

| Product Code | PLC500-51R4 | PLC500-51R8 |
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Physical Features |
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| Dimension(W×H×D) | 34 × 115 × 100 mm | |
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Power |
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| Rated input voltage | 24 V DC | |
| Input voltage range | 20.4 V~28.8 V DC | |
| Input current | 60 mA | 80 mA |
| Reverse polarity protection | Yes | |
| Bus power voltage | +5 V DC | |
| Bus power current | 50 mA | 50 mA |
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LED Indicator |
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| 24V power LED | On: 24 V DC Power Normal, Off: 24 V DC Power Unavailable | |
| SF LED | On: System down; Off: Normal, Flash: Input Signal Error | |
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Input Characteristics |
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| Input type | Module reference ground thermal resistance | |
| Number of inputs | 4 | 8 |
| Wiring | 2-wire, 3-wire and 4-wire;default: 3-wire | |
| Input Range, RTD Type (choose one) |
Pt-100 Ω, 200 Ω, 500 Ω, 1000 Ω (α=3850 ppm, 3920 ppm, 3850.55 ppm, 3916 ppm, 3902 ppm) Pt-10000 Ω (α=3850 ppm) Cu-9.035 Ω (α=4720 ppm) Ni-100 Ω, 120 Ω, 1000 Ω (α=6720 ppm, 6178 ppm) R-150 Ω, 300 Ω, 600 Ω FS Default: Pt-100 Ω (α=3850 ppm) |
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Isolation |
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Field to Logic Site to 24 V DC 24 V DC to logic |
500 V AC 500 V AC 500 V AC |
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| Common Mode Rejection | >100 dB @ 120 V AC | |
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Input resolution |
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Temperature Voltage Resistance |
0.1℃ / 0.1℉ - 15 + sign bit |
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| Measuring principle | Sigma-Delta | |
| Module update frequency (all channels) | 4 channel support 8Hz, 4Hz, 2Hz, 1Hz configured, default: 2Hz all channels | |
| 8 channel support 4Hz, 2Hz, 1Hz, 0.5Hz configured, default: 2Hz all channels | ||
| length of wire to sensor | Max. 100 m | |
| Wire loop resistance | 20 Ω, Cu-type 2.7 Ω | |
| Noise suppression | 85 dB @ 50 Hz / 60 Hz / 400 Hz | |
| Data word format | Resistance: -27 648 ~ + 27 648 | |
| Input impedance | >10 MΩ | |
| Maximum input voltage | Inputs can support a maximum voltage to 30 V DC of misconnection | |
| Resolution | 15bit + sign bit | |
| Input filter attenuation | -3 Db @ 3.6 KHz | |
| Basic error | 0.1% Fs (Resistance) | |
| Repeatability | 0.05% Fs | |
| Cold junction compensation | - | |
| Cold junction error | - | |
| Temperature Unit | Celsius / Fahrenheit can be configured, default Celsius | |
| Break detection | Support both positive and negative directions calibration, default positive calibration | |
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Diagnostic |
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| Break | 32767 (positive calibration), -32768 (negative calibration) | |
| No module supply | 32766 | |
| With integrated PID control function | - | |