Panel thermostat
230 VAC, IP54 | AR1 Cognito Quam Electrotechnologies Ltd

The AR1 panel thermostat has been designed for the distributed process control environment with the following user-oriented characteristics:
Simple, stand-alone, unattended operation by non-specialist personnel,
Fully, field programmable parameters for each output,
Complete, "seamless" integration as a slave to an external master or network, and
Standard panel cut-out dimensions (per DIN 43700).

Typical applications for the AR1 are (without any other components):
Direct control of independent cooling and heating circuits,
Control of three-way valves,
Control of single cooling or heating circuit selected by external command signal, and
Thermostatic control with simultaneous driving of optical/acoustic alarms or defrosting devices.
The controller features the following resources:

Pt100 3-conductor input allowing practically unlimited cable length,
2 solid-state switch 230 VAC outputs,
12-bit A/D,
4 optoisolated bit inputs,
Serial port featuring local EIA232 and Quamatic or Modbus (link in new window) network EIA485 connection,
4-digit-plus-sign LED display, and
4 front-panel membrane switches.
The front panel is protected to IP54 and is covered by a polyester membrane. The display is visible through a suitably transparent window and the switches are of the tactile type.