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.