EVS9321-ER Lenze 9300 Servo Inverter 0.37 kW CANopen

EVS9321-ER | Lenze Global Drive 9300 Servo Inverter

EVS9321-ER is a Lenze Global Drive 9300 series servo inverter. It uses field-oriented servo control. This mode runs synchronous and asynchronous servo motors. Standard asynchronous motors work too. The unit has a built-in/push-through design. Therefore, it fits compact cabinets. Rated motor power is 0.37 kW. Rated output current reaches 1.5 A at 8 kHz. Maximum output current is 2.3 A for 150% overload. Also, CANopen runs on the built-in system bus. An AIF slot adds PROFIBUS DP, DeviceNet, INTERBUS, or LECOM A/B. However, this is a legacy model. Lenze lists it under previous products. The official migration path is the i950 inverter. That unit copies 9300 servo behaviour with a compatibility switch. Still, there is no drop-in same-order-code replacement.

Quick contact: sales@powergearx.com or +86 18030005825. We reply fast. In addition, we ship in 12-24 hours.

Why This Model Stands Out

• Proven servo control: field-oriented control (SC) gives high dynamic response.
• Flexible feedback: a resolver input works alongside a multi-encoder input for TTL/SinCos incremental and Hiperface absolute encoders.
• Built-in networking: the CAN system bus carries integrated CANopen.
• Expandable comms: the AIF slot accepts PROFIBUS DP, DeviceNet, INTERBUS, or LECOM A/B modules.
• Compact footprint: 350 x 78 x 250 mm, and only 3.5 kg.
• Wide voltage window: 3/PE AC 320-528 V, 45-65 Hz, or DC 460-740 V.

Technical Specifications

Core identity

• Brand: Lenze
• Model: EVS9321-ER
• Series: Global Drive 9300 Servo Inverters
• Module type: register controller, built-in/push-through design

Power and current

• Rated motor power: 0.37 kW (4-pole asynchronous motor, 400 V)
• Rated output current: 1.5 A nominal at 8 kHz switching frequency
• Maximum output current: 2.3 A at 8 kHz, 150% x In overload mode
• Control method: field-oriented servo control (SC)

Signal range, resolution and accuracy

• Analog inputs: 2 channels, +/-10 V, switchable 0-20 mA, 11 bits plus sign
• Analog outputs: 2 channels, 9 bits plus sign
• Digital inputs: 6 total, 1 controller enable plus 5 freely assignable, PLC level per IEC 61131-2
• Digital outputs: 4, 50 mA per output
• Frequency input/output: two-track each, Sub-D 9-pin
• Resolver input: Sub-D 9-pin
• Encoder input: multi-encoder, TTL/SinCos incremental and Hiperface absolute

Temperature range and environmental resistance

• Operating temperature: 0 to +55 °C ambient (sizes 9321-9326, 0.37-11 kW)
• Derating: 2.5% per °C above +40 °C output-current derating
• Storage temperature: -25 to +55 °C
• Relative humidity: average 85% RH, no condensation, climatic class 3K3 per EN 50178
• Protection rating: IP20
• UL status: not UL-approved

Electrical and immunity

• Supply voltage: 3/PE AC 320-528 V nominal, 45-65 Hz; DC 460-740 V alternative
• Power loss at 400 V: 100 W
• Noise immunity: PLC-level digital I/O per IEC 61131-2, and 3K3 climate class support keeps operation stable in industrial cabinets

Physical data

• Dimensions (H x W x D): 350 x 78 x 250 mm
• Weight: 3.5 kg

Communication and Compatibility

• Built-in ports: CAN system bus (X4) and AIF automation interface (X1) for keypad or comms module.
• Integrated protocol: CANopen on the system bus.
• Optional modules: PROFIBUS DP (EMF2133IB), DeviceNet (EMF2179IB), INTERBUS (EMF2113IB), LECOM A/B (EMF2102IB).
• Motor compatibility: synchronous servo motors, asynchronous servo motors, and standard asynchronous motors.
• Migration note: Lenze confirms the i950 replicates 9300 servo behaviour using a compatibility switch, an i950 PROFIBUS module, and the L_ICIP library. Therefore, plan a re-engineering step, not a plug-in swap.

Installation Guide

• Mount the unit vertically in a cabinet with free airflow above and below.
• Keep the built-in/push-through heat sink clear of obstructions.
• Use 3/PE AC 320-528 V supply or DC 460-740 V where required.
• Wire the resolver or encoder to the Sub-D 9-pin input before power-up.
• Connect CAN bus at X4. Then set node address and baud rate.
• Fit the AIF module at X1 only when power is off.
• Respect IP20: install inside an enclosure, away from dust and moisture.
• Derate output current above +40 °C ambient to protect the drive.

Commissioning and Maintenance

• Use the keypad on the AIF interface for fast parameter setup.
• Run the field-oriented servo control autotune for the connected motor.
• Check analog input scaling: +/-10 V or 0-20 mA, 11 bits plus sign.
• Verify digital input levels match PLC IEC 61131-2 expectations.
• Log CANopen parameters for repeatable line commissioning.
• Clean the heat sink fins on a fixed schedule, because IP20 units collect dust.
• Check fan and cabinet filters at every service interval.
• Back up parameter sets before any firmware or module change.

Certifications and Lifecycle Status

• Designed to EN 50178 climate class 3K3 for humidity and condensation control.
• Digital I/O follows IEC 61131-2 PLC level.
• Not UL-approved – confirm local code before installation.
• Legacy status: the Lenze previous-products page is active, and newer drive generations supersede this unit.
• Migration path to i950 is officially documented by Lenze.
• Audit status: OFFICIAL_VERIFIED, last verified 2026-10.

Expert Review

The EVS9321-ER remains a dependable choice for small servo axes. The 0.37 kW rating and 1.5 A nominal current suit light positioning tasks. Meanwhile, the 150% overload at 2.3 A covers short peaks. Field-oriented control gives smooth torque at low speed. Also, the multi-encoder input saves extra hardware. CANopen plus the AIF slot keeps cabinet wiring simple. However, remember two limits: IP20 needs a clean enclosure, and the unit is not UL-approved. For new builds, check the i950 migration path first. For legacy spares, this model is a direct fit.

Manager’s Insight

Lead times decide legacy projects. The EVS9321-ER keeps existing 9300 machines running without rewiring. The risk is supply, not performance. Therefore, stock one spare per critical axis. Pair it with a documented parameter backup. If the machine has a long life ahead, budget an i950 migration in parallel. Commercially, this model wins on fast replacement and low integration effort. Send your machine details to sales@powergearx.com, and we will confirm fit in hours.

Best Fit Equipment and Applications

• Small packaging machines with light servo axes.
• Labeling and marking stations that need precise position control.
• Material handling units with short, fast moves.
• Textile and wire processing lines with asynchronous servo motors.
• Retrofit projects replacing older Lenze 9300 axes.
• Test benches that need resolver feedback and CANopen links.
• Spare-part pools for existing production lines.

Packing List and Warranty

• 1 x Lenze EVS9321-ER servo inverter
• 1 x product documentation set
• 1 x protective packaging
• Warranty: 12 months
• Dispatch time: 12-24 hours after order confirmation
• Couriers: FedEx, UPS, DHL

FAQ

Q: Is the EVS9321-ER a direct replacement for another 9300 size?

A: Only within the same size class. Sizes 9321 and 9322 share the listed dimension and weight data. However, always compare rated current and encoder needs before swapping.

Q: Can I run a standard asynchronous motor on this drive?

A: Yes. Field-oriented servo control supports standard asynchronous motors, not just servo motors.

Q: What feedback devices does it accept?

A: A resolver on the Sub-D 9-pin input, plus TTL/SinCos incremental and Hiperface absolute encoders on the multi-encoder input.

Q: How do I add PROFIBUS or DeviceNet?

A: Fit the matching AIF module: EMF2133IB for PROFIBUS DP, EMF2179IB for DeviceNet, EMF2113IB for INTERBUS, EMF2102IB for LECOM A/B.

Q: Does it meet UL requirements?

A: No. Lenze lists this unit as not UL-approved. Therefore, check your local electrical code first.

Q: What happens above +40 °C ambient?

A: Output current must be derated by 2.5% per °C. Maximum ambient for this size is +55 °C.

Q: Is the 9300 series still supported?

A: Lenze keeps it on the previous-products page. The official forward path is the i950 with a compatibility switch, a PROFIBUS module, and the L_ICIP library. Still, there is no same-order-code drop-in.

Q: From experience, what fails first in the field?

A: Dust blocking the heat sink and worn cabinet fans. IP20 units need clean airflow. As a result, clean fins and check filters at every service visit.

Q: How fast can you ship, and how do I confirm fit?

A: We ship in 12-24 hours by FedEx, UPS, or DHL. Email sales@powergearx.com or message +86 18030005825 with your motor and encoder details.

Buying Guide

• Match rated current first: 1.5 A nominal, 2.3 A peak at 150%.
• Confirm motor type: synchronous servo, asynchronous servo, or standard asynchronous.
• List your feedback device before ordering, because resolver and multi-encoder inputs differ.
• Decide the network now: CANopen is built in, or add an AIF module for PROFIBUS, DeviceNet, INTERBUS, or LECOM.
• Check cabinet temperature, and plan derating above +40 °C.
• Confirm UL status with your local inspector before purchase.
• For new machines, compare the i950 migration path against spare-part reuse.
• Order one spare for each critical axis to cut downtime risk.

Inquiries: sales@powergearx.com | +86 18030005825

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