Crouzet TU2R1 22.5mm Chronos 2 Timer

The Crouzet TU2R1 is a 22.5mm Chronos 2 Timer delivering precise timing control for industrial automation and process control systems. This DIN rail-mounted unit combines multi-function capability with seven adjustable timing ranges spanning 0.1 seconds to 100 hours, making it suitable for diverse delay and interval applications. The timer features two relay outputs - one instantaneous and one timed - with 8A contact rating at 250V AC/DC, enabling direct control of motors, solenoids, and other industrial loads. Built-in LED status indicators provide real-time operational feedback during active timing cycles.

Technical Specifications Timing Performance

Adjustable ranges: 0.1 s to 100 h (seven preset ranges)

Repetition accuracy: ±0.5% per IEC/EN 61812-1

Temperature drift: ±0.05% / °C

Voltage drift: ±0.2% / V

Display accuracy: ±10% at 25°C

Minimum pulse duration: 30 ms typical (100 ms under load)

Maximum reset time: 100 ms typical

Supply voltage break immunity: >10 ms Electrical Characteristics

Supply options: 12V AC/DC, 24V AC/DC, or 240V AC (50/60 Hz)

Operating range: 85–110% Un (85–120% Un for 12V AC/DC)

Power consumption: 0.6 W at 24V AC/DC; 1.5 W at 230V AC

Output: Two changeover relays (AgNi contacts, cadmium-free)

Contact rating: 8A at 250V AC/DC

Minimum breaking current: 10 mA / 5V DC

Electrical life: 10⁵ operations at 8A 250V resistive load

Rated power: 2000 VA / 80 W Control & Interface

Volt-free contact input or 3-wire PNP output (maximum 0.4V residual)

Screw terminal connections

External power supply option for control input

Key Features

Seven timing ranges accommodate millisecond-to-hour-scale intervals

Dual relay outputs enable simultaneous timing and instantaneous switching

Temperature and voltage compensation ensure ±0.05% / °C and ±0.2% / V stability

AgNi relay contacts eliminate cadmium contamination concerns

Compact 22.5mm width optimizes control cabinet space allocation

LED indicators (green operation, yellow during timing cycle)

Typical Applications

Motor soft-start and overload delay sequences

Solenoid valve actuation with variable hold times

Process sequencing and dwell-time control

Alarm and shutdown delay functions

Industrial automation state-machine transitions

Compatibility & Integration The TU2R1 accepts 12V, 24V, and 240V supplies with ±10–20% tolerance, supporting both AC and DC applications. Volt-free and PNP control inputs enable integration with mechanical switches, proximity sensors, and solid-state logic outputs. AgNi relay contacts handle resistive, inductive, and lamp loads up to 8A and 250V.