$ 461.19 – $ 563.20
Ex analog input modules are used for the connection of intrinsically-safe analog equipment from the Ex field.
Article number | 6ES7331-7RD00-0AB0 | 6ES7331-7SF00-0AB0 |
SIMATIC S7, SM 331 ANALOG INPUT | SIMATIC S7, SM 331 ANALOG INPUT | |
Supply voltage | ||
Load voltage L+ | ||
● Rated value (DC) | 24 V | 24 V |
● Reverse polarity protection | Yes | |
Input current | ||
from load voltage L+ (without load), max. | 250 mA | |
from backplane bus 5 V DC, max. | 60 mA | 120 mA |
output voltage / header | ||
supply voltage of the transmitters / header | ||
● supply voltage / of the transmitters / at DC / rated value | 13 V; at 22 mA | |
Power loss | ||
Power loss, typ. | 3 W | 0.6 W |
Analog inputs | ||
Number of analog inputs | 4 | 8; 8x thermocouples; 4x RTD thermoresistors |
permissible input current for current input (destruction limit), max. | 40 mA | |
Input ranges | ||
● Voltage | No | Yes |
● Current | Yes | No |
● Thermocouple | No | Yes |
● Resistance thermometer | No | Yes |
● Resistance | No | Yes |
Input ranges (rated values), voltages | ||
● -1 V to +1 V | Yes | |
— Input resistance (-1 V to +1 V) | 10 MΩ | |
● -25 mV to +25 mV | Yes | |
— Input resistance (-25 mV to +25 mV) | 10 MΩ | |
● -250 mV to +250 mV | Yes | |
— Input resistance (-250 mV to +250 mV) | 10 MΩ | |
● -50 mV to +50 mV | Yes | |
— Input resistance (-50 mV to +50 mV) | 10 MΩ | |
● -500 mV to +500 mV | Yes | |
— Input resistance (-500 mV to +500 mV) | 10 MΩ | |
● -80 mV to +80 mV | Yes | |
— Input resistance (-80 mV to +80 mV) | 10 MΩ | |
Input ranges (rated values), currents | ||
● 0 to 20 mA | Yes | |
— Input resistance (0 to 20 mA) | 50 Ω | |
● 4 mA to 20 mA | Yes | |
— Input resistance (4 mA to 20 mA) | 50 Ω | |
Input ranges (rated values), thermocouples | ||
● Type B | Yes | |
— Input resistance (Type B) | 10 MΩ | |
● Type E | Yes | |
— Input resistance (Type E) | 10 MΩ | |
● Type J | Yes | |
— Input resistance (type J) | 10 MΩ | |
● Type K | Yes | |
— Input resistance (Type K) | 10 MΩ | |
● Type L | Yes | |
— Input resistance (Type L) | 10 MΩ | |
● Type N | Yes | |
— Input resistance (Type N) | 10 MΩ | |
● Type R | Yes | |
— Input resistance (Type R) | 10 MΩ | |
● Type S | Yes | |
— Input resistance (Type S) | 10 MΩ | |
● Type T | Yes | |
— Input resistance (Type T) | 10 MΩ | |
● Type U | Yes | |
— Input resistance (Type U) | 10 MΩ | |
Input ranges (rated values), resistance thermometer | ||
● Ni 100 | Yes | |
— Input resistance (Ni 100) | 10 MΩ | |
● Pt 100 | Yes | |
— Input resistance (Pt 100) | 10 MΩ | |
● Pt 200 | Yes | |
— Input resistance (Pt 200) | 10 MΩ | |
Cable length | ||
● shielded, max. | 200 m | 200 m; TC: 50 m |
Analog value generation for the inputs | ||
Integration and conversion time/resolution per channel | ||
● Resolution with overrange (bit including sign), max. | 16 bit; 10 bit to 15 bit + sign | 16 bit; 10 bit to 15 bit + sign |
● Integration time, parameterizable | Yes; 2.5 to 100 ms | Yes; 2.5 to 100 ms |
● Interference voltage suppression for interference frequency f1 in Hz | 10 to 400 Hz | 10 to 400 Hz |
Encoder | ||
Connection of signal encoders | ||
● for current measurement as 2-wire transducer | Yes | Yes |
● for current measurement as 4-wire transducer | Yes | Yes |
Errors/accuracies | ||
Operational error limit in overall temperature range | ||
● Current, relative to input range, (+/-) | 0.45 % | |
● Resistance thermometer, relative to input range, (+/-) | 0.04 %; 0.09 to 0.04% | |
Basic error limit (operational limit at 25 °C) | ||
● Current, relative to input range, (+/-) | 0.1 % | |
● Resistance thermometer, relative to input range, (+/-) | 0.008 %; 0.018 … 0.008% | |
Interrupts/diagnostics/status information | ||
Diagnostics function | Yes | Yes |
Diagnoses | ||
● Diagnostic information readable | Yes | Yes |
● Overrange | Yes | Yes |
● Wire-break in signal transmitter cable | Yes | Yes |
● Short-circuit of the signal encoder cable | Yes | Yes |
Diagnostics indication LED | ||
● Group error SF (red) | Yes | Yes |
● Channel fault indicator F (red) | Yes | Yes |
Ex(i) characteristics | ||
Module for Ex(i) protection | Yes | Yes |
maximum values for connecting terminals for gas group IIC | ||
● Uo (no-load voltage), max. | 25.2 V | 5.9 V |
● Io (short-circuit current), max. | 68.5 mA | 28.8 mA |
● Po (power output), max. | 431 mW | 41.4 mW |
● Co (permissible external capacity), max. | 90 nF | 43 µF |
● Lo (permissible external inductivity), max. | 7.5 mH | 40 mH |
Potential separation | ||
Potential separation analog inputs | ||
● between the channels | Yes | No |
● between the channels and backplane bus | Yes | Yes |
Standards, approvals, certificates | ||
Use in hazardous areas | ||
● ATEX marking | ATEX II 3 G (2) GD Ex nA [ib Gb] [ib IIIC Db] IIC T4 Gc | ATEX II 3 G (2) GD Ex nA [ib Gb] [ib IIIC Db] IIC T4 Gc |
● FM marking | Class I, Division 2, Group A, B, C, D T4 | Class I, Division 2, Group A, B, C, D T4 |
● Test number PTB | Ex-96.D.2092X | Ex-96.D.2108X |
Ambient conditions | ||
Ambient temperature during operation | ||
● max. | 60 °C | 60 °C |
connection method / header | ||
required front connector | 20-pin | 20-pin |
Dimensions | ||
Width | 40 mm | |
Height | 125 mm | |
Depth | 120 mm | |
Weights | ||
Weight, approx. | 290 g | 210 g |
Weight | N/A |
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Dimensions | N/A |
INOSAKI Limited
RM B 5/F Gaylord Comm,
Bldg 114-118 Lockhart Rd.
Hong Kong
INOSAKI Sdn. Bhd.
2-1-9, Ground Floor, One Square, Tingkat Mahsuri 1,
11900 Bayan Lepas, Penan
INOSAKI Pte. Ltd.
101 Upper Cross Street,
No. 06-17, People’s Park Centre,
Singapore (058357)