ABB 07KT97 WT97 Advant Controller 31 Basic Unit | Replacement, Equivalent & Selection Guide
The ABB 07KT97 (WT97) is the central processing and coordination unit of the Advant Controller 31 (AC31) system — ABB’s compact, modular PLC platform widely deployed in industrial automation, process control, and building management applications. This page is your complete reference for sourcing the 07KT97 WT97, identifying verified replacement and equivalent modules, and making the right selection decision for your system.
Selection Background
When the ABB 07KT97 WT97 reaches end-of-life, becomes obsolete, or is simply unavailable through standard channels, engineers and procurement teams search for a reliable replacement or equivalent module that maintains system integrity. Understanding which alternatives are true drop-in replacements versus functional equivalents — and which cross-brand substitutes require engineering review — is critical to avoiding costly downtime. This guide captures the most common 07KT97 replacement, WT97 equivalent, and Advant Controller 31 substitute queries to help you make a confident, informed decision.
Technical Specifications
| Part Number | 07KT97 / WT97 |
| Manufacturer | ABB |
| Product Family | Advant Controller 31 (AC31) |
| Module Type | Basic Unit / CPU Module |
| Processor | 32-bit RISC processor |
| Program Memory | Up to 512 KB (application-dependent) |
| Communication Interfaces | PROFIBUS-DP, RS-232, RS-485, Ethernet (option) |
| I/O Expansion | Modular via AC31 I/O bus |
| Operating Voltage | 24 V DC |
| Operating Temperature | 0 °C to +55 °C |
| Protection Class | IP20 |
| Weight | ~800 g |
| Certifications | CE, UL (verify per revision) |
| ⚠ Key Replacement Parameters | CPU type, memory size, communication protocol, firmware version, I/O bus compatibility |
Compatible Replacement & Equivalent Models
1. Direct Drop-in Replacements
These modules are hardware and firmware compatible with the 07KT97 WT97 and can be swapped without system reconfiguration:
- ABB 07KT97 WT97 (same part, different production batch / revision) — verify firmware revision matches
- ABB 07KT98 — successor variant within AC31 family; confirm I/O bus and communication card compatibility before substitution
2. Functional Equivalents
These modules perform the same control functions but may require parameter re-mapping, firmware update, or minor wiring adjustment:
- ABB 07KT94 / 07KT95 — earlier AC31 basic units; reduced memory and I/O capacity; suitable for less complex applications
- ABB 07KT96 — mid-range AC31 CPU; verify program memory and communication interface requirements
3. Cross-Brand Alternatives
These are third-party or competing-brand modules that can substitute the 07KT97 WT97 in function but require engineering evaluation, re-programming, and system validation:
- Siemens S7-300 CPU 314 — comparable processing power; requires full program migration and I/O rewiring
- Schneider Electric Modicon M340 — functional substitute for mid-complexity AC31 applications; protocol adaptation required
- Mitsubishi Q03UDE — cross-brand alternative for PROFIBUS-DP environments; engineering review mandatory
⚠ Cross-brand substitution always requires a qualified automation engineer to validate compatibility, re-program logic, and commission the system. Konmask can assist with sourcing and technical consultation.
Why Choose the Original ABB 07KT97 WT97
- Precision & Reliability: Factory-calibrated to ABB AC31 system tolerances — no performance compromise versus generic alternatives
- Certified Compatibility: Fully validated with all AC31 I/O modules, communication cards, and expansion units
- Firmware Integrity: Original ABB firmware ensures deterministic scan times and correct execution of IEC 61131-3 programs
- OEM Certifications: CE and UL markings maintained — critical for regulated industries and insurance compliance
- ABB Technical Support: Access to ABB documentation, firmware updates, and engineering support when using genuine modules
- Warranty & Traceability: Full traceability from authorized supply chain with documented quality assurance
Typical Applications
- Water & Wastewater: Pump station control, dosing systems, and SCADA integration in municipal treatment plants
- Building Automation: HVAC control, energy management, and BMS integration in commercial facilities
- Pulp & Paper: Process sequencing, drive coordination, and quality control loops
- Food & Beverage: Batch processing, conveyor control, and CIP (Clean-in-Place) automation
- Power Generation: Auxiliary system control in thermal and hydroelectric plants
- General Manufacturing: Machine control, assembly line sequencing, and motion coordination
System Compatibility
The ABB 07KT97 WT97 is designed to operate within the Advant Controller 31 ecosystem. Compatible components include:
- 07AI91 — Analog Input Module (4 × 0–10 V / 4–20 mA)
- 07AO91 — Analog Output Module (4 × 0–10 V / 4–20 mA)
- 07DI92 — Digital Input Module (16 × 24 V DC)
- 07DO92 — Digital Output Module (16 × 24 V DC, 0.5 A)
- 07KP90 — PROFIBUS-DP Communication Module
- 07KT31 — Power Supply Unit for AC31 rack
- 07SK90 — Operator Panel / HMI Interface
Selection Guide
Before ordering a replacement or equivalent for the ABB 07KT97 WT97, confirm the following:
- Is your application a direct swap? — Verify the existing firmware version and hardware revision on your installed unit. A direct drop-in requires matching revision compatibility. Contact Konmask with your nameplate data for confirmation.
- Do you need the same communication interfaces? — Confirm whether your system uses PROFIBUS-DP, RS-232, RS-485, or Ethernet. Some equivalent models differ in available ports. Mismatched interfaces require additional communication cards.
- What is your I/O count and expansion requirement? — The 07KT97 WT97 supports a specific maximum I/O count via the AC31 bus. If your application is at or near the limit, a functional equivalent with lower capacity may not be suitable. Share your I/O list with Konmask for a free compatibility check.
📩 Not sure which model fits your system? Contact Konmask at support@konmask.com — we respond within 24 hours.
Quality Assurance & Sourcing
Konmask sources ABB 07KT97 WT97 modules through authorized distributors, certified refurbishers, and verified secondary market channels. Every unit undergoes a structured 4-step inspection process before shipment:
- Visual Inspection: Check for physical damage, corrosion, counterfeit markings, and component integrity
- Functional Test: Power-on test, communication port verification, and I/O bus handshake confirmation
- Firmware Verification: Confirm firmware version matches ABB documentation and is free from unauthorized modification
- Documentation Review: Cross-reference serial number, date code, and production batch against known authentic ABB records
Available documentation upon request: Test reports, certificate of conformity, material traceability records, and customs/export documentation.
How to Order
- Submit Your Inquiry: Email support@konmask.com or call +0086 19859288691 with your part number, required quantity, and any firmware/revision requirements
- Receive Quotation & Availability Confirmation: Konmask will respond within 24 hours with pricing, lead time, and stock status
- Confirm & Ship: Upon order confirmation, units are inspected, packed, and dispatched with full documentation
Replacement & Compatibility FAQ
Q: Can I directly replace the ABB 07KT97 WT97 with the 07KT98?
A: The 07KT98 is the successor model within the AC31 family and is functionally compatible in most applications. However, you should verify firmware compatibility and confirm that all connected I/O modules and communication cards are supported by the 07KT98 before performing the swap. Konmask can assist with pre-replacement compatibility verification.
Q: Is the ABB 07KT97 WT97 compatible with third-party PROFIBUS-DP masters?
A: Yes, the 07KT97 WT97 supports standard PROFIBUS-DP protocol and is compatible with third-party masters that conform to the EN 50170 standard. GSD file availability should be confirmed for your specific master device.
Q: What is the best substitute for the 07KT97 WT97 if the original is no longer available?
A: The best substitute depends on your application complexity and available engineering resources. For a like-for-like swap within the AC31 ecosystem, the 07KT98 is the preferred equivalent. For cross-brand substitution, Siemens S7-300 or Schneider M340 are functional alternatives but require full re-engineering. Contact Konmask to discuss your specific situation — we can often source genuine 07KT97 WT97 units from our global supply network.
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