Siemens 6ES7288-3AT04-0AA0 EM AT04 Thermocouple Input Module
A four-channel S7-200 SMART thermocouple input module for documented temperature measurement points.
Product Identification
Siemens 6ES7288-3AT04-0AA0 is the SIMATIC S7-200 SMART EM AT04 module with four 16-bit thermocouple inputs. Temperature values are represented with 0.1 °C or 0.1 °F resolution.
Published module data includes at least 10 MΩ input impedance, 500 V AC field-to-logic isolation for one minute, ±0.05% full-scale repeatability and cold-junction error within ±1.5 °C.
Thermocouple type, units, open-wire response, filter choice, polarity and compensation arrangement must be retained per channel. Unused channels should be deactivated or treated exactly as the Siemens manual specifies.
Engineering Data
Functions
Temperature acquisition
Converts four thermocouple millivolt signals into configured temperature values.
Junction compensation
Uses the module terminal condition to compensate the thermocouple reference junction.
Diagnostic handling
Reports configured range and wire-break conditions to the S7-200 SMART project.
About IndustryParts
https://www.industryparts.com/Exact-model handling for 6ES7288-3AT04-0AA0
IndustryParts keeps the complete 6ES7288-3AT04-0AA0 identity, requested quantity and installed-system evidence together so the proposed supply can be checked against the actual application before dispatch.
Applications
Machine temperature
Monitors heaters, tooling or bearings through documented thermocouple types.
Process skid
Collects four temperature points in a compact S7-200 SMART control station.
Service replacement
Restores an EM AT04 position while retaining sensor, units and compensation records.
Lifecycle
Document
Keep sensor type, units, limits, cable material and compensation settings per channel.
Inspect
Check polarity, terminal condition, shielding and extension-wire continuity.
Verify
Run traceable multi-point tests and confirm wire-break and alarm behavior.
FAQ
Q01How many thermocouples can 6ES7288-3AT04-0AA0 accept?
6ES7288-3AT04-0AA0 provides four thermocouple input channels.
Q02What sensor information should accompany 6ES7288-3AT04-0AA0?
Provide thermocouple type, polarity, channel number, extension-wire material, units, filter and alarm limits for every point.
Q03How should unused 6ES7288-3AT04-0AA0 channels be handled?
Deactivate them in the approved configuration or follow the Siemens shorting practice; do not leave their diagnostic behavior undefined.
Q04Why does terminal condition matter for 6ES7288-3AT04-0AA0?
Cold-junction compensation depends on the module terminal environment, so terminal integrity and temperature gradients can affect the reading.
Q05What acceptance test is appropriate for 6ES7288-3AT04-0AA0?
Apply traceable references to all four channels and record temperature accuracy, polarity, stability, open-wire response and alarm operation.
