Danfoss vlt FC 102 User Manual

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
frequency converter according to the pressure drop.
Illustration 4.20: D frame Derating vs. Pressure Change
Drive air flow: 450 cfm (765 m
3
/h)
Illustration 4.21: E frame Derating vs. Pressure Change (Small Fan), P315
Drive air flow: 650 cfm (1105 m
3
/h)
Illustration 4.22: E frame Derating vs. Pressure Change (Large Fan) P355-P450
Drive air flow: 850 cfm (1445 m
3
/h)
Illustration 4.23: F frame Derating vs. Pressure Change
Drive air flow: 580 cfm (985 m
3
/h)
4 How to Install
VLT HVAC Low Harmonic Drive Operating In-
structions
36 MG.16.A1.02 - VLT
®
is a registered Danfoss trademark
4

Danfoss vlt FC 102 Specifications

General

Category	DC Drives
Model	Danfoss VLT FC 102
Output voltage range	0 to rated motor voltage
Power range	0.37 kW to 200 kW
Communication interfaces	RS-485
Protection features	Overvoltage, undervoltage, overcurrent, short circuit, earth fault, overtemperature, motor thermal protection
Cooling method	Air-cooled
Enclosure rating	IP20, IP21, IP55 (depending on model)
Approvals	CE, UL, cUL