ABB ACS800-31/U31 series transmission module

ABB ACS800-31/U31 series transmission module

Product Overview and Core Features

Positioning: Wall mounted low harmonic AC drive module, used to control AC motors, supports multiple voltage levels (208-690 VAC), suitable for industrial automation scenarios such as fans, pumps, conveyors, etc.

Core advantages:

Adopting direct torque control (DTC) technology, supporting high-precision speed and torque control.

Integrating the input side rectifier and motor side inverter, energy conversion is achieved through IGBT modules, with low input current harmonic distortion (THD).

Support multiple extension functions (such as brake chopper, EMC filter, anti misoperation device), suitable for complex industrial environments.

Technical parameters and specifications

1. Rated performance

Power range: 5.5-110 kW (IEC standard), 7.5-125 HP (NEMA standard).

Voltage and frequency: Supports three-phase 208/230/400/480/690 VAC, frequency 48-63 Hz.

Overload capacity:

Light overload: Allow 10% overload for 1 minute every 5 minutes.

Heavy overload: 50% overload is allowed every 5 minutes for 1 minute.

Efficiency: Approximately 97% at rated power.

2. Structure and Protection

Dimensions: available in R5 (width 265 mm) and R6 (width 300 mm), with protection levels of IP21 (UL Type 1) or IP20 (UL Type Open).

Cooling method: forced air cooling, air flow rate of 350-405 m ³/h, noise level of 70-73 dB.

3、 Hardware composition and interfaces

Core module:

Incoming side rectifier: Rectify AC power into DC power, including EMC filter (optional) to suppress harmonics.

Motor side inverter: Convert DC power into adjustable frequency AC power to drive the motor to operate.

Control board (RMIO): Provides digital/analog I/O, relay output, communication interfaces (such as DDCS fiber optic communication), and supports fieldbus expansion (PROFIBUS, MODBUS, etc.).

Key interfaces:

Power interface: input (U1/V1/W1), output (U2/V2/W2), braking circuit (UDC+/UDC -).

Control interface: Analog input (0-10 V/4-20 mA), digital input (6 channels), relay output (3 channels), control panel interface (CDP312R).

Installation and wiring

1. Mechanical installation

Support wall mounted or cabinet installation, with reserved cooling space (at least 50-200 mm around) to avoid vibration and high temperature environments.

Weight: R5 is about 65 kg, R6 is about 100 kg, and lifting devices are required for handling.

2. Electrical installation

Power cable: Shielded cable is required, with a cross-sectional area selected according to the current (6-185 mm ²), and the shielding layer needs to be grounded 360 ° to reduce electromagnetic interference.

Control cable: For analog signals, it is recommended to use double shielded twisted pair cables, while for digital signals, single shielded cables should be used to avoid parallel wiring with power cables.

Grounding requirements: Strictly follow the PE grounding specifications, and the cross-sectional area of the grounding conductor should not be less than 1/2 of the phase line (or 16 mm ², whichever is larger).

Safety and Maintenance

Safety Notice:

High voltage warning: After power failure, wait for 5 minutes to confirm that the capacitor has discharged completely (voltage<50 V) before operation.

Static protection: When handling printed circuit boards, it is necessary to wear a grounding wristband.

Anti misoperation: An optional AGPS board (+Q950) can be used to block power output through an external switch to prevent accidental startup.

Maintenance cycle:

Cooling radiator cleaning: Every 6-12 months (depending on the amount of dust in the environment).

Cooling fan replacement: Every 6 years (approximately 50000 hours).

Capacitor replacement: Every 10 years (affected by ambient temperature).