Product ~DISCONTINUED~
Controller with Dual setpoint|Supply voltage: 12~24VAC 12~35VDC|Display: 3-digit red LED|Operating Ambient: 0~40°C, 35~95%RH|#Input: 1 configurable|Control action: ON/OFF; PID|Sealing: IP54|Ouputs: 2 Realys + SSR
The ATR121 is a dual-setpoint controller with a 3-digit red LED display. The input is configurable for thermocouples type J, K, S & R; Pt100; PTC1000; Ni100; NTC10k (typically used in the refrigeration industry); Pt500/Pt1000 (widely used in air-conditioning); 0 to 1V; 0 to 10V; 0 to 20mA and 4 to 20mA. Potentiometers with a full scale value of 6kO or 150kO may also be used and there is a “latch on” function for quick calibration and setting of minimum, maximum and zero via the front keys.
Two set-points are available, one for control and one for the alarm function. They can be configured to activate two relay outputs or an SSR output. The main relay for the control output is rated at 8A. The alarm relay is rated at 5A (alarm modes: threshold, band, deviation). Open/ Close logic for motorised valves is also available. Software features include ON/OFF control, PID + Autotuning and Heating-Cooling PID with a neutral zone. A single output (1 relay + SSR) version is also available.
Front of panel sealing to IP65 can be achieved using a gasket (optional). There is also an optional Memory Card to copy all of the configuration parameters from one controller to another without powering them up.
Features:
- Low-cost indicating PID controller.
- Panel mount.
- 2 setpoints.
- Universal input.
- Relay and SSR outputs.
- Universal supply voltage.
