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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 |
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Weight | 0.25 kg |
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Dimensions | 13.2 × 15.4 × 5.1 cm |
INOSAKI Limited
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Bldg 114-118 Lockhart Rd.
Hong Kong
INOSAKI Sdn. Bhd.
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11900 Bayan Lepas, Penan
INOSAKI Pte. Ltd.
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No. 06-17, People’s Park Centre,
Singapore (058357)
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