Description
Technical Specifications
| Parameter | Details |
|---|---|
| Product Model | 07KT94H |
| Manufacturer | ABB |
| Controller Family | Advant Controller 31 / AC31 |
| Product Type | PLC basic unit |
| Supply Voltage | 24 V DC documented for the 07 KT 94 family |
| Integrated Digital Inputs | Family documentation lists 24 |
| Digital Transistor Outputs | Family documentation lists 16 |
| Configurable Digital I/O | Family documentation lists 8 points |
| Analog Inputs | Family documentation lists 8 |
| Analog Outputs | Family documentation lists 4 |
| Serial Interfaces | COM1 and COM2 on documented 07 KT 94 variants |
| CS31 System Bus | Supported within the AC31 controller family |
| Exact H-Variant Ordering Code | Not independently verified |
| Operating Temperature | Verify against the manual for the exact variant |
| Mounting / Dimensions | Verify against the exact hardware revision |
The I/O and interface values above describe the documented 07 KT 94 family, not a verified specification sheet for every 07KT94H unit. Confirm the exact variant before treating them as guaranteed model-specific parameters.
Product Overview
The ABB 07KT94H is associated with the Advant Controller 31 family of programmable logic controllers used in industrial automation systems. The 07 KT 94 controller family combines program execution, onboard signal handling, and communication functions in a single basic unit. Depending on the specific hardware version and system configuration, AC31 controllers can operate as standalone controllers, CS31 bus masters, or slave units within a distributed control arrangement.
The wider 07 KT 94 family includes digital inputs and outputs, analog signal channels, serial interfaces, and support for the CS31 system bus. These capabilities make the family suitable for machine sequencing, equipment interlocks, signal acquisition, and coordination with remote I/O. However, the suffix H must not be assumed to indicate a particular temperature-input configuration or special analog measurement capability without an exact ABB datasheet. Some reseller pages publish sensor ranges and accuracy figures that are not corroborated by the manufacturer documentation reviewed.
For replacement projects, verify the complete ordering number on the installed controller, not just the front-panel model designation. Compare the hardware revision, terminal layout, supply requirements, I/O configuration, and communication options with the original unit. Also establish whether the application program and retained data have been backed up. A controller from the same family may still differ in hardware features or configuration requirements, so substitution should be based on documented compatibility rather than a similar model name.
07KT94H
Major Features and Advantages
1. Integrated PLC Control
The 07 KT 94 family is designed to execute user-defined industrial control programs. Depending on the installed application, this can include sequential operations, equipment interlocks, status processing, and coordination of connected devices. The exact capabilities of 07KT94H should be checked against its own ordering code and manual.
2. Onboard I/O Resources
Published documentation for the broader 07 KT 94 family describes integrated digital and analog I/O. This can simplify installations where the built-in channel count and signal characteristics match the application. Do not assume every channel type, range, or terminal assignment applies to the H variant without verification.
3. Serial and Distributed-System Connectivity
The documented 07 KT 94 family includes serial communication interfaces and CS31 bus functionality. These features support integration into compatible AC31 architectures. The available communication modes, configuration parameters, and connected-device limits must be checked against the exact controller variant and system documentation.
4. Support for Existing AC31 Installations
For plants maintaining legacy Advant Controller 31 systems, the 07KT94H may be relevant when the installed equipment documentation identifies that exact model. Correct identification is especially important when the controller is part of a long-running machine or process where replacing the wrong variant could require wiring or program changes.
5. Diagnostic and Maintenance Considerations
Controller troubleshooting should include power-supply checks, status indicators, program integrity, communication status, and I/O behavior. Do not attribute a system fault to the controller until the relevant external wiring, field devices, and bus connections have been checked.
Applications
- Machine automation: PLC-based sequencing, status monitoring, and interlock logic in compatible AC31 installations.
- Process auxiliaries: Discrete control and signal handling for equipment such as pumps, fans, and auxiliary machinery, subject to the installed I/O configuration.
- Distributed I/O systems: Communication with compatible CS31 devices when the controller is configured for the appropriate bus role.
- Legacy control-system maintenance: Replacement planning for existing installations where the exact 07KT94H hardware is specified.
- Serial-connected equipment: Integration with compatible devices through supported serial communication functions, subject to the actual hardware variant and protocol configuration.
These are general application categories for the controller family, not confirmation that every 07KT94H is suitable for every installation. Confirm signal ranges, channel assignments, bus settings, and controller compatibility before installation.
Related Products
| Product | Relationship |
|---|---|
| 07KT94 | Base designation for the controller family; the full variant suffix must be matched. |
| 07KT94L | Related model designation, but not automatically interchangeable with 07KT94H. |
| 07KT94 R101 | Documented family variant; confirm differences in ordering code and hardware configuration. |
| 07KT94 R161 | Another documented family variant with its own configuration details. |
| 07LE90 | Battery module referenced in 07 KT 94 family documentation; verify whether it is applicable to the installed unit. |
| 07SK92 | System cable referenced in family documentation; confirm its role in the specific installation. |
The related items provide identification leads for maintenance. They should not be treated as approved substitutes or required accessories without checking the applicable parts list.
Installation and Maintenance
Before replacing the 07KT94H, record the complete catalog number, hardware revision, terminal wiring, communication configuration, and connected CS31 devices. Back up the application program and retained configuration data wherever possible. Record active diagnostic messages before removing the controller.
Isolate the control cabinet according to site electrical-safety procedures and verify that the replacement’s supply voltage, terminal arrangement, I/O characteristics, and communication interfaces match the existing installation. Do not assume pin compatibility with the 07KT94L or another 07 KT 94 variant based on the shared family designation.
After installation, restore the approved program and settings, then test the relevant I/O channels individually. Confirm communications with connected equipment, check diagnostic indicators, and verify machine interlocks before returning the process to automatic operation. Follow the exact manual when handling any battery-backed memory or retained data.
If the replacement does not behave as expected, check the ordering code, configuration, program compatibility, and external wiring before concluding that the unit is defective.
Product Assurance
For the ABB 07KT94H, product assurance should focus on exact identification, condition transparency, and documented compatibility. The full order number is essential because the available public information does not establish a definitive ordering-code match for every H-suffix unit.
Before dispatch, inspect the label, housing, terminals, connectors, and accessible circuit-board areas. Record visible revision markings and disclose whether the unit is new, used, refurbished, or tested. Claims about origin, functional testing, warranty, or remaining service life should be supported by the actual unit’s records.
Compatibility should be confirmed against the installed controller’s hardware documentation and the original system configuration. Do not use unverified temperature-sensor ranges, measurement accuracy, or other reseller-published values as procurement requirements until they have been confirmed by ABB documentation for the exact variant.
Procurement recommendation: Request a clear photo of the controller’s complete nameplate and verify its full ABB order number before purchasing. The 07KT94H designation alone is not enough to establish all electrical specifications or guarantee direct replacement compatibility.
