Electromechanical thermostat ET4420

programmablerelayterminal block

PID Digital Thermostat 48x48mm ET4420; 48 x 48mm sized. Selectable dual setpoint. Selectable thermocouple types. Automatic calculation of PID parameters. (SELFTUNE). Three different specifications can be assigned to digital input. Three different specifications can be assigned to F function key. Soft-Start feature. Zero point input shift. In the case of sensor failure, manually, periodical or auto-periodical control can be selected. RS485 ModBus protocol communication feature.(optional) CE marked according to European Norms. Selectable SSR control output. C/A2 Relay output programmable as secondary alarm or control output. A1 Relay output programmable as primary alarm or PID cooling output. Selectable heating/cooling control. Environmental Conditions Ambient/storage temperature - 0 ... +50°C/-25... +70°C (with no icing) Max. Relative humidity - Relative humidity 80% for temperatures up to 31°C decreasing linearly to 50% relative humidity at 40°C. Rated pollution degree - According to EN 60529 Front panel : Ip65, Rear panel : Ip20 Height - Max. 2000m