ABB ACS355 Drive Replacement Guide

Overview

The ABB ACS355 is a widely deployed, compact micro/machinery drive designed for cabinet installation in demanding systems. Engineered for system integrators, machine builders, and OEMs, the ACS355 is optimized for applications like food and beverage processing, material handling, textile machinery, and packaging lines. Key design features include an integrated Safe Torque Off (STO) circuit, sequence programming capability, and a compact book-style footprint.

As manufacturing facilities seek to maximize uptime and transition to Smart Factory IoT structures, legacy devices must eventually be phased out or upgraded. This guide provides industrial electricians, automation engineers, and maintenance managers with the critical technical information required to successfully replace an aging or failed ABB ACS355 drive.

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Legacy Product Information

Initially introduced to meet high-performance machinery needs, the ACS355 spans a comprehensive power range. Understanding its baseline hardware specification is critical to sourcing a correct physical and electrical drop-in replacement.

• Power Range:
  • 1-phase 200–240 V: 0.37 to 2.2 kW (0.5 to 3 hp)
  • 3-phase 200–240 V: 0.37 to 11 kW (0.5 to 15 hp)
  • 3-phase 380–480 V: 0.37 to 22 kW (0.5 to 30 hp)
• Control Modes: Scalar Control, Sensorless Vector Control (both induction and permanent magnet motors)
• Standard Enclosures: IP20 / open type, optional NEMA 1 kit, and IP66/IP67/UL Type 4X variables for harsh washdown environments.
• Frame Sizes: R0, R1, R2, R3, R4.
• Lifecycle Status: The ACS355 is currently in the Classic phase of the ABB PLC/Drive product lifecycle. While still supported with spare parts and services, new units are subject to longer lead times and higher price points. Complete transition to the Limited phase is planned, making legacy migration highly recommended for long-term plant reliability.

Output Part Number Coding Profile (Example: ACS355-03E-08A8-4)

• ACS355: Product Series
• 03: 3-Phase Input (01 = 1-Phase Input)
• E: EMC Filter Included, 50Hz (U = No EMC Filter, 60Hz US/Can)
• 08A8: Nominal Current Rating (e.g., 08A8 = 8.8 Amps)
• 4: Rated Voltage (4 = 380–480 VAC, 2 = 200–240 VAC)

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Recommended Replacements

When planning an upgrade or direct replacement for the ACS355, three primary alternative solutions are available depending on the application complexity and configuration.

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Compatibility Considerations

Upgrading from the ACS355 to a recommended platform (like the ACS380) requires meticulous review of mechanical, electrical, and programming parameters.

1. Physical Footprint and Mounting

The ACS355 uses a narrow, book-style structure. While the replacement ACS380 drive series maintains a similar side-by-side mounting capability, the dimensions are not identical.

• ACS355 Frame R1 (IP20): Dimensions are approximately 169 mm (H) x 70 mm (W) x 161 mm (D).
• ACS380 Frame R1 (IP20): Dimensions are approximately 223 mm (H) x 70 mm (W) x 176 mm (D). You must verify that your electrical cabinet has the necessary vertical clearance (additional height) and depth clearance before retrofitting.

2. Control Terminal Remapping

The control terminal architectures differ between these generations.

• ACS355 standard I/O Layout: Features 5 Digital Inputs (DI1-DI5), 1 Analog Input (AI1), 1 Analog Output (AO), and 1 Relay Output (RO).
• ACS380 Standard I/O (using BMIO-01 module): Contains 4 Digital Inputs (DI1-DI4), 2 Analog Inputs (AI1, AI2), 1 Analog Output (AO), 1 Digital Output (DO), and 1 Relay Output (RO). Adjusting the control cabinet schematic is required to maps DI5 or other bespoke configuration functions to the new layout.

3. Fieldbus Communications

The ACS355 utilizes external plug-in options like the FMBA-01 (Modbus RTU), FCAN-01 (CANopen), or FENA-11/21 (Ethernet/IP, PROFINET). The ACS380 integrates pre-configured fieldbus adapters directly in specific stock models (e.g., ACS380-04XS-xxxx-x models feature built-in EtherNet/IP, PROFINET, or Modbus RTU). Ensure you select the exact variant that matches your system’s communication bus.

4. Software Programming and Parameters

• Legacy Tools: DriveWindow Light and FlashDrop tool.
• Modern Tools: Drive Composer (via USB interface on the assistant control panel or integrated RJ45 port). Legacy parameter files (.dwg or .dp5) cannot be loaded directly into newer drives. Group configurations must be manually translated. For example, legacy Group 99 (Start-up data), Group 10 (Start/Stop), and Group 11 (Reference Select) correspond to different addresses in the modern ABB common drive architecture (such as Group 99, Group 20, and Group 22 in the ACS380 platform).

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Upgrade Benefits

Replacing your legacy ACS355 drive yields immediate operational and capital expenditure benefits:

• Adaptive Programming: While the ACS355 had basic sequence programming, the ACS380 supports built-in adaptive programming. This allows users to customize PLC-like logic blocks inside the drive without dedicated external control logic, saving space and external hardware costs.
• Energy Efficiency Tracking: Newer drives offer integrated energy optimizers, calculating exact kilowatt-hour savings, carbon dioxide emission reductions, and accurate monetary savings profiles.
• Bluetooth Connectivity: Modern assistant panels are Bluetooth-enabled, allowing maintenance technicians to configure, monitor, and troubleshoot drives safely outside of arc-flash zones using the ABB Drivetune mobile application.
• Superior Motor Control: Advanced motor control algorithms provide seamless control over traditional Induction Motors (IM), Permanent Magnet (PM) motors, and high-efficiency Synchronous Reluctance Motors (SynRM).

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Common Migration Challenges

• Phase-out of Sequence Programming: If your ACS355 utilizes sequence programming via Parameter Group 84, this code will need to be redesigned using the visual adaptive programming tool inside ABB Drive Composer.
• STO Terminal Logic Realignment: The STO circuit on the ACS355 uses standard Safe Torque Off Terminals 33 (OUT), 34 (SGND), 35 (IN1), and 36 (IN2). On the ACS380, safe inputs are designated as S1, S2, and SGND. Incorrect bridge configurations during migration will trigger permanent "STO active" faults (Fault 5091).
• NEMA 1 / IP21 Conduit Fitting Configurations: Standard open IP20 drives require differing physical gland plates and cover expansions. Verify the legacy conduit footprint matches if the drive is not mounted inside a dedicated cabinet.

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Step-by-Step Replacement Procedure

Follow these steps to safely swap your ACS355 machinery drive:

[Lockout/Tagout (LOTO)] -> [Backup Settings] -> [Label & Disconnect Wires] -> [Physical Swap] -> [Wiring Reconnection] -> [Testing & commissioning]

Step 1: Secure Lockout-Tagout (LOTO)

Ensure all power sources to the machine or cabinet are turned off. Adhere strictly to OSHA lockout-tagout protocols. Measure AC input terminal voltage (U1, V1, W1) and DC bus terminals (UDC+, UDC-) to verify the charge has fully dissipated (wait at least 5 minutes after disconnecting power to allow internal capacitors to discharge below 50 VDC).

Step 2: Backup Existing Parameter File

If the legacy drive is still operational:

1. Connect a PC with DriveWindow Light software via the USB-to-RJ45 connection cable, or plug in an ACS-CP-A basic control panel.
2. Select Upload Parameter Set from the menu structure.
3. Save the resulting backup file (.dwg format) to secure storage.
4. Export a parameter listing to PDF or CSV format to serve as a fast physical reference document.

Step 3: Label and Disconnect Grounding and Wiring

1. Carefully tag every wire with its corresponding terminal number.
2. Unplug the I/O terminal strip blocks if your drive frame allows, or loosen individual terminal screws.
3. Disconnect the motor output leads (U2, V2, W2) and basic ground connection.
4. Disconnect the main AC power input lines (U1, V1, W1).
5. Remove any external fieldbus adapters or communication connections.

Step 4: Mechanical Replacement

1. Loosen the mounting fasteners from the DIN rail or backplate mounting hardware.
2. Remove the legacy ACS355 unit.
3. Align the replacement drive’s mounting pattern on the backplate. If migrating to the ACS380, pre-drill new pilot holes if using screw-mounting, or secure onto standard 35 mm symmetric DIN rail.
4. Ensure adequate clearances: Keep standard recommended vertical margins (typically 75 mm top and bottom) for proper convective cooling flow.

Step 5: Wiring Installation

1. Connect the chassis protective earth (PE) grounding terminals first.
2. Connect input power mains cables to terminals L1, L2, L3 (or U1, V1, W1 depending on model labeling).
3. Connect output motor lines to T1/U, T2/V, T3/W (U2, V2, W2).
4. Connect STO terminals. Wire STO dual loops using modern S1/S2 functional safe loops.
5. Re-terminate your control line I/O cables. Re-verify the mapping for analog inputs (AI), digital inputs (DI), and relay interfaces.

Step 6: Initial Power-up and Commissioning

1. Switch on the main supply power to the drive.
2. Use the primary startup assistant located on the assistant control panel (or connect via Drive Composer Software).
3. Enter motor nameplate properties: nominal voltage, current, frequency, RPM speed, and kW rating.
4. Configure motor control parameters manually by utilizing the reference configuration sheet exported in Step 2.
5. Perform an Identification Run (ID Run) in uncoupled state to calibrate the drive’s vector algorithm to the motor characteristics.
6. Verify rotational direction; if incorrect, safely power down and swap two phases of the output motor wires (or change the state of motor direction parameter 99.08/equivalent).

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Frequently Asked Questions

Q1: Can I use my existing ACS-CP-A control panel on the new ACS380 drive?

No. The ACS355 uses older legacy control panels (such as the ACS-CP-A or ACS-CP-U). The ACS380 utilizes modern assistant panels (such as the BMOP-01 or BIO-01 integrated options) and does not support physical mating or RJ45 communication protocols of the legacy panel series.

Q2: How do I handle sequence programming migration?

The sequence programming in the ACS355 (Group 84) must be rebuilt. The newer ACS380 platform utilizes standard Adaptive Programming, which is configured using a visual, block-diagram editing space within the free Drive Composer Entry software.

Q3: What is the direct replacement for IP66 / NEMA 4X ACS355 models?

For heavy washdown IP66/IP67 scenarios, ABB offers specific field-mount configurations of the ACS380 series, or suggests moving up to the industrial ACS880 machinery class or utilizing dedicated external system enclosures rated to protect standard IP20 drives.

Q4: Will my existing EMC filters work with a replacement drive?

Generally, yes, if external or line filters are used. However, it is highly recommended to specify the new drive model with an internal, integrated category class EMC filter (e.g., matching the 'E' filter code rating of the original drive configuration) to maintain compliance and save panel space.

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Related Products & Families

To complete your system integration and support your network, several related products are frequently matched with these industrial machinery drives:

• ABB ACS150 Series: Micro drives optimized for basic, low-complexity machinery tasks.
• ABB ACS580 Series: Standard general-purpose drives, widely used for comprehensive wall-mount or cabinet installations.
• ABB ACS880 High-Performance Series: Industrial-grade drives with premium vector and Direct Torque Control capabilities.
• SOT-xx/FEIP-x Series Communication Modules: Options designed to bridge industrial Ethernet protocols into distributed control networks.

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Need Help?

Navigating legacy component phase-outs requires both technical expertise and ready access to critical inventory. We can assist in scaling automation migration paths, avoiding long downtime periods, and acquiring necessary hardware.

Palm Parts Solution specializes in sourcing new, refurbished, and obsolete surplus industrial automation parts, complete with comprehensive warranty protection. Contact our technical team today to source direct replacement ABB ACS355 parts, fieldbus option modules, or to purchase recommended next-generation successor drives.