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ABB 07KT94 (GJR5252100R3261) high‑performance digital‑only CPU basic unit in the Advant Controller 31 (AC31)/Procontic CS31 Series 90

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ABB 07KT94 (GJR5252100R3261) high‑performance digital‑only CPU basic unit in the Advant Controller 31 (AC31)/Procontic CS31 Series 90
May 29, 2026

ABB 07KT94 (GJR5252100R3261) high‑performance digital‑only CPU basic unit in the Advant Controller 31 (AC31)/Procontic CS31 Series 90

ABB 07KT94 is a high‑performance digital‑only CPU basic unit in the Advant Controller 31 (AC31)/Procontic CS31 Series 90, optimized for large discrete automation with extensive onboard digital I/O.

Description

Product Overview

ABB 07KT94 is a high‑performance digital‑only CPU basic unit in the Advant Controller 31 (AC31)/Procontic CS31 Series 90, optimized for large discrete automation with extensive onboard digital I/O.

Model Definition

  • 07: Procontic 90/31 / AC31 series

  • KT: CPU with transistor outputs (DC)

  • 94: High‑end digital I/O grade (Series 90)

Technical Specifications

  • Part Number: GJR5252100R3261

  • Processor: 16‑bit Motorola 68HC11

  • Power Supply: 24 VDC (18–30 VDC), ≤10 W

  • User Memory:

    • Program: 28 kB Flash EPROM

    • Data: 4.4 kB non‑volatile RAM

  • Onboard I/O:

    • Digital Inputs: 24 × 24 VDC (sink/source)

    • Digital Outputs: 16 × transistor (24 VDC/0.5 A)

    • Analog I/O: None (digital‑only)

  • High‑Speed Counter: 1 × 50 kHz

  • Communication:

    • COM1: RS‑232 (programming/ASCII)

    • COM2: RS‑485 (Modbus RTU / CS31 bus)

    • CS31 Bus: Up to 31 remote I/O modules

  • Max Expansion: 744 DI / 496 DO / 96 AI / 48 AO

  • Real‑Time Clock: Integrated (event timestamping)

  • Operating Temperature: 0 °C to +55 °C

  • Dimensions (W×H×D): 160 × 100 × 95 mm

  • Weight: ~0.8 kg

  • Certifications: CE, UL, CSA, RoHS

Interface & Indicators

  • LEDs: PWR, RUN, ERR, TX, RX, channel status (per I/O)

  • RS‑232: Programming, HMI, point‑to‑point ASCII

  • RS‑485: Modbus RTU (master/slave), CS31 system bus

  • Programming Software: 907 PC 331 / Control Builder AC31

Core Functions

  1. High‑Density Digital Control: 24DI/16DO for large discrete applications

  2. Distributed I/O: CS31 bus master (31 slaves max)

  3. Serial Communication: Modbus RTU, ASCII, CS31 protocols

  4. High‑Speed Counting: 50 kHz input for pulse/encoder signals

  5. Data Logging: RTC + non‑volatile memory, event timestamping

Key Differences from 07KT92/93

  • 07KT92: 12DI/8DO + 4AI/2AO (mixed I/O, analog capable)

  • 07KT93: 24DI/16DO, no analog, 10 kHz counter

  • 07KT94: 24DI/16DO, no analog, 50 kHz high‑speed counter (fastest in KT9x)

Applications

  • Factory automation: Large assembly lines, material handling, packaging

  • Process control: Discrete manufacturing, bottling, textile machinery

  • Machine control: Woodworking, plastics, printing equipment

  • System migration: Upgrade legacy Procontic CS31 installations

Installation & Maintenance

  • Mounting: 35 mm DIN rail or panel mount

  • Wiring: Shielded twisted pair for RS‑485/CS31

  • Backup: Use 07LE90 memory module for program backup

  • Maintenance: Annual program backup; periodic LED status check

  • Protection: Reverse‑polarity protection on power terminals; short‑circuit protection per DO channel


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