4.6.11 AC line input connections
Line power must be connected to terminals 91, 92 and 93 located on the far left of the unit. Ground is connected to the terminal to the right of terminal
93.
Terminal No.
Function
91, 92, 93
94
Line power R/L1, S/L2, T/L3
Ground
NOTE!
Check the nameplate to ensure that the AC line voltage of the adjustable frequency drive matches the power supply of your plant.
Ensure that the power supply can supply the necessary current to the adjustable frequency drive.
If the unit is without built-in fuses, ensure that the appropriate fuses have the correct current rating.
4.6.12 External Fan Supply
Frame size D-E-F
If the adjustable frequency drive is supplied by DC or if the fan must run independently of the power supply, an external power supply can be applied.
The connection is made on the power card.
Terminal No.
Function
100, 101
102, 103
Auxiliary supply S, T
Internal supply S, T
The connector located on the power card provides the AC line voltage connection for the cooling fans. The fans are factory-equipped to be supplied from
a common AC line (jumpers between 100-102 and 101-103). If an external supply is needed, the jumpers are removed and the supply is connected to
terminals 100 and 101. A 5 Amp fuse should be used for protection. In UL applications, this should be a LittleFuse KLK-5 or equivalent.
VLT AQUA Low Harmonic Drive Instruction
Manual
4 How to Install
MG.20.T1.22 - VLT
®
is a registered Danfoss trademark
4-47
4
