Electrical Installation, Control Cables - Danfoss VLT 8000 AQUA series Operating Instructions Manual

Electrical installation, control cables

Torque:
Screw size:
Generally speaking, control cables must be screened/
armoured and the screen must be connected by
means of a cable clamp at both ends to the metal
cabinet of the unit (see Earthing/Grounding of
screened (armoured control cables).
Normally, the screen must also be connected to the
body of the controlling unit (follow the instructions for
installation given for the unit in question).
If very long control cables are used, 50/60 Hz
earth loops may occur that will disturb the whole
system. This problem can be solved by connecting
one end of the screen to earth via a 100nF
capacitor (keeping leads short).
Electrical installation, control cables
Torque: 0.5 Nm/5 in-lbs
Screw size: M3
See Earthing/Grounding of screened (armoured control
cables for correct termination of control cables.
No. Function
04, 05 Relay output 2 can be used for
indicating status and warnings.
12, 13 Voltage supply to digital inputs. For
the 24 V DC to be used for digital
inputs, switch 4 on the control card
must be closed, position "on".
78
0.5 Nm (5 in-lbs)
M3.
®
VLT 8000 AQUA
16-33 Digital inputs. See parameters
300-307 Digital inputs.
20 Common for digital inputs.
39 Common for analog/digital outputs.
See Examples of connection.
42, 45 Analog/digital outputs for indicating
frequency, reference, current and
torque. See parameters 319-322
Analoge/digital outputs.
50 Supply voltage to potentiometer and
thermistor 10 V DC.
53, 54 Analog voltage input, 0 - 10 V DC.
55 Common for analog inputs.
60 Analog current input 0/4-20 mA. See
parameters 314-316 Terminal 60.
61 Termination of serial communication.
See Earthing/Grounding of screened
(armoured control cables.
This terminal is not normally to be
used.
68, 69 RS 485 interface, serial
communication. When multiple
frequency converters are connected
to a communication bus, switches 2
and 3 on control card in the first and
last units must be closed (position
ON). For the remaining frequency
converters, switches 2 and 3 must
be open (OFF). The factory setting is
closed (position ON).
MG.83.A2.02 - VLT is a registered Danfoss trademark