ABB 07KT93 Basic Unit | GJR5251300R0161 Advant Controller 31 PLC

The ABB 07KT93 (GJR5251300R0161) is a versatile and compact central processing unit (CPU) belonging to the Advant Controller 31 (AC31) series. Designed for small to medium-sized automation applications, this basic unit integrates high-speed logic processing with a generous array of onboard digital and analog I/O. It serves as an efficient standalone controller or as a distributed station within a larger network via the integrated CS31 system bus, making it a staple for decentralized industrial control architectures.

Product Specifications and Datasheet

• Model Designation: 07KT93
• Product ID: GJR5251300R0161
• Module Type: Programmable Logic Controller (PLC) Basic Unit
• System Series: Advant Controller 31 (AC31) / Series 90
• Program Memory: 128 kB RAM (Battery backed) / 128 kB Flash EPROM
• Onboard I/O Capacity: 24 Digital Inputs, 16 Digital Outputs, 4 Analog Inputs, 2 Analog Outputs
• Communication Ports: 1x CS31 System Bus, 2x Serial Interfaces (COM1/COM2)
• Supply Voltage: 24 V DC (Functional range 19.2 V to 30 V DC)
• Dimensions: 140 mm (Height) x 240 mm (Width) x 85 mm (Depth)
• Weight: 1.1 kg (Approx. 2.42 lbs)
• Country of Origin: Germany
• Programming Software: 907 AC 1131 / 907 PC 331

Application Areas

The 07KT93 is highly regarded for its reliability in diverse industrial sectors:

• Machine Building: Controlling specialized packaging machines, textile looms, and wood-processing equipment.
• Building Automation: Managing HVAC systems, lighting control, and automated access systems in large commercial complexes.
• Water Management: Coordinating small-scale pumping stations, filtration logic, and chemical dosing systems.
• Food & Beverage: Supervising mixing tanks, bottling lines, and temperature-controlled storage units.

Product Operating Instructions

The 07KT93 should be mounted on a standard 35 mm DIN rail or secured directly to a cabinet mounting plate. Ensure the operating environment is within the specified temperature range (0°C to 55°C) and that the cabinet provides adequate ventilation. When wiring the 24V DC power supply, use a stabilized source to prevent logic resets during voltage dips. The onboard analog inputs are configurable; ensure that the jumpers or software settings match the sensor type (e.g., 0–10V or 4–20mA) before commissioning. For data retention during power outages, verify that the lithium battery is correctly installed and that the “Battery” LED is not illuminated red. Communication with a PC for programming is achieved through the COM1 port using an ABB-certified serial cable.

Q&A: Frequently Asked Questions

Q1: What is the primary difference between the 07KT93 and the 07KT94? A1: The 07KT93 is generally the base model with standard memory and I/O, whereas the 07KT94 often features expanded program memory and enhanced processing speeds for more complex algorithmic tasks.

Q2: Can the onboard digital outputs drive heavy inductive loads directly? A2: No. While the outputs are short-circuit proof, it is best practice to use interposing relays for high-current or highly inductive loads (like large solenoid valves) to protect the PLC’s internal circuitry.

Q3: How do I reset the module if I lose the password to the user program? A3: A factory reset can typically be performed via the programming software or by removing the backup battery and power for an extended period, though this will completely erase the resident application program.

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