Danfoss VLT AQUA Operating Instructions Manual page 35

VLT AQUA Low Harmonic Drive Operating In-
structions
Enclosure protection
IP21 / NEMA 1
IP54 / NEMA 12
IP21 / NEMA 1
Table 4.1: Heatsink Air Flow
NB!
For the drive section, the fan runs for the following reasons:
1. AMA
2. DC Hold
3. Pre-Mag
4. DC Brake
5. 60% of nominal current is exceeded
6. Specific heatsink temperature exceeded (power size dependent)
7. Specific Power Card ambient temperature exceeded (power size dependent)
8. Specific Control Card ambient temperature exceeded
Once the fan is started it will run for minimum 10 minutes.
NB!
For the active filter, the fan runs for the following reasons:
1. Active filter running
2. Active filter not running, but mains current exceeding limit (power size dependent)
3. Specific heatsink temperature exceeded (power size dependent)
4. Specific Power Card ambient temperature exceeded (power size dependent)
5. Specific Control Card ambient temperature exceeded
Once the fan is started it will run for minimum 10 minutes.
Frame size
D11
E7 P315
E7 P355-P450
F17
®
MG.20.T1.02 - VLT is a registered Danfoss trademark
Door fan(s) / Top fan airflow
Total airflow of multiple fans
510 m 3 /h (300 cfm)
680 m 3 /h (400 cfm)
680 m 3 /h (400 cfm)
3
4900 m /h (2884 cfm)
4 How to Install
Heatsink fan(s)
Total airflow of multiple fans
2295 m 3 /h (1350 cfm)
2635 m 3 /h (1550 cfm)
2975 m 3 /h (1750 cfm)
3
6895 m /h (4060 cfm)
4
35