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48x48 mm Sized, Selectable PT-100 or Thermocouple Input, SSR + 2 Relay Outputs, PID Temperature Control Device
ET4420
Selectable dual set value input
Selectable sensor types (Pt-100, J, K, L, T, S, R)
Automatic calculation of PID parameters (SELF TUNE)
Three assignable functions for digital input
Three assignable functions for F function key
Soft-Start feature
Selectable SSR control output
C/A2 relay output, usable as second alarm or temperature control output
A1 relay output, usable as first alarm or PID cooling output
Selectable Heating/Cooling control
Offset feature for input
Selectable relay positions or periodic and automatic periodic operation for probe failure
Communication via RS-485 ModBus protocol
CE marked according to EN standards
Ambient/Storage Temperature | 0...50 °C / -25...70 °C |
Relative Humidity | Up to 80% at 31°C, then linearly decreasing to 50% at 40°C |
Protection Class | According to EN 60529 standard: Front panel: IP65, Rear panel: IP20 |
Height | Up to 2000m |
Power Supply Voltage | 90-250V AC 50/60Hz or 10-30V DC / 8-24V AC |
Power Consumption | 5VA |
Connection | Screw terminal block |
Scale | Pt-100 resistance thermometer -199.9...600.0 °C / -200...600 °C Fe-Const (J) thermocouple -30...600 °C / -30.0...600.0 °C NiCr-Ni (K) thermocouple -30...1300 °C / -30.0...-999.9 °C Fe-CuNi (L) thermocouple -30...600 °C / -30.0...-600.0 °C Cu-CuNi (T) thermocouple -30...400 °C / -30.0...-400.0 °C Pt10Rh-Pt (S) thermocouple -40...1700 °C Pt13Rh-Pt (R) thermocouple -40...1700 °C |
Accuracy | ±%0.5 (full scale) ±1 digit (for thermocouples), ±%0.2 (full scale) ±1 digit (for Pt-100 resistance thermometer) |
Line Resistance | Maximum 100ohm |
C/A2 Output | Relay: 250V AC, 8A (for resistive load), NO+NC control or Alarm2 output selectable |
A1 Output | Relay: 250V AC, 8A (for resistive load), NO (Alarm1 and Cooling control output selectable) |
SSR Output | 24V, 20mA |
Relay Life | No load 30,000,000 switching; 250V AC, 2A resistive load 300,000 switching |
Control Mode | Single set-point and alarm control |
Control Method | On-Off, P, PI, PD, PID (selectable) |
A/D Converter | 12 bit |
Sampling Time | 100ms |
Proportional Band | Adjustable between 0.0% and 100.0%. Pb=%0.0 will select On-Off control |
Control Period | Adjustable between 1 and 250 seconds |
Hysteresis | Adjustable between 1 and 50 °C/F |
Output Power | Adjustable between 0% and 100% of the set value |
Mounting Type | Mounted on TH 35 type rail |
Dimensions | G48xY48xD87 mm |
Weight | Approximately 250g (packed) |
Enclosure Material | Self-extinguishing plastics used |