7
vacon • 57
Technical data
Table 23. Vacon 20 X technical data.
Protections
Undervoltage trip limit
Depends on supply voltage (0,8775*supply
voltage):
Supply voltage 400 V: Trip limit
351 V
Supply voltage 480 V: Trip limit
421 V
Supply voltage 240 V: Trip limit
211 V
Earth fault protection
Yes
Mains supervision
Yes
Motor phase supervision
Yes
Overcurrent protection
Yes
Unit overtemperature pro-
tection
Yes
Motor overload protection Yes
Motor stall protection
Yes
Motor underload protec-
tion
Yes
Short-circuit protection of
+24V and +10V reference
voltages
Yes
Thermal motor protection Yes (by PTC with option card)
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