Product details
E94P040T4NEM Lenze PositionServo 940 Servo Controller
The E94P040T4NEM is a Lenze PositionServo Model 940 encoder-based servo controller. It runs on a 480 VAC 3-phase class supply and delivers 4 A continuous output. The unit suits demanding motion tasks in industrial automation. It combines fast encoder feedback, flexible I/O and optional fieldbus expansion. This is the PositionServo 940 (E94P) drive family, not the Lenze 9400 servo drive. The full base type is E94P040T4N with options and firmware suffix EM.
Key Advantages
- Strong overload headroom: 12 A peak current supports short high-torque moves.
- Fast feedback: encoder input reaches 2 MHz for precise position control.
- Flexible communication: RS232 on board; Ethernet, RS485, Modbus RTU and CANopen as options.
- Rich I/O set: 12 digital inputs, 4 digital outputs, 2 analog inputs and 1 analog output.
- Compact housing: 190 × 95 × 190 mm and only 1.9 kg.
Technical Specifications
- Brand: Lenze
- Model: E94P040T4NEM
- Series: PositionServo Model 940 (E94P)
- Module type: Encoder-based servo controller
- Supply voltage: 320 to 528 VAC, 3-phase, 50/60 Hz nominal
- Continuous output current: 4 A rms nominal
- Continuous power: 800 W at 240 VAC
- Peak output current: 12 A rms maximum
- Overload capability: up to 300 % for 2 s at 8 kHz; 250 % for 2 s at 16 kHz
- Digital inputs: 12, 5 to 24 VDC, optically isolated
- Digital outputs: 4, 5 to 24 VDC at 100 mA, open collector, isolated
- Analog inputs: 2
- Analog outputs: 1
- Encoder input: up to 2 MHz; optional resolver input 12-bit
- Built-in ports: RS232 (PPP)
- Optional ports: Ethernet TCP/IP, RS485 (PPP or Modbus RTU Slave), CANopen 250/500/1000 kBaud
- Protocols: RS232 PPP; optional Modbus RTU, CANopen, Ethernet TCP/IP
- Expansion: option modules for fieldbus interfaces
- Operating temperature: 0 to +40 °C
- Storage temperature: -10 to +70 °C
- Relative humidity: 5 to 90 %, non-condensing
- Vibration resistance: 2 g, 10 to 2000 Hz
- Temperature drift: 0.1 % per °C rise
- Site altitude: up to 1500 m; derate 1 % per 300 m above 1500 m
- Dimensions (H×W×D): 190 × 95 × 190 mm
- Weight: 1.9 kg
Installation Guide
- Mount the drive on a firm, vertical panel with clear airflow.
- Keep the 190 × 95 × 190 mm housing clear of heat sources.
- Wire the 3-phase supply within the 320 to 528 VAC range.
- Use shielded encoder cable for the 2 MHz input.
- Separate power and signal wiring to limit noise.
- Connect I/O with the correct 5 to 24 VDC polarity.
- Check the protective earth connection before power-up.
Setup and Maintenance
- Commission through the RS232 PPP port.
- Set current limits to protect the 4 A continuous rating.
- Tune the loop with the 2 MHz encoder feedback for stable motion.
- Store spare option modules for fast fieldbus changes.
- Clean the heatsink area at regular service intervals.
- Log operating temperature to stay within 0 to +40 °C.
Compatibility Notes
- Works with Lenze PositionServo Model 940 accessories and option modules.
- Encoder feedback devices up to 2 MHz are supported.
- Optional resolver input uses 12-bit resolution.
- Fieldbus options cover Modbus RTU, CANopen and Ethernet TCP/IP.
- RS485 supports PPP or Modbus RTU Slave mode.
- Not compatible with the Lenze 9400 Servo Drive platform.
Certifications and Compliance
- Built for the 480 VAC 3-phase industrial class.
- Optically isolated I/O supports noisy plant environments.
- Protection rating: not published by the manufacturer.
- Power consumption: not published as a separate rated value.
- Lifecycle: product range active; no EOS notice found (verified 2026-10).
Expert Review and Manager’s Insight
Our team sees the E94P040T4NEM as a practical mid-power servo controller. The 4 A continuous and 12 A peak ratings fit many positioning jobs. Fast 2 MHz encoder feedback gives precise closed-loop control. The optional CANopen, Modbus RTU and Ethernet modules ease plant integration. The 0 to +40 °C range suits most indoor cabinets. The clear overload curve at 8 kHz and 16 kHz helps engineers plan acceleration. We rate it as a solid choice for OEM machines that need compact size and flexible communications.
Best-Fit Equipment and Applications
- Packaging machines with fast positioning axes
- Material handling and conveyor motion control
- Textile and printing equipment
- Woodworking and metal cutting feed axes
- Robotic gantries and pick-and-place heads
- Labeling, filling and assembly stations
Packaging List
- 1 × Lenze E94P040T4NEM PositionServo 940 servo controller
- 1 × Quick start documentation set
- 1 × Terminal connector kit
- Ships in protective industrial packaging
Warranty and Shipping
- 12-month warranty on the unit.
- Dispatch within 12 to 24 hours after order confirmation.
- Courier options: FedEx, UPS and DHL.
- Tracking number sent at dispatch.
Buying Guide
- Confirm your supply is 3-phase 480 VAC class.
- Check that 4 A continuous and 12 A peak cover your load.
- Pick the encoder or resolver input for your feedback device.
- Choose the fieldbus option your PLC supports.
- Allow cabinet airflow for the 0 to +40 °C range.
- Order the suffix EM variant for your firmware and option needs.
- Ask us for stock and lead-time details before large orders.
FAQ
Q: Is this a 9400 Servo Drive?
A: No. It belongs to the PositionServo Model 940 family, base type E94P040T4N.
Q: What supply does it need?
A: A 3-phase supply from 320 to 528 VAC at 50/60 Hz.
Q: How much current can it deliver?
A: 4 A continuous and 12 A peak rms.
Q: Which encoder speed is supported?
A: Up to 2 MHz, with an optional 12-bit resolver input.
Q: Can I add Ethernet or CANopen?
A: Yes, through optional modules and ports.
Q: From experience, what should I check first?
A: Start with motor current and encoder type. These two choices drive most failures.
Q: Any practical overload advice?
A: Plan peak moves within 300 % for 2 s at 8 kHz to avoid trips.
Q: What is the typical lead time?
A: We dispatch in 12 to 24 hours via FedEx, UPS or DHL.
Q: What warranty do you offer?
A: A 12-month warranty on the controller.
Contact Us
Email: sales@powergearx.com
WhatsApp: +86 18030005825
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Original Source: https://www.powergearx.com/
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