
For the units mentioned below, the limits are as follows:
- VLT 5122, 380-500 V, cuts out at 75°C and can be reset if the temperature has fallen below 60°C.
- VLT 5152, 380-500 V, cuts out at 80°C and can be reset if the temperature has fallen below 60°C.
- VLT 5202, 380-500 V, cuts out at 95°C and can be reset if the temperature has fallen below 65°C.
- VLT 5252, 380-500 V, cuts out at 95°C and can be reset if the temperature has fallen below 65°C.
- VLT 5302, 380-500 V, cuts out at 105°C and can be reset if the temperature has fallen below 75°C.
- VLT 5352-5552, 380-500 V, cut out at 85°C and can be reset if the temperature has fallen below 60°C.
- VLT 5042-5122, 525-690 V, cut out at 75°C and can be reset if the temperature has fallen below 60°C.
- VLT 5152, 525-690 V, cuts out at 80°C and can be reset if the temperature has fallen below 60°C.
- VLT 5202-5352, 525-690 V, cut out at 100°C and can be reset if the temperature has fallen below 70°C.
- VLT 5402-5602, 525-690 V, cut out at 75°C and can be reset if the temperature has fallen below 60°C.
The frequency converter is protected against short-circuiting on motor terminals U, V, W.
The frequency converter is protected against earth fault on motor terminals U, V, W.
Monitoring of the intermediate circuit voltage ensures that the frequency converter cuts out if the intermediate circuit voltage becomes
too high or too low.
If a motor phase is missing, the frequency converter cuts out, see parameter 234
Motor phase monitor.
If there is a mains fault, the frequency converter is able to carry out a controlled decelleration.
If a mains phase is missing, the frequency converter will cut out when a load is placed on the motor.
VLT
®
5000 Design Guide
36
MG.52.B2.02 - VLT
®
is a registered Danfoss trademark