EU8420
  • Double set point

  • Selectable sensor type

  • Selectable 0-20mA, 4-20mA, 0-10V,2-10V, 0-25mV and 0-50mV input

  • PID control function with accurate self-tuning

  • Digital inputs can be assigned to 3 different feature

  • Function key can be assigned to 3 different feature

  • Soft-Start function

  • Selectable analog, SSR or relay control output

  • Selectable 0-20mA and 4-20mA analog control output

  • AL2 relay output can be programmable as second alarm or control output

  • AL1 relay output can be programmable as control or AL1 output

  • Selectable heating and cooling control

  • Input offset feature

  • In the case of probe failure periodical running or relay state can be selected

  • Communication via RS-485 ModBus protocol

  • CE marked according to European Norms

Manuals

Environmental Conditions
Ambient/Storage Temperature0...50 ºC / -25...70 ºC
Relative Humidity80% relative humidity for temperatures up to 31 °C, decreasing linearly to 50% at 40 °C
Protection DegreeAccording to EN 60529 Front panel: IP65, Rear panel: IP20
HeightMax. 2000m
Electrical Characteristics
Supply90-250V AC 50/60Hz or 9-30V DC / 7-24 VAC 50/60Hz
Power Consumption7VA
External ConnectionsPlug-in terminals
ScalePt-100 resistance thermometer -199.9...600.0 °C / -200...600 °C °C
Fe-Const (J) thermocouple -30.0....600.0 °C / -30....600 °C
NiCr-Ni (K) thermocouple -30.0...999.9 °C / -30...1300 °C
Cu-CuNi(T) thermocouple -30.0...400.0 °C / -30....400 °C
Pt10Rh-Pt (S) thermocouple -40...1700 °C °C
Pt13Rh-Pt(R) thermocouple -40...1700 °C
0-20mA, 4-20mA, 0-10V, 2-10V, 0-25mV, 0-50mV max. scale range 10000 (-1999...9999)
AccuracyResistance thermometer 0-20mA, 4-20mA, 0-10V, 2-10V, 0-25mV, 0-50mV: ±0.2% (of full scale) ± 1 digit
Thermocouples: ±0.5% (of full scale) ± 1 digit
Line ResistanceMax. 100ohm for thermocouple
Output
C/A2 OutputRelay: 250V AC, 2A (for resistive load), NO+NC (selectable as control or A2 output)
A1 OutputRelay: 250V AC, 2A ( for resistive load), NO (selectable as A1 and cooling control output)
ANL/SSR OutputMax. SSR Output: 0-20mA, 4-20mA, 24V 20mA. Max. load resistance: 600ohm (12 bit 0,2% accuracy)
Life ExpectancyMechanical 30.000.000 operations (under no load), Electrical 300.000 operations (2A at 250V AC, resistive load)
Control
Control TypeSingle set-point and alarm control
Control AlgorithmOn-Off, P, PI, PD, PID (selectable)
A/D Converter14 bit
Sampling Time100ms
Proportional BandAdjustable between 0.0% and 100.0%. If Pb=0%, On-Off control is selected
Control PeriodAdjustable between 1 and 125s
HysteresisAdjustable between 1 and 50°C/F
Output PowerThe ratio of power at a set point can be adjusted between 0% and 100%
Housing
Mounting MethodPanel mounting
DimensionsW48xH96xD87 mm
WeightApprox. 400g (after packaging)
Enclosure MaterialSelf extinguishing plastics