Danfoss FC 300, Руководство по эксплуатации

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Terminal description
Terminal Parameter
Default
setting Description
55 - Common for analog
input
Table 2.4 Terminal Description Digital Inputs/Outputs, Analog Inputs/Outputs
Terminal description
Terminal Parameter
Default
setting Description
Serial communication
61 - Integrated RC-Filter
for cable screen. ONLY
for connecting the
screen when experi-
encing EMC problems.
68 (+) 8-3* RS-485 Interface. A
control card switch is
provided for
termination resistance.
69 (-) 8-3*
Relays
01, 02, 03 5-40 [0]
[0] No
operation
Form C relay output.
Usable for AC or DC
voltage and resistive
or inductive loads.
04, 05, 06 5-40 [1] [0] No
operation
Table 2.5 Terminal Description Serial Communication
2.4.5.3 Wiring to Control Terminals
Control terminal connectors can be unplugged from the
frequency converter for ease of installation, as shown in
Illustration 2.11 .
1. Open the contact by inserting a small screwdriver
into the slot above or below the contact, as
shown in
Illustration 2.13 .
2. Insert the bared control wire into the contact.
3. Remove the screwdriver to fasten the control wire
into the contact.
4. Ensure the contact is firmly established and not
loose. Loose control wiring can be the source of
equipment faults or less than optimal operation.
See 10.1 Power-dependent Specifications for control terminal
wiring sizes.
See 6 Application Examples for typical control wiring
connections.
2
1
10 mm
130BA310.10
12 13
18
19
27
29
32
33
Illustration 2.13 Connecting Control Wiring
2.4.5.4 Using Screened Control Cables
Correct screening
The preferred method in most cases is to secure control
and serial communication cables with screening clamps
provided at both ends to ensure best possible high
frequency cable contact.
If the earth potential between the frequency converter and
the PLC is different, electric noise may occur that will
disturb the entire system. Solve this problem by fitting an
equalizing cable next to the control cable. Minimum cable
cross section: 16 mm
2 .
1
2
PE
FC
PE
PLC
130BB922.11
PE PE
Illustration 2.14 Correct Screening
1
Min. 16 mm
2
2 Equalizing cable
Table 2.6 Legend to Illustration 2.14
50/60 Hz ground loops
With very long control cables, ground loops may occur. To
eliminate ground loops, connect one end of the screen-to-
ground with a 100 nF capacitor (keeping leads short).
100nF
FC
PE
PE
PLC
130BB609.11
Illustration 2.15 50/60 Hz Ground Loops
Installation
VLT
®
AutomationDrive Operating
Instructions
MG33AM02 - VLT
®
is a registered Danfoss trademark 17
2 2