ABB ACS550-01-015A-4 AC Drive 7.5 kW 15.4 A

Frame R2 ACS550 drive rated 15.4 A

Need 7.5 kW from an ACS550 on a 400 V network? ACS550-01-015A-4 is the catalogue type: 15.4 A, frame R2, wall mounting, 125 x 222 mm base. For heavy duty the figure is 11.9 A and 5.5 kW. It is the first R2 rating and a typical size for booster pumps, process fans and screw conveyors, with 200 m of motor cable allowed without a choke.

ABB describes its general purpose drives as simple to buy, install, configure and use, with typical use on pumps, fans and constant torque loads such as conveyors. A built-in category C2 EMC filter, a swinging choke and built-in Modbus come as standard. More models are in the AC drives category, and the series is covered on the ABB ACS550 family page.

Technical specifications

Selection notes for 7.5 kW on frame R2

Pick the duty class before the size. Normal use: 7.5 kW at 15.4 A. Heavy duty: 5.5 kW at 11.9 A, tolerating roughly 17.9 A for a minute. Peaks of 1.8 times the heavy-duty current are allowed for 2 seconds each minute. If the nameplate current of the motor is above 11.9 A on a demanding load, step up one type.

Install with 200 mm of clearance above and below. The unit loses 232 W, so a cabinet must dissipate 792 BTU/hr, with air flow of 88 m3/h (52 ft3/min). Protect it with 16 A gG or 20 A UL Class T fuses, and use choke NOCH-0016-6X (19 A) if cable runs exceed 200 m, up to 250 m.

Ordering code and enclosure options

An order starts with ACS550-01-015A-4: series ACS550, construction 01, rating 015A, voltage 4. The catalogue lists these option codes: B055 for IP54, J404 for the ACS-CP-C basic control panel, 0J400 for no control panel, L511 for the OREL-01 relay extension, and K454 for the RPBA-01 PROFIBUS DP adapter in the fieldbus slot.

The IP54 / UL Type 12 version of frame R2 measures 561 x 213 x 245 mm and weighs 11 kg, against 469 mm high (with cable connection box), 125 mm wide and 222 mm deep at 9 kg for the IP21 form. There is one slot for a fieldbus adapter, and Modbus is built in as standard.

Matching the drive to pumps, fans and conveyors

The ACS550-01-015A-4 sits at a point where the same frame can serve two different motor sizes depending on the load, so the application should be described clearly before a quotation is prepared. A centrifugal booster pump or a cooling tower fan has a falling torque demand at reduced speed and rarely needs more than the normal-use rating. A screw conveyor, a mixer or a positive displacement pump can need full torque from standstill and repeated overloads, which is where the heavy-duty figure applies.

• Collect the motor nameplate current, voltage and speed, and note whether the motor is an older design or one intended for inverter supply.
• Describe how the drive will be controlled: local panel, analogue speed reference from a PLC, digital start and stop, or the built-in Modbus link.
• State whether the load can drive the motor, for example a fan that must stop quickly, so the use of the built-in brake chopper and a suitable resistor can be considered.
• Give the distance between the drive and the motor, because it decides whether an output choke is needed.

Installation and start-up

Mount the drive upright on a solid wall or panel back plate, observe the clearances above and below, and make sure the cooling air stream is not blocked by trunking or other equipment. Use symmetrical screened motor cable with the screen properly terminated, and keep control cables separated from power wiring. Check that the built-in EMC filter suits the earthing system of the supply, following the guidance in the ABB user manual for networks that are not solidly earthed.

The ACS550 control panel offers start-up assistants that guide the user through motor data, the application macro and the main control settings. Choose the macro closest to the application, such as the pump and fan or basic speed control options, then adjust acceleration and deceleration ramps and limits. Test run with the motor uncoupled where possible to verify direction of rotation, then couple the load and confirm the drive behaves correctly through its full speed range.

Service and troubleshooting

Keep a record of the parameter settings, either on paper or by copying them to the control panel, so that a replacement unit can be configured quickly. Inspect the heat sink and the cooling fan regularly and clean away dust before it builds up. When a fault occurs, read the fault code and the fault history before resetting; overcurrent faults on start-up often point to too short an acceleration ramp or a mechanical problem, while overtemperature faults usually come from poor ventilation or a blocked heat sink.

Site conditions in Oman and the GCC

The catalogue ratings are stated for up to 40 degrees C, and many pump houses, rooftop plant rooms and outdoor panels across the region exceed this in summer. Measure the real ambient temperature and apply the ABB derating, or provide cooling, rather than sizing on the nameplate alone. For dusty sites such as quarries, cement plants and desert pumping stations, the IP54 option or a well-filtered enclosure helps keep sand out of the heat sink. Near the coast, humid salty air can condense inside cabinets overnight, so consider anti-condensation heating and keep cable glands sealed.

Catalogue and quotation

Figures here come from ABB’s ACS550 catalog 3AFE64792857, available through the document link. To obtain a price for the ACS550-01-015A-4, send Seven Star LLC your motor data, voltage and communication needs; availability and lead time are confirmed in the quotation.

Before ordering, verify the full type code with options, the motor current, and the site temperature and altitude, since catalogue ratings apply at up to 40 degrees C and 1000 m.