Danfoss VLT FC 322 Instruction Manual page 75

Specifications VLT® Automation VT Drive FC 322 D-Frame Instruction Manual
Control card performance
Scan interval
Control card, USB Serial Communication
USB standard
USB plug
CAUTION
Connection to PC is carried out via a standard host/device USB cable.
The USB connection is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
The USB connection is not galvanically isolated from protection earth (ground). Use only isolated laptop/PC as connection to
the USB connector on or an isolated USB cable/converter.
Protection and Features
•
Electronic thermal motor protection against overload.
•
Temperature monitoring of the heatsink ensures that the trips if the temperature reaches 95°C ± 5°C. An overload
temperature cannot be reset until the temperature of the heatsink is below 70°C ± 5°C (Guideline - these temper-
atures may vary for different power sizes, enclosures etc.). The has an auto derating function to avoid its heatsink
reaching 95°C.
•
The is protected against short-circuits on motor terminals U, V, W.
•
If a mains phase is missing, the trips or issues a warning (depending on the load).
•
Monitoring of the intermediate circuit voltage ensures that the trips if the intermediate circuit voltage is too low or
too high.
•
The is protected against earth (ground) faults on motor terminals U, V, W.
0 10
10-6 MG21E122 - VLT® is a registered Danfoss trademark
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5 ms
1.1 (Full speed)
USB type B "device" plug