ABB ACS355-03E-44A0-4 Machinery Drive 22 kW 44 A

Where the ACS355-03E-44A0-4 fits

44 A, 22 kW and frame R4 identify the ACS355-03E-44A0-4 in the ACS355 ratings table, one of the 380 to 480 V types in ABB’s machinery drive catalogue. At 22 kW this is the top of the ACS355 three-phase 400 V range, with a 260 mm wide R4 housing and no IP66 variant listed.

Approvals printed in the catalogue are UL, cUL, CE, C-Tick and GOST R, and the drive complies with the Low Voltage, Machinery and EMC directives as listed. Neighbouring ratings sit in AC drives, and the ABB ACS355 series page describes the family.

Technical specifications

Choosing and installing the ACS355-03E-44A0-4

Compare the nameplate of the motor with 44 A. If the motor draws up to that value and the overload does not exceed 66.0 A for a minute, the type fits. The brake chopper is built in, which helps with deceleration of inertial loads, and the DC bus can be shared through the common DC connection.

Catalogue fuse: 100 A gG, 100 A in UL systems. Cooling: 96 m3/h (57 ft3/min). Heat dissipation: 588 W, or 2007 BTU/hr. Add CHK-06 when partial-load harmonics matter and NOCH-0070-6x when the motor cable is long. RFI-34 is the external RFI filter listed.

Variants for the ACS355-03E-44A0-4

Reading ACS355-03E-44A0-4: ACS355 names the series, 03 is three-phase input, E stands for EMC filter connected at 50 Hz (U would mean disconnected at 60 Hz), 44A0 is the rating and 4 selects 380 to 480 V. The catalogue lists +J400 for the assistant panel ACS-CP-A and +J404 for the basic panel ACS-CP-C.

Cabinet-mounted IP20 dimensions for R4: height 181 mm (up to 244 mm with fastenings and clamping plate), width 260 mm, depth 169 mm, weight 4.4 kg. NEMA 1 wall-mounted version: 270 to 320 mm tall, 5.0 kg. The catalogue lists no IP66 / IP67 variant for this rating.

Panel installation for a 22 kW drive

At this power level the drive releases a meaningful amount of heat into the enclosure, so plan the cabinet ventilation around the heat dissipation and air flow figures in the table rather than around the physical size of the R4 frame. Leave the free space above and below the drive that the ABB hardware manual specifies, and do not place other heat sources directly in the cooling air path. Where several drives share a cabinet, arrange them so that the exhaust of one is not drawn into the intake of the next.

Use a screened, symmetrical motor cable and terminate the screen at both the drive and the motor as the manual describes. Keep motor cables apart from control and fieldbus wiring, cross them at right angles where they must meet, and bond the drive and the motor frame to the protective earth system. Fit the recommended input fuses ahead of the drive and size the supply cable for the fuse rating and local wiring regulations.

Commissioning the ACS355-03E-44A0-4

Before first power-up, check the supply voltage against the 380 to 480 V range and confirm the EMC filter setting suits the earthing arrangement of the site, since the E configuration has the filter connected. Enter the motor nameplate data, select the control mode and set acceleration and deceleration ramps that the driven machine can tolerate. If the load has high inertia, verify that a braking resistor is fitted and correctly sized for the built-in brake chopper before testing fast stops.

Test the safe torque off circuit as part of the machine safety validation, and record the result. Run the motor first without load where possible, check the direction of rotation, then load the machine and watch the output current against the 44 A continuous rating during a full operating cycle. Save a parameter backup once the settings are final.

Operating in Oman and GCC heat and dust

Plant rooms, pump stations and workshops in Oman often run at high ambient temperatures, and the drive current may need derating when the air around it exceeds the limit given in the ABB documentation. Measure the actual cabinet temperature in summer rather than relying on design assumptions. If the drive is installed at altitude in the interior or mountain areas, check the altitude derating as well.

Fine sand and dust clog heat sinks and fans, which raises internal temperatures and shortens component life. Use filtered ventilation or a cooled enclosure, keep cable glands sealed and clean filters regularly. In humid coastal locations, avoid condensation by keeping the cabinet warm when the drive is idle for long periods or by using an anti-condensation heater.

Routine maintenance checks

Inspect the cooling fan and heat sink at regular intervals and clean them with dry, oil-free compressed air when dust has collected. Re-tighten power terminals during planned shutdowns, since thermal cycling can loosen connections. Review the fault and event log for repeated overcurrent, overvoltage or overtemperature trips, which usually point to a mechanical, ramp or cooling issue that should be corrected rather than reset repeatedly.

Documents and RFQ

For a quotation on the ACS355-03E-44A0-4, contact Seven Star LLC with the motor nameplate and supply details. Ratings, dimensions, fuses and accessories above come from ABB catalog 3AUA0000068569.

Confirm before ordering: type code, control panel option, motor rated current, and installation temperature and altitude.