Technical data 167The altitude derating can be reduced if the temperature is below +40 °C, for example,if the temperature is 30 °C, the derating factor is 1 - 1.5% · 10 = 0.85. You can reducethe output current by 35% instead of 40% at 4000 meter above the see level.Note: Check the supply network compatibility restrictions above 2000 m (6562 ft),see Installation site altitude on page 192. Check also PELV limitation on relay outputterminals above 2000 m (6562 ft), see sections Isolation areas, R1…R5 on page 188and Isolation areas, R6…R9 on page 189. Switching frequency deratingThe output current is calculated by multiplying the current given in the rating table bythe derating factor given in the table below.Note: If you change the minimum switching frequency with parameter 97.02Minimum switching frequency, derate according to the table below. Changingparameter 97.01 Switching frequency reference does not require derating.FramesizeTypeACS580-01-Derating factor (k) for the minimum switching frequencies1 kHz 2 kHz 4kHz 8 kHz 12 kHzR1 02A1-4…12A7-4 1 1 1 0.67 0.5R2 014A-4…026A-4 1 1 1 0.65 0.48R3 027A-4…046A-4 1 1 1 0.65 0.48R4 052A-4…062A-4 1 1 1 0.82 0.64R4 065A-4…073A-4 1 1 1 0.73 0.55R5 078A-4…106A-4 1 1 1 0.71 0.57R6 124A-4…145A-4 1 0.97 0.84 0.66 0.52R7 156A-4…206A-4 1 0.98 0.89 0.71 0.53R8 240A-4…293A-4 1 0.96 0.82 0.61 0.45R9 361A-4…430A-4 1 0.95 0.79 0.58 0.433AXD00000586715.xls J
