Danfoss VLT AutomationDrive FC 302 Installation Manual page 25

Installation
NOTICE!
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 runs for minimum 10 minutes.
NOTICE!
For the active filter, the fan runs for the following
reasons:
1. Active filter running
2. Active filter not running, but line power 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 runs for minimum 10 minutes.
External ducts
If additional duct work is added externally to the Rittal
cabinet, the pressure drop in the ducting must be
calculated. Use the charts below to derate the adjustable
frequency drive according to the pressure drop.
MG37A322
Installation Manual
(%)
90
80
70
60
50
40
30
20
10
0
0
Figure 3.2 D-Frame Derating vs. Pressure Change Drive Air
Flow: 450 cfm (765 m
(%)
90
80
70
60
50
40
30
20
10
0
0
Figure 3.3 E-Frame Derating vs. Pressure Change (Small Fan),
P315 Drive Air Flow: 650 cfm (1105 m
(%)
90
80
70
60
50
40
30
20
10
0
0
Figure 3.4 E-Frame Derating vs. Pressure Change (Large Fan)
P355-P450 Drive Air Flow: 850 cfm (1445 m
Danfoss A/S © Rev. 04/2015 All rights reserved.
0.5 4.9 13 27.3 45.9
Pressure Increase
3
/h)
0 0.1 3.6 9.8 21.5 43.4
Pressure Change
3
/h)
0.2 0.6 2.2 5.8 11.4 18.1 30.8
Pressure Change
3
66 89.3 115.7 147
(Pa)
76 147.1 237.5 278.9
(Pa)
69.5 152.8 210.8
(Pa)
3
/h)
23
3