Temperature range and thermal management
With forced convection at a minimum air velocity of 0.7 m/s across the modules and a rated voltage of 24 V ±5 %, the upper limit extends to 70 °C. If an automatic diagnosis or maintenance check reveals that admissible parameters have been exceeded, Siemens requires a proof test (function check) by the manufacturer before returning the module to service. Typical power loss is 10 W, so panel airflow planning should account for heat dissipation, especially in enclosures with limited convection. The compact footprint (125 x 80 x 120 mm) fits standard S7-300 mounting rails.
Safety documentation includes SIL 3, Cat.4, and AK 6. Diagnostic alarm, group error (SF red LED), and readable diagnostics are standard. A 40-pin front connector is required.
Sourcing note
This is a current-production part. We source it on a quoted-to-order basis against an RFQ. Lead time and pricing confirmed per request. Specify the MPN as listed; no direct functional replacement exists for this exact safety I/O configuration.