ABB 07KT98 GJR5253100R0278 Programmable Controller | Replacement, Equivalent & Selection Guide
The ABB 07KT98 (Part No. GJR5253100R0278) is a CPU module from ABB’s Advant Controller AC31 series — a proven, compact PLC platform widely deployed in industrial automation, process control, and machine building applications. This page provides complete technical specifications, compatible replacement options, and a structured selection guide to help engineers and procurement teams make confident sourcing decisions.
Technical Specifications
- Manufacturer: ABB
- Model Number: 07KT98
- Part Number: GJR5253100R0278
- Series: Advant Controller AC31
- Module Type: CPU / Central Processing Unit
- Program Memory: 256 KB (expandable via memory card)
- Data Memory: 128 KB RAM
- Communication Ports: RS-232, RS-485, PROFIBUS-DP (optional)
- I/O Capacity: Up to 512 digital I/O / 64 analog I/O (via expansion)
- Programming Standard: IEC 61131-3 (LD, FBD, IL, ST, SFC)
- Power Supply: 24 V DC
- Operating Temperature: 0 °C to +55 °C
- Storage Temperature: −25 °C to +70 °C
- Humidity: 5–95% RH, non-condensing
- Protection Rating: IP20
- Dimensions (W × H × D): Approx. 40 × 130 × 115 mm
- Weight: Approx. 400 g
- Certifications: CE, UL
Compatible Replacement & Equivalent Models
When the 07KT98 is discontinued or unavailable, the following models are commonly evaluated as functional replacements. Always verify firmware compatibility and I/O mapping before substitution:
- ABB 07KT97 (GJR5253100R0268) — Previous-generation AC31 CPU; reduced memory, same backplane pinout
- ABB 07KT99 (GJR5253100R0288) — Next-generation AC31 CPU; enhanced memory and communication options
- ABB AC500 PM554-T-ETH — Modern successor platform; requires program migration but offers Ethernet and expanded I/O
- Siemens S7-200 CPU 224 — Cross-brand alternative for simple discrete control; different programming environment
- Schneider Electric Modicon M221 — Compact PLC alternative; evaluate I/O count and communication protocol compatibility
Note: Cross-brand replacements require full system re-engineering. Konmask recommends same-series ABB replacements for drop-in compatibility.
Why Choose the Original Model
- Drop-in hardware compatibility: Same backplane, same wiring — no panel modification required
- Program portability: Existing 907 AC 131 / Automation Builder projects load without rewrite
- Proven reliability: MTBF >100,000 hours in continuous industrial operation
- Spare parts ecosystem: Extensive AC31 I/O modules, power supplies, and communication cards remain available
- Regulatory continuity: Maintains existing CE/UL certification footprint for certified machinery
Typical Applications
- Water and wastewater treatment plant automation
- HVAC and building management systems (BMS)
- Conveyor and material handling control
- Packaging and filling machine OEM builds
- Pump station and lift station control panels
- Textile and paper mill process control
- Retrofit and modernization of legacy ABB AC31 installations
System Compatibility
- Compatible I/O Modules: ABB 07AI60, 07AO10, 07DI92, 07DO92, 07DC91 and full AC31 I/O range
- Compatible Power Supplies: ABB 07SK50, 07SK60 series
- Compatible Communication Modules: 07KP60 (PROFIBUS-DP), 07KP90 (Ethernet)
- Programming Software: ABB 907 AC 131 (legacy), ABB Automation Builder (current)
- HMI Compatibility: ABB CP600 series, third-party Modbus/RS-485 HMI panels
- Backplane: AC31 standard DIN-rail mounting rack
Selection Guide
Use the criteria below to confirm the 07KT98 is the correct module for your application:
- Step 1 — Verify part number: Confirm GJR5253100R0278 on the module label or existing BOM
- Step 2 — Check memory requirements: 07KT98 provides 256 KB program / 128 KB data; upgrade to 07KT99 if more is needed
- Step 3 — Confirm communication protocol: RS-485 native; add 07KP60 for PROFIBUS-DP or 07KP90 for Ethernet
- Step 4 — Count I/O points: AC31 supports up to 512 DI/DO and 64 AI/AO via expansion modules
- Step 5 — Assess environment: Confirm ambient temperature ≤55 °C and humidity ≤95% RH non-condensing
- Step 6 — Evaluate migration need: If upgrading to AC500, budget for program migration and panel re-wiring
Quality Assurance & Sourcing
- Source: Genuine ABB-manufactured modules; no counterfeit or refurbished stock
- Inspection: Each unit tested for power-on, communication, and I/O response before shipment
- Packaging: Anti-static ESD bag + foam-lined carton; original ABB packaging where available
- Traceability: Serial number and date code recorded for every shipment
- Warranty: 12-month replacement warranty against manufacturing defects
- Lead Time: In-stock units ship within 2 business days; contact us for volume orders
How to Order
- Online: Add to cart directly on this page — secure checkout via Konmask.com
- Email RFQ: Send part number, quantity, and delivery address to support@konmask.com
- Phone / WhatsApp: +0086 19859288691 (Mon–Sat, 09:00–18:00 CST)
- Bulk / OEM pricing: Available for orders of 5+ units — request a formal quotation
Replacement & Compatibility FAQ
Q: Is the 07KT98 still in production?
A: The AC31 series has reached end-of-active-production. Konmask maintains stock of genuine new and surplus units to support ongoing maintenance needs.
Q: Can I replace a 07KT97 with a 07KT98 without rewiring?
A: Yes — both modules share the same backplane pinout and DIN-rail form factor. A firmware/program review is recommended before hot-swapping.
Q: Does the 07KT98 support Ethernet natively?
A: No. Native ports are RS-232 and RS-485. Ethernet connectivity requires the optional 07KP90 communication module.
Q: What programming software is required?
A: ABB 907 AC 131 (legacy) or ABB Automation Builder with AC31 library. Both support IEC 61131-3 languages.
Q: Can I migrate my AC31 program to ABB AC500?
A: Yes, with engineering effort. ABB provides migration tools within Automation Builder, but I/O mapping and function block libraries must be re-validated.
Q: What is the warranty on units purchased from Konmask?
A: 12 months from shipment date, covering manufacturing defects. DOA units are replaced within 5 business days.
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Contact: support@konmask.com | +0086 19859288691
