Technical Specifications and Performance
Core Electrical Data
The module is engineered to handle the high current demands of coordinated multi-axis systems.
Input Voltage: 3-phase 400/480 V AC at 50/60 Hz.
Rated Input Current: 24.5 A.
Output Voltage: 565/675 V DC (standard DC-bus).
Rated Output Current: 30 A.
Rated Power: 10.3 kW (often rated at 15 kW / 20 HP depending on application standards).
Apparent Power: Supports a range of 17/20.4 kVA.
Functional Design Features
Thermal Management: Utilizes the cold plate technique to dissipate heat through an external mounting surface.
Integrated I/O: Features 3 permanently assigned digital inputs and 2 digital outputs for basic status monitoring.
DC-Bus Integration: Allows for efficient energy sharing between adjacent axis modules via a shared bus connection.
Regenerative Management: Includes dedicated connections for an external brake resistor to manage energy during motor deceleration.
Environmental Rating: IP20 protection for standard control cabinet installation.
System Role in Automation
The Lenze E70ACPSE0304S provides the authoritative power layer for the i700 drive system. It typically works in conjunction with a Lenze Controller (such as the c520 or i950) via EtherCAT communication. This hardware ensures stable power delivery during high-dynamics movements, preventing voltage drops across the multi-axis network.
Field Installation and Maintenance Strategies
Thermal and Wiring Integrity
Field experience shows that improper mounting of the cold plate can lead to thermal shutdown during peak loads. Therefore, you must verify that the mounting surface is clean and meets Lenze's specific flatness requirements for optimal heat transfer. When wiring the 3-phase input, ensure that the protective earth (PE) connection follows local industrial electrical codes to prevent electromagnetic interference (EMI). Moreover, a mechanical necessity to protect the module requires that you use the recommended external fuses or circuit breakers.
Diagnostics and Power Troubleshooting
Technicians monitor the DC-bus voltage and digital status outputs to identify power supply faults or input phase losses quickly. If the Lenze E70ACPSE0304S signals a fault, check the external brake resistor and the total load of all connected axis modules immediately. Also, verify that the input voltage remains within the specified ±10% tolerance to avoid overvoltage or undervoltage trips. Because a failure in the central power module will stop all connected axes, this unit features high-reliability internal protection.
Buyer’s Guide & FAQ
Q1: What is the primary role of the Lenze E70ACPSE0304S? It is a 30 A power supply module that converts AC power into DC-bus voltage for Lenze i700 servo inverters.
Q2: Does this module require an external cooling fan? This specific model uses cold plate cooling, meaning it dissipates heat through the cabinet's mounting plate or an external heat sink.
Q3: Can I connect multiple power supplies to the same DC-bus? You must follow Lenze’s specific multi-axis configuration guidelines; typically, one supply feeds a defined group of axes.
Q4: What communication protocol is used for diagnostics? While the power supply uses digital I/O for basic status, the overall drive system is typically managed via EtherCAT.
Q5: How can I confirm the authenticity of my Lenze hardware? Verify that the module features official Lenze branding and a unique serial number. Authorized channels ensure the unit meets original factory standards for high-performance automation.
