Programmable Relay 230V AC 16 Inputs 8 Outputs T2UK

This programmable relay (logic relay) is a compact control device designed for small automation applications without an operator display or keyboard. It operates directly from 230V AC mains and provides 16 digital inputs and 8 relay outputs. The unit is suitable for replacing multiple timing relays, contactors, and simple logic circuits in lighting control, HVAC, and small machinery.

Input Specifications

16 digital inputs are 230V AC compatible (sink/source). Input voltage range: 207–253V AC, 50/60 Hz. Input current: 5 mA typical. Response time: 10 ms (selectable filter). Inputs are optically isolated (2500 Vrms) and have LED status indicators. Four inputs can be used as high‑speed counters (up to 1 kHz).

Output Specifications

8 relay outputs (SPST‑NO) rated for 8A at 250V AC (resistive), 5A at 24V DC. Maximum total current: 10 A per common (2 commons of 4 relays each). Relay mechanical life: 10 million operations; electrical life: 100,000 operations at rated load. Outputs have LED indicators and are protected by a built‑in varistor (for AC) or flyback diode (for DC).

Power Supply

The unit is powered directly from the same 230V AC line (live and neutral). Power consumption: 12 VA. It includes an internal fuse (2A, 5x20mm) and surge protection (MOV). A green LED indicates power on.

Programming and Memory

Programming is done via a PC using ladder diagram or function block software (available from the manufacturer). The unit has a micro‑USB port (Type B) for connection. Program memory: 64 KB flash (200 function blocks or 100 ladder rungs). Retentive memory: 8 KB EEPROM for counters and timers. No battery required. The real‑time clock (RTC) is optional (requires external module).

Physical and Environmental

Dimensions: 90 mm width x 110 mm height x 60 mm depth. Weight: 0.35 kg. Mounting: DIN rail (35 mm) or screw panel. Operating temperature: -20°C to +55°C; storage: -40°C to +70°C. Humidity: 10% to 90% non-condensing. Protection class: IP20 (front), IP10 (terminals). The housing is polycarbonate UL94 V‑0.

Communication

Optional RS-485 Modbus RTU module can be plugged into the side expansion slot for networking with other devices. The base unit has no onboard display or keyboard; all configuration is via PC software.

Typical Applications

Automatic door controls, pump alternation, conveyor start/stop, lighting sequences, and greenhouse ventilation. The 16/8 I/O configuration is ideal for replacing a small PLC where a simple, low‑cost relay logic is sufficient.

Standards and Certifications

CE, UL 508, and RoHS certified. The programmable relay meets EN 60947-5-1 and EN 60204-1. It is not a safety device (no redundant structure).

Ordering Information

Model reference: T2UK (16/8 programmable relay, 230V AC). Includes terminal blocks and a programming cable (USB). Manual: T2UK User Manual (Doc. T2UK-EN-V1).