input/output capabilities. It can directly replace older EVS9326-ES units in most applications, provided the parameter set is migrated and verified using Lenze Global Drive Control (GDC) software. Ensure that the firmware version of the replacement unit matches or exceeds the original to prevent fieldbus mapping mismatches.
Because this drive is IP20 rated, it must be installed in a clean, dust-free control cabinet. At 11.0 kW continuous output, thermal dissipation is significant. Maintain a minimum vertical clearance of 100 mm above and below the unit to prevent localized overheating. For high-inertia applications, an external braking resistor must be connected to terminals UG+ and BR to prevent overvoltage trips (fault code OU) during rapid deceleration.
Always use double-shielded, twisted-pair cabling for the resolver (X3) and encoder (X4) feedback loops. Ground the cable shields at both ends using low-impedance EMC shield clamps to prevent high-frequency noise from corrupting the feedback signal. When integrating the drive into a CAN network via X6, ensure a 120-ohm terminating resistor is physically installed at both ends of the bus line.
CRITICAL WARNING
Isolate all input power sources (mains and 24 VDC auxiliary control power) before performing installation or maintenance. Wait at least 5 minutes after power-off to allow the internal DC bus capacitors to fully discharge below 60 VDC. Verify the absence of voltage with a calibrated multimeter at the DC bus terminals before handling.
Mount the drive vertically on a flat, conductive, and grounded backplate inside the control cabinet to ensure optimal heat transfer and EMC grounding.
Connect the protective earth (PE) conductor directly to the drive's grounding terminal before making any other electrical connections.
Wire the mains input power to terminal X1 and the motor phases to terminal X2 using shielded motor cables to minimize electromagnetic radiation.
Connect the resolver or encoder feedback cable to the respective port (X3 or X4) and route control signals away from high-power cabling.
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| Country of origin |
Germany
|