Keyence KV-10T Micro Programmable Logic Controller
The Keyence KV-10T is an ultra-compact programmable logic controller (PLC) from the Keyence KV series, designed for space-constrained automation applications. With a weight of just 125 grams, the KV-10T is one of the smallest programmable controllers available, making it ideal for embedding within machinery, small control panels, and OEM equipment where installation space is at a premium. The transistor output version provides high-speed switching capability suitable for controlling solenoid valves, indicator lights, small relays, and solid-state devices.
I/O Configuration
The KV-10T base unit provides a total of 10 built-in input/output points, consisting of 6 discrete inputs and 4 transistor outputs. The inputs are configured for sinking (NPN) operation, accepting 24 V DC signals with a current consumption of 7 mA for inputs 000 to 005. The outputs are transistorized, sourcing type, and are rated for switching DC loads such as indicator lamps, small contactors, and solid-state relays. The output current rating per point is sufficient for direct control of many low-power industrial devices without requiring intermediate relays. All I/O points are accessible via the front terminal block, which uses a clamping design for secure wire retention.
Processing Speed and Program Memory
The KV-10T executes basic I/O instructions in a minimum of 1.0 microseconds, with an average execution time of 1.92 microseconds per instruction. Average program memory consumption is approximately 500 steps per program, though the overall memory capacity supports up to 3000 steps for larger control routines. This processing speed is sufficient for fast-sequence control applications, such as pick-and-place operations, simple indexing tables, and high-speed sorting systems. The combination of compact size and rapid scan rates makes the KV-10T suitable for applications where the PLC must be placed near the controlled machinery to minimize wiring distances.
Expansion Capability
Despite its small size, the KV-10T supports expansion through the Keyence KV series expansion system. A range of expansion units is available to increase I/O count, add analog capabilities, or provide specialized functions such as high-speed counter inputs or positioning outputs. Using expansion units, the total I/O count can be increased to meet the needs of more complex automation tasks while maintaining the compact form factor of the base unit. Expansion units are connected via a dedicated bus cable, with the system automatically recognizing added modules upon power-up. The analog I/O units provide 12-bit resolution, suitable for monitoring and controlling pressure, flow, level, or other analog process variables.
Power Supply and Environmental Ratings
The KV-10T operates from a 24 V DC power supply, making it compatible with standard industrial control voltages. Input 000 to 005 draw 7 mA, while inputs 006 to 007 and 008 to 009 may have different current requirements depending on the specific product variant. For the KV-10T (transistor output type), the outputs are designed for sink/source operation depending on external wiring. The PLC is designed for indoor use within a protected enclosure, with an operating temperature range typical of industrial electronics. The housing material is flame-retardant plastic suitable for installation in control cabinets without additional fire suppression beyond standard requirements.
Programming Environment
Programming of the KV-10T is performed using Keyence's KV Studio software environment, which supports ladder diagram programming with a user-friendly graphical interface. The software provides online monitoring, forced I/O operation, program upload/download, and documentation features. The KV-10T supports both serial and USB programming connections, depending on the specific hardware interface available. The software includes built-in diagnostic tools for troubleshooting field wiring and program logic, as well as simulation capabilities for offline program testing before deployment. For applications requiring real-time data exchange, the KV series supports serial communication protocols including Modbus, allowing integration with HMI panels, SCADA systems, and other PLCs.
Applications and Suitability
The KV-10T is particularly well-suited for small automated machinery, including packaging equipment, labeling machines, small assembly stations, conveyor sections, test fixtures, and prototype automation cells. Its compact dimensions allow mounting directly on the machine frame or inside small junction boxes, reducing the need for a dedicated large control cabinet. The transistor outputs are optimized for high-speed switching, making the KV-10T appropriate for applications requiring frequent output cycling, such as pick-and-place actuators, air solenoid valves, and stepper motor controllers using external drivers. For applications requiring relay outputs, the KV-10R variant provides mechanical relay switching with higher surge current capability.
Reliability and Long-Term Support
Keyence manufactured the KV series over a prolonged period, with the KV-10T being a mature product well-proven in industrial environments. The PLC is designed with solid-state components and no moving parts, resulting in high reliability and long service life with minimal maintenance. The memory type is EPROM, ensuring program retention during power cycles without requiring battery backup, though battery-backed versions are available for applications requiring data retention across extended power outages. Replacement units are available through Keyence and authorized distributors, with service life typically exceeding ten years in normal operating conditions.
