Siemens 6SE9212-8BA40 Frequency converters

Description

The Siemens 6SE9212-8BA40 is a compact MICROMASTER MM55 frequency converter engineered to provide reliable AC motor speed and torque regulation in industrial automation environments. Operating on a 1AC 208-240V input supply at 50/60 Hz, this drive is specifically designed for constant torque applications requiring up to 0.55 kW of motor power. It serves as an essential motor control component in machine-level architectures, supporting efficient operations for pumps, conveyors, small fans, and general mechanical handling equipment.

Equipped with a built-in Class A filter, the unit effectively minimizes conducted electromagnetic interference to comply with standard industrial electrical network requirements. The drive provides a heavy-duty overload capacity of 150% for 60 seconds, accommodating transient startup loads and operational torque spikes. Housed in a compact physical frame measuring 175 x 73 x 141 mm with an IP20 protection rating, the unit is intended for integration inside standard electrical control cabinets or protective enclosures operating within an ambient temperature range of 0-50 degC.

Features

• Built-in Class A radio interference suppression filter for reduced electromagnetic emissions
• Constant torque output capability supporting motor loads up to 0.55 kW
• Overload capacity of 150% for 60 seconds for handling temporary high-torque demands
• Compact physical footprint measuring 175 x 73 x 141 mm (H x W x D) optimized for panel mounting
• Standard IP20 enclosure protection for indoor cabinet-installed industrial applications
• Operates on single-phase 1AC 208-240V supply voltages at 50/60Hz frequency

Applications

• Small conveyor belts and automated material handling lines requiring precise speed control
• Industrial ventilation and small fan systems operating under constant torque profiles
• Packaging machinery and small mechanical assembly workstations
• Laboratory test benches and pilot-scale industrial production equipment

Technical Specifications

Installation Guidelines

• Verify the exact model number, input voltage rating, and power specifications against system design documents before mechanical mounting.
• Inspect the drive enclosure, cooling louvers, and terminal blocks for any visible transit damage or environmental contamination.
• Mount the unit vertically inside a protective IP-rated control cabinet, maintaining recommended clearance distances above and below the chassis for unimpeded natural airflow.
• Confirm that incoming power lines match the 1AC 208-240V requirement and install appropriate upstream circuit protection devices or fuses.
• Connect the protective earth (PE) conductor securely to the designated ground terminal to ensure electromagnetic compliance and personnel safety.
• Route motor power cables separately from low-voltage control signal wiring to prevent electrical noise coupling.
• Perform insulation resistance and wiring continuity checks on the motor circuit prior to energizing the system.