Original Siemens 6SE70 Inverter/Converter 6SE7016-1EA61 6SE70161EA61 6SE7O16-1EA61

6SE7016-1EA61 | Siemens SIMOVERT Masterdrives VC AC Compact Converter — 380–480V AC / 2.2kW / 6.1A / IP20 / Base Drive

AC-AC Converter — Self-Contained Drive Unit

The 6SE7016-1EA61 is an AC-AC frequency converter — it takes a standard 3-phase 380–480V AC mains supply directly and converts it internally to variable-frequency, variable-voltage 3-phase AC output for the motor. This places the 1EA61 in a fundamentally different configuration from the 1TA-series compact inverters (which require a separate DC bus supply):

AC-AC architecture (6SE7016-1EA61): Internal rectifier converts the AC mains to DC bus; internal IGBT inverter converts DC to variable-frequency AC motor supply. All in one compact unit — standalone, no external supply module required.

DC-AC architecture (6SE7016-1TA61): No internal rectifier. Takes a shared DC bus from an external supply module. Multiple DC-AC units share one bus.

The 1EA61's standalone AC-AC architecture simplifies installation — connect mains supply, connect motor, configure parameters. No common bus infrastructure to design or commission.

Key Specifications

"Base Drive" — Expandable Platform

The "BASE DRIVE" designation in the 6SE7016-1EA61 specification identifies this compact unit as the foundational configuration — a drive ready for operation in standard vector control applications, expandable with option boards for additional functionality:

PROFIBUS communication: A CBP2 option board adds PROFIBUS DP slave capability — enabling integration with SIMATIC S7 PLCs and SINUMERIK CNC systems via PROFIBUS.

Encoder feedback: An encoder evaluation board allows the drive to close the speed loop using a physical encoder on the motor — achieving higher speed accuracy than sensorless vector control alone.

Technology function modules: Specialised technology boards extend the drive's capability to application-specific functions — positioning control, tension control, and synchronisation with other drives.

Each option is fitted in the compact unit's designated option slots — the base drive hardware supports these additions without modification.

Application Scenarios

Standalone 2.2kW axis drive: A machine tool auxiliary axis or conveyor drive requires precise vector-controlled variable speed in a compact form factor. 6SE7016-1EA61 connects directly to the 380–480V mains supply — no common bus or supply module needed for a standalone axis.

Base drive with PROFIBUS integration: A SIMATIC S7 PLC-controlled system requires fieldbus-connected variable speed drives. 6SE7016-1EA61 base drives are fitted with CBP2 PROFIBUS option boards — enabling direct drive command and monitoring from the PLC over PROFIBUS DP.

FAQ

Q1: What is the key difference between 6SE7016-1EA61 (AC input) and 6SE7016-1TA61 (DC input)?

The 1EA61 includes its own rectifier — it connects directly to a 380–480V AC mains supply and operates as a standalone drive unit. The 1TA61 has no internal rectifier and requires a pre-existing 510–650V DC bus from an external SIMOVERT supply module. Use 1EA61 for standalone or small system applications; use 1TA61 in multi-drive common DC bus systems where energy sharing between drives is required.

Q2: What is the output frequency range of 6SE7016-1EA61?

Like other compact units in the SIMOVERT MASTERDRIVES VC family, the 6SE7016-1EA61 provides an output frequency range from 0 Hz (motor standstill) to approximately 300–400 Hz at the standard carrier frequency setting — sufficient for standard induction and synchronous motor applications. Higher output frequencies are available through carrier frequency parameter settings within the drive's rated thermal limits.

Q3: Can 6SE7016-1EA61 be connected to a common DC bus in addition to its AC mains input?

The 1EA61 compact unit is designed for standalone AC-AC operation. While the SIMOVERT MASTERDRIVES system does support AC-fed units connected in common DC bus configurations under specific conditions, the 1EA61's primary design is standalone AC-AC. For common DC bus multi-drive applications, the DC-AC 1TA-series compact units are the appropriate choice. Confirm from SIMOVERT MASTERDRIVES system design documentation before attempting shared DC bus operation with 1EA61 units.

Q4: Does 6SE7016-1EA61 include EMC filtering?

The base drive 6SE7016-1EA61 typically does not include a built-in mains EMC filter — it is the base drive configuration. For compliance with EN 61800-3 EMC requirements, an external filter may be required depending on the installation's cable lengths and the required emission category. The applicable SIMOVERT MASTERDRIVES installation manual specifies filter requirements for specific configurations.

Q5: What safety precautions apply when replacing 6SE7016-1EA61?

Isolate and lock out the 3-phase mains supply to the 6SE7016-1EA61. The unit's internal DC bus capacitors retain charge after mains isolation — allow the discharge time specified in the SIMOVERT MASTERDRIVES maintenance manual and verify DC bus voltage is below 50V before handling. Follow all appropriate lockout/tagout procedures for the machine's control system before accessing drive hardware.