Drive Replacement - Danfoss iC7 Series Operating Manual

Operating Guide | iC7 Series Functional Safety
Table 12: PFD and PFH Values, Altitude, and Safety Software Update Interval
Altitude
3000 m (9800 ft)
4000 m (13100 ft)
The values given in Table 12 assume that all maintenance procedures are followed accordingly.
8.4

Drive Replacement

If an internal fault leads to a permanent defect, the drive must be replaced. The safety system modules are not repairable.
After the faulty drive has been replaced, it must be commissioned. Refer to the product-specific guides for details and instructions for
commissioning the drive, and also follow the procedures described in chapter Commissioning.
34 | Danfoss Drives Oy © 2024.09
Safety software update
interval
3 years
2 years
(continued)
Average probability of
dangerous failures on
demand (PFDavg)
-4
1.9*10
-4
2.1*10
Operation and Maintenance
Average frequency of
dangerous failures per hour
(1/h) (PFH)
-9
5.5*10
-9
8.5*10
AQ477043679710en-000102 / 172K2965A