Electrical Installation, Control Terminals; Pc Communication; Relay Connection - Danfoss VLT DMS 300 Manual

Electrical installation, control terminals

See section entitled Grounding of shielded/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 Analog voltage input 0 - +/- 10 V DC.
60 Analog current input 0/4 - 20 mA.
67 + 5 V DC supply voltage
to Profibus.
68, 69 Fieldbus 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(+), LCP2/PC, yellow
N RS485(-), LCP2/PC, green
G OV, blue
* See VLT 2800/FCM 300/FCD 300 Profibus DP
V1 Operating Instructions (MG.90.AX.YY), VLT
2800/FCD 300 DeviceNet Operating Instructions
(MG.90.BX.YY) or FCD 300 AS-interface Operating
Instructions (MG.04.EX.YY).

PC communication

Connection to terminals P and N.
MG.90.F2.22 - VLT is a registered Danfoss trademark
Decentral Solutions
On non-fieldbus and Profibus variants, terminals
68 and 69 can be used as well.

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 optionally 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 operation
of the LCP2 and serial bus (incl. parameter setting)
without connection to AC input.
Please note that a warning of low voltage will
be given when 24 V DC has been connected;
however there will be no tripping.
NOTE
Use 24 V DC supply of type PELV to
ensure correct galvonic isolation (type
PELV) on the control terminals of the
VLT variable frequency drive.
Beware of unintended start of the
motor, if the electrical power is
applied during operation on the
external 24 V back up supply.
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