Danfoss vlt aqua Instruction

4.8 Electrical Installation - additional
4.8.1 Electrical Installation, Control Cables
Figure 4.34: Diagram showing all electrical terminals without options.
1:Connection to filter
Terminal 37 is the input to be used for Safe Stop. For instructions on safe stop installation, refer to the section
Safe Stop Installation in the
adjustable frequency drive Design Guide. See also sections Safe Stop and Safe Stop Installation.
In rare cases, very long control cables and analog signals may, depending on installation, result in 50/60 Hz ground loops due to noise from line power
supply cables.
If this occurs, it may be necessary to break the shield or insert a 100 nF capacitor between shield and chassis.
The digital and analog inputs and outputs must be connected separately to the control cards of the unit (both filter and drive, terminal 20, 55, 39) to
avoid ground currents from both groups to affect other groups. For example, switching on the digital input may disturb the analog input signal.
4 How to Install
VLT AQUA Low Harmonic Drive Instruction
Manual
4-58 MG.20.T1.22 - VLT
®
is a registered Danfoss trademark
4

Danfoss vlt aqua Specifications

General

Supply Voltage	200-240V, 380-500V, 525-600V
Enclosure	IP20
Features	Energy optimization
Approvals	CE, UL, cUL
Input Voltage Range	200-240V, 380-500V, 525-600V
Output Voltage Range	0 to supply voltage
Protection Features	Overvoltage, Undervoltage, Overcurrent, Short circuit, Ground fault
Communication Interfaces	PROFIBUS
Cooling Method	Air-cooled