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Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Lenze Drive Systems |
| Part Number | E84AVSCE3712SX0 |
| Product Series | 8400 State-Line |
| Mains Supply Voltage | 1-phase 230/240 V AC (190–264 V AC, 45–65 Hz) |
| Rated Motor Output Power | 0.37 kW (0.5 HP) |
| Rated Output Current | 2.4 A (at 230 V AC) |
| Peak Output Current | 3.6 A for 60 seconds (150% overload) |
| Output Frequency Range | 0 to 599 Hz |
| Control Modes | V/f characteristic (linear/square-law), Sensorless Vector Control (SLVC) |
| Integrated Safety | Safe Torque Off (STO) SIL 3 / PL e capable |
| Enclosure Protection | IP20 |
| Operating Temperature | −10 to +55 °C (with derating above +45 °C) |
Product Introduction & Supply Chain Strategy
The Lenze E84AVSCE3712SX0 is a compact 0.37 kW (0.5 HP) frequency inverter from the 8400 State-Line drive family. Engineered for controlled speed applications such as belt conveyors, travelling drives, and wire drawing machines, this VFD features integrated ramp functions, DC braking, and Safe Torque Off (STO) safety inputs to streamline machine architecture without requiring auxiliary safety contactors.
Stocking this drive as New Surplus prevents unexpected downtime on automated handling lines. Third-party repaired or used drives frequently present dried-out DC-bus electrolytic capacitors and degraded gate-driver circuits, leading to premature overcurrent faults under load. Procuring factory-sealed New Surplus units guarantees original insulation resistance and verified power semiconductors, yielding a substantially lower Total Cost of Ownership (TCO) and seamless system drop-in.
E84AVSCE3712SX0
E84AVSCE3712SX0
Installation & Configuration Guide
1
Stage 1: Pre-Installation (Prep & Safety)
Prerequisite & Safety Lockout
1.Stage 1: Pre-Installation (Prep & Safety):Prerequisite & Safety Lockout.
Isolate main incoming 230 V AC power at the cabinet disconnect breaker and verify zero voltage across terminals L1 and N using a calibrated meter. Wait at least 3 minutes for the internal DC-bus capacitors to discharge completely. Strap on a grounded ESD wristband.
2
Stage 2: Removal
Mechanical Extraction
2.Stage 2: Removal:Mechanical Extraction.
Unplug the control terminals and motor connections (U, V, W). Remove any attached memory modules (EASY Memory Module) or communication interfaces. Release the DIN-rail locking lever or remove the panel mounting screws to lift the original drive chassis out of the enclosure.
3
Stage 3: Installation (Clone & Seat)
Hardware Mounting
3.Stage 3: Installation (Clone & Seat):Hardware Mounting.
Inspect the New Surplus E84AVSCE3712SX0 for intact factory seals and pristine terminal connections. Mount the unit vertically onto the DIN rail or backplate, ensuring at least 100 mm (4 in) of vertical clearance for thermal convection. Transfer the EASY Memory Module from the old drive to the new unit to clone all motor parameters and I/O settings instantly.
4
Stage 4: Power-On & Testing
Power-On & Functional Test
4.Stage 4: Power-On & Testing:Power-On & Functional Test.
Reapply the 230 V AC main supply. Observe the front status LEDs: confirm the green “Ready” LED illuminates steadily without red “Error” fault codes. Execute a low-speed manual jog test to verify motor rotation direction and check current draw under normal load conditions.
Firmware/Software Versions & Upgrade Notes
- EASY Memory Module Cloning: Drive parameters, motor maps, and custom logic settings are stored on the removable Lenze EASY Memory Module. Swapping this memory card into the replacement drive automatically migrates configuration data without needing a laptop or Lenze Engineer software setup.
- Software Compatibility: Fully supported in Lenze Engineer (v2.12 or higher) and EASY Starter configuration tools via the front diagnostic interface.
- Firmware Versioning: When replacing drives on fieldbus networks (CANopen, PROFIBUS, PROFINET), ensure that the replacement drive’s firmware revision matches or exceeds the original unit to prevent PLC hardware configuration errors.
Frequently Asked Questions (FAQ)
Q: Is this drive brand new or rebuilt? A: This drive is 100% Brand New Surplus. It has never been deployed in a plant panel, subjected to thermal stress, or rebuilt with aftermarket components.
Q: Can I use the E84AVSCE3712SX0 with a 3-phase 230V input? A: This specific model (E3712...) is designed for single-phase 230 V AC mains input (L1/N). For 3-phase power input configurations, specify the corresponding 3-phase 8400 State-Line variant (...3722... or ...3743...).
Q: How do I back up and transfer the parameters from my existing drive? A: Simply turn off power, remove the small EASY Memory Module from the front slot of the old drive, and insert it into the New Surplus drive. The new drive reads and applies all motor data automatically upon power-up.
Q: Does this model include integrated Safe Torque Off (STO)? A: Yes, the 8400 State-Line hardware features integrated STO functionality compliant with SIL 3 (IEC 61508) and PL e (EN ISO 13849-1), allowing safety circuits to disable drive torque safely without dropping main line contactors.
Q: What warranty is provided with this New Surplus drive? A: We back all New Surplus Lenze drives with a 1-year functional replacement warranty.
