AR2-28
Split Real-Time Refrigeration Controller
The AR2-28 is a split real-time defrost controller, ideal for all control cabinet systems.
With its 6 freely programmable real-time defrost times, which can also be easily modified in the Info Menu, it is particularly suitable for all applications where time-controlled and optimised energy distribution of the respective system is crucial.
Properties
- Defrost by regular cycles, or by real-time with remote start
- Sensor input selection between PTC1000 and NTC10k
- 5 relays – Relay 1 optionally for heating or cooling function
- Door contact and auxiliary input
- AUX I + AUX II each with 6 different operating modes
- 2 parameter groups for implementing two different temperature ranges or for energy saving.
- RS485 interface for integration into monitoring systems
Applications
- Control cabinet systems
- Refrigerated counters
- Wall-mounted shelving
- Cold rooms
Advantages
- All benefits of universal application + real-time controlled defrost
Technical data
| AR2-28C1Q5E-B | AR2-28C1T5E-B | |
|---|---|---|
| Display | LCD5-S | RU33 |
| Sensor type | PTC1000 (KTY81-121) / NTC10k | PTC1000 (KTY81-121) / NTC10k |
| Standard equipment | 3 x SN4B20P1…P3 | 3 x SN4K20P1…P3 |
| Sensor measuring range | -40 … +105 °C | -40 … +105 °C |
| Controller control range | -50 °C … +120 °C | -50 °C … +120 °C |
| Resolution | 0.1° | 0.1° |
| Input | Door contact / DI2 | Door contact / DI2 |
| Terminals | Screw and plug-in terminals | Screw and plug-in terminals |
| Output type | ||
| Relay 1 / N.O. contact | 16 (8)A compressor | 16 (8)A compressor |
| Relay 2 / N.O. contact | 16 (4)A defrost | 16 (4)A defrost |
| Relay 3 / N.O. contact | 8 (3)A evaporator fan | 8 (3)A evaporator fan |
| Relay 4 / N.O. contact | 7(2)A AUX I | 7(2)A AUX I |
| Relay 5 / Changeover contact | 5A AUX II / potential-free | 5A AUX II / potential-free |
| Interface | RS485 | RS485 |
| Real-time | 6 times / buffer battery > 150h | 6 times / buffer battery > 150h |
| Power supply | 230 Vac | 230 Vac |
| Dimensions WxHxD | 105 × 105 × 50 mm | 105 × 105 × 50 mm |
| Mounting dimensions | DIN rail | DIN rail |
| Front protection class | IP 40 | IP 40 |
| Certification | CE | CE |
| Display LCD5-S | Display RU33 | |
|---|---|---|
| Dimensions WxHxD | 77 × 35 × 20 mm | 169 × 38 × 25 mm |
| Mounting dimensions WxH | 71 × 29 mm | 163 × 31.5 mm |
| Front protection class | IP 55 | IP 55 |
| Operating temperature | -10 … +50 °C | -10 … +50 °C |
| LED colour | Red | Orange |
| Connection cable | FC06-15M01 (on request) | FC06-05R50 (on request) |
| Certification | CE | CE |