Enclosure protection
Frame size
Door fan(s) / Top fan airflow
Total airflow of multiple fans
Heatsink fan(s)
Total airflow of multiple fans
IP21 / NEMA 1
IP54 / NEMA 12
D11
510 m
3
/h (300 cfm) 2295 m
3
/h (1350 cfm)
E7 P315
680 m
3
/h (400 cfm) 2635 m
3
/h (1550 cfm)
E7 P355-P450
680 m
3
/h (400 cfm) 2975 m
3
/h (1750 cfm)
IP21 / NEMA 1 F17
4900 m
3
/h (2884 cfm) 6895 m
3
/h (4060 cfm)
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.
VLT AQUA Low Harmonic Drive Operating In-
structions
4 How to Install
MG.20.T1.02 - VLT
®
is a registered Danfoss trademark 35
4
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