22 Option description and instructionsCompetenceThe acceptance test of the safety function must be carried out by a competent person withadequate expertise and knowledge of the safety function as well as functional safety, asrequired by IEC 61508-1 clause 6. The test procedures and report must be documentedand signed by this person. Ambient conditionsFor the environmental limits for the safety functions and the drive, refer to the hardwaremanual.ACS880-07 drives, frames R6 to R11The maximum ambient temperature for the drive with safety relays is 45 °C (113 °F). In thetemperature range +40…45 °C (+104…113 °F), the rated output current must be deratedby 2% for every added 1 °C (1.8 °F). The output current can be calculated by multiplyingthe current given in the rating table by the derating factor (k): Reporting problems and failures related to safety functionsContact your local ABB representative.T1.000.90+40 °C+104 °F+45 °C+113 °Fk0.80