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CNC LED Lighting Lamps
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48x96 mm Size, Selectable PT 100 or Thermocouple Input, SSR + 2 Relay Outputs, PID Temperature Controller
ET8420
Selectable dual setpoint entry
Selectable sensor types (Pt-100, J, K, L, T, S, R)
Automatic calculation of PID parameters (SELF TUNE)
Three configurable digital inputs
Three configurable function keys
Soft-Start feature
Selectable SSR control output
C/A2 relay output that can be used as second alarm or temperature control output
A1 relay output that can be used as first alarm or PID cooling output
Selectable heating/cooling control
Offset feature for input
Selectable relay positions for probe failure or periodic and automatic operation
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 decreases linearly to 50% at 40 °C |
Protection Class | According to EN 60529 standard: Front panel: IP65, Rear panel: IP20 |
Altitude | Up to 2000m |
Supply Voltage | 90-250V AC 50/60Hz or 10-30V DC / 8-24V AC |
Power Consumption | 5VA |
Connection | Socket terminal |
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% (of full scale) ±1 digit (for thermocouples), ±0.2% (of full scale) ±1 digit (for Pt-100 resistance thermometers) |
Line Resistance | Maximum 100ohm |
C/A2 Output | Relay: 250V AC, 8A (for resistive load), can be selected as NO+NC control or Alarm2 output |
A1 Output | Relay: 250V AC, 8A (for resistive load), can be selected as NO (for Alarm1 and Cooling control output) |
SSR Output | 24V, 20mA |
Relay Life | No load 30,000,000 switching; 250V AC, 2A resistive load 300,000 switching |
Control Mode | Single setpoint 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, On-Off control is selected |
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 | Clamped onto TH 35 rail |
Dimensions | G48xY96xD87 mm |
Weight | Approximately 400g (with packaging) |
Enclosure Material | Self-extinguishing plastics used |