3.5.16 PC Communication
Connect to terminals P and N for PC-access to single parameters. Motor and field bus communication should be stopped before performing automatic
transfer of multiple parameters.
On non-fieldbus and Profibus variants, terminals 68 and 69 can be used provided Profibus communication is stopped.
3.5.17 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)
3.5.18 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.
3.5.19 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 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 operation on the external 24 V back up supply.
3.5.20 Software Version 1.5x
A Field bus equipped FCD shows the status
Unit ready
even with bridged terminals 12-27 and cannot be set into RUNNING mode by digital inputs alone
until one of the following parameters is set:
-
Par. 502 is set to
Digital input
or
Logic and
or
-
Par. 833 or 928 is set to
Disable
or
-
Par. 678 is set to
Standard version
The field bus status word at power up might be different (typically 0603h instead of 0607h) until the first valid control word is sent. After sending the
first valid control word (bit 10 = Data valid) the status is exactly as in earlier software versions.
VLT
®
Decentral FCD 300 Design Guide
3 Installation
MG.90.S1.02 - VLT
®
is a registered Danfoss trademark
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