$ 1,881.17
| Article number | 6ES7331-7TF01-0AB0 | |
| SM331, 8AI, 0/4-20MA HART | ||
| General information | ||
| Product function | ||
| ● Isochronous mode | No | |
| Supply voltage | ||
| Load voltage L+ | ||
| ● Rated value (DC) | 24 V | |
| ● Reverse polarity protection | Yes | |
| Input current | ||
| from load voltage L+ (without load), max. | 20 mA | |
| from backplane bus 5 V DC, max. | 120 mA | |
| output voltage / header | ||
| supply voltage of the transmitters / header | ||
| ● product function / supply voltage for transmitters | Yes | |
| ● supply voltage / of the transmitters / at DC / rated value | 24 V | |
| ● product feature / of the supply voltage for transmitters / short-circuit proof | Yes | |
| ● supply current / from supply voltage for transmitter / maximum | 60 mA | |
| Power loss | ||
| Power loss, typ. | 1.5 W | |
| Analog inputs | ||
| Number of analog inputs | 8 | |
| permissible input current for current input (destruction limit), max. | 40 mA | |
| Input ranges (rated values), currents | ||
| ● 0 to 20 mA | Yes | |
| — Input resistance (0 to 20 mA) | 140 Ω | |
| ● -20 mA to +20 mA | ||
| — Input resistance (-20 mA to +20 mA) | 140 Ω | |
| ● 4 mA to 20 mA | ||
| — Input resistance (4 mA to 20 mA) | 140 Ω | |
| Cable length | ||
| ● shielded, max. | 800 m | |
| Analog value generation for the inputs | ||
| Measurement principle | Sigma Delta | |
| Integration and conversion time/resolution per channel | ||
| ● Resolution with overrange (bit including sign), max. | 16 bit | |
| ● Integration time, parameterizable | Yes | |
| ● Integration time (ms) | 20 ms at 50 Hz; 16.6 ms at 60 Hz; 100 ms at 100 Hz | |
| ● Basic conversion time, including integration time (ms) | 55 ms @ 60 Hz, 65 ms @ 50 Hz, 305 ms @ 100 Hz | |
| ● Interference voltage suppression for interference frequency f1 in Hz | 10 / 50 / 60 Hz | |
| Smoothing of measured values | ||
| ● parameterizable | Yes | |
| ● Step: None | Yes | |
| ● Step: low | Yes | |
| ● Step: Medium | Yes | |
| ● Step: High | Yes | |
| Encoder | ||
| Connection of signal encoders | ||
| ● for current measurement as 2-wire transducer | Yes | |
| ● for current measurement as 4-wire transducer | Yes | |
| Errors/accuracies | ||
| Operational error limit in overall temperature range | ||
| ● Current, relative to input range, (+/-) | 0.15 % | |
| Basic error limit (operational limit at 25 °C) | ||
| ● Current, relative to input range, (+/-) | 0.1 % | |
| Interrupts/diagnostics/status information | ||
| Diagnostics function | Yes | |
| Alarms | ||
| ● Diagnostic alarm | Yes | |
| ● Limit value alarm | Yes | |
| Diagnostics indication LED | ||
| ● Group error SF (red) | Yes | |
| ● Channel fault indicator F (red) | Yes | |
| Potential separation | ||
| Potential separation analog inputs | ||
| ● between the channels | No | |
| ● between the channels and backplane bus | Yes | |
| Isolation | ||
| Isolation tested with | 500 V DC | |
| Degree and class of protection | ||
| IP degree of protection | IP20 | |
| connection method / header | ||
| required front connector | 20-pin | |
| Dimensions | ||
| Width | 40 mm | |
| Height | 125 mm | |
| Depth | 117 mm | |
| Weights | ||
| Weight, approx. | 205 g | |
