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Match the complete marking
Include 6ES7331-7KF02-0AB0 and the visible revision or assembly identity in your enquiry. Keep the complete reference on the quotation.
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Request available label and connector photos. Have your maintenance team compare the offered 6ES7331-7KF02-0AB0 with the installed equipment and applicable Siemens documentation.
Technical specifications for 6ES7331-7KF02-0AB0
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Manufacturer:Siemens
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Product Category:PLC Systems
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Spare Part Number:6ES7331-7KF02-0AB0
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Weight:0.5512 lbs (0.25 kg)
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Tariff Code:8537101190
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Product type:SM 331 analog input
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System:SIMATIC S7-300
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Analog inputs:8; 4 for resistance measurement
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Input types:Voltage, current, thermocouple, RTD and resistance
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Resolution:9/12/14 bits; range and integration dependent
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Rated load voltage:24 V DC
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Load current:30 mA maximum without load
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Backplane current:50 mA maximum at 5 V DC
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Current ranges:0-20 mA, 4-20 mA, ±10 mA, ±20 mA, ±3.2 mA
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Thermocouples:Types E, J, K, L and N
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RTD types:Pt100 and Ni100
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Integration time:2.5 / 16.67 / 20 / 100 ms
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Front connector:20-pin
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Channel isolation:Channels not isolated from each other
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Diagnostics:Parameterizable; red SF group-error LED
Information
- Siemens 6ES7331-7KF02-0AB0. A mixed-signal S7-300 station can use one SM 331 for several sensor technologies, provided the channel-group settings match the wiring.
System: SIMATIC S7-300
Analog inputs: 8; 4 for resistance measurement
Input types: Voltage, current, thermocouple, RTD and resistance
Integration times of 2.5, 16.67, 20 and 100 ms correspond to basic conversion times of 3, 17, 22 and 102 ms. Resolution and interference suppression depend on the selected integration and measurement mode. Preserve the configured range and engineering scaling when replacing the module.
The 20-pin front connector carries the field connections. Inputs are isolated from the backplane and electronics supply, but are not isolated from each other. Diagnostics and limit alarms are parameterizable, and the red SF LED gives a group-error indication. Use the diagnostic record to identify the affected circuit.
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Siemens 6ES7331-7KF02-0AB0 technical reference
Original manufacturer data sheet - PDF, 5 pages. Exact-model technical characteristics and manufacturer product identification. -
Siemens 6ES7331-7KF02-0AB0 installation guide
Prepared by Apter Power - PDF, 5 pages. Installed-system review, configuration checks, commissioning and handover.
Configuration scope: Technical values apply to the complete 6ES7331-7KF02-0AB0 execution. Retain the actual installed configuration and applicable Siemens instructions.
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Process analog acquisition
Use the SM 331 for supported voltage, current and resistance signals in an S7-300 station. Preserve the engineering range assigned to each channel group. -
Temperature acquisition
Configure supported thermocouple or RTD inputs for the connected sensor. Coordinate sensor selection, wiring and compensation with the installed measurement arrangement. -
Current-loop integration
Integrate supported 0-20 mA or 4-20 mA signals into the station. Preserve loop wiring, input configuration and engineering scaling during a module change. -
Analog module service
Use the configured channel and diagnostic records to check a replacement. Compare integration settings and connector wiring before accepting the returned measurements.
It provides eight analog inputs; four are available for resistance measurement.
Types E, J, K, L and N are supported. Match the configured sensor and compensation method to the wiring.
Supported current ranges include 4-20 mA and 0-20 mA, with 25 ohm input resistance for these ranges.
The channels are isolated from the backplane and electronics supply, but not from each other.
Selectable integration times are 2.5, 16.67, 20 and 100 ms; basic conversion times are 3, 17, 22 and 102 ms. Resolution and interference suppression depend on the selected mode.
A 20-pin front connector is required. Preserve the channel wiring and verify the measurement settings before reconnecting the sensor circuits.
Alternative Names
Technical notes
System relationship: A mixed-signal S7-300 station can use one SM 331 for several sensor technologies, provided the channel-group settings match the wiring.
Configuration boundary: SF is a group-error indication. Read the parameterizable diagnostic information to identify the affected channel or condition before release.
Technical reference: Siemens 6ES7331-7KF02-0AB0 Data Sheet. Technical values apply to the complete 6ES7331-7KF02-0AB0 execution. Retain the actual installed configuration and applicable Siemens instructions.
FAQ View All FAQ
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How many input channels does 6ES7331-7KF02-0AB0 provide?It provides eight analog inputs; four are available for resistance measurement.
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Which thermocouple types are supported by 6ES7331-7KF02-0AB0?Types E, J, K, L and N are supported. Match the configured sensor and compensation method to the wiring.
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Can 6ES7331-7KF02-0AB0 measure 4-20 mA signals?Yes. Supported current ranges include 4-20 mA and 0-20 mA, with 25 ohm input resistance for these ranges.
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Are the input channels of 6ES7331-7KF02-0AB0 isolated from one another?No. The channels are isolated from the backplane and electronics supply, but not from each other.
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How does integration time affect 6ES7331-7KF02-0AB0?Selectable integration times are 2.5, 16.67, 20 and 100 ms; basic conversion times are 3, 17, 22 and 102 ms. Resolution and interference suppression depend on the selected mode.
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What front connector is required for 6ES7331-7KF02-0AB0?A 20-pin front connector is required. Preserve the channel wiring and verify the measurement settings before reconnecting the sensor circuits.
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Which RTD inputs can be configured on 6ES7331-7KF02-0AB0?Standard Pt100 and Ni100 inputs are supported. The module also supports two-, three- and four-wire resistance connections.
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What does the red SF indication on 6ES7331-7KF02-0AB0 mean?SF is a group-error indication. Read the parameterizable diagnostic information to identify the affected channel or condition before release.
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