Danfoss VLT AutomationDrive FC 300 Design Manual page 116

FC 300 Design Guide
Galvanic Isolation In The MCB 101
Digital/analog inputs are galvanically isolated from other inputs/outputs on the MCB 101 and in the con-
trol card of the drive. Digital/analogue outputs in the MCB 101 are galvanically isolated from other inputs/
outputs on the MCB 101, but not from these on the control card of the drive.
If the digital inputs 7, 8 or 9 are to be switched by use of the internal 24 V power supply (terminal 9) the
connection between terminal 1 and 5 which is illustrated in the drawing has to be established.
Principle Diagram
Digital inputs - Terminal X30/1-4
Digital input:
Number of digital inputs
Terminal number
Logic
Voltage level
Voltage level, logic'0' PNP (GND = 0 V)
Voltage level, logic'1' PNP (GND = 0 V)
Voltage level, logic '0' NPN (GND = 24V)
116
Options and Accessories
MG.33.B8.02 - VLT ® is a registered Danfoss trademark
3
X30.2, X30.3, X30.4
PNP or NPN
0 - 24 V DC
< 5 V DC
> 10 V DC
< 14 V DC