Elektrical Installation, Control Terminals; Vlt Software Dialog; Relay Connection - Danfoss VLT FCD 311 Design Manual

Elektrical installation, control terminals

See section entitled Earthing of screened/armoured
control cables in the Design Guide for the correct
termination of control cables.
No. Function
01-03 Relay outputs 01-03 can be used for
indicating status and alarms/warnings.
12 24 V DC voltage supply.
18-33 Digital inputs.
20, 55 Common frame for input
and output terminals. Can be separated
with switch S100
31a, Motor thermistor
31b
35 Common (-) for external 24 V control
back up supply. Optional.
36 External + 24 V control back up supply.
Optional.
42 Analog output for displaying frequency,
reference, current or torque.
46 Digital output for displaying status,
warnings or alarms, as well as
frequency output.
50 +10 V DC supply
voltage for potentiometer
53 Analogue voltage input 0 - +/- 10 V DC.
60 Analogue current input 0/4 - 20 mA.
67 + 5 V DC supply voltage
to Profibus.
68, 69 RS 485, Serial communication.
70 Ground for terminals 67, 68 and 69.
Normally this terminal is not to be used.
D For future use
V +5V , red
P RS485(+), yellow
N RS485(-), green
G OV, blue
MG.04.A1.02 - VLT is a registered Danfoss trade mark
®
VLT FCD Series

VLT Software Dialog

Connection to terminals 68–70.

Relay connection

See parameter 323 Relay output for programming of
relay output.
No. 01 - 02 1 - 2 make (normally open)
01 - 03 1 - 3 break (normally closed)
LCP 2 plug, optional
An LCP 2 control unit can be connected to a plug
which is mounted in the housing. Ordering number:
175N0131.
LCP control units with ordering number 175Z0401
are not to be connected.
Installation of 24 Volt external supply (optional)
24 V external DC supply can be used as low-voltage
supply to the control card. This enables full opera-
tion of the LCP2 and serial bus (incl. parameter
setting) without connection to mains.
Please note that a warning of low voltage will be
given when 24 V DC has been connected; however
there will be no tripping.
NB!:
Use 24 V DC supply of type PELV to ensure
correct galvanic isolation (type PELV) on the
control terminals of the VLT frequency converter.
Beware of unintended start of the motor,
if the mains power is applied during oper-
ation on the external 24 V back up supply.
43