Control Applications Elnet PFC Manuale utente
PFCElnet
Power Factor Controller
Rev. 1.4
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Table of Contents
CHAPTER 1 – Electrical Wiring
.........................................3
1.1 Electrical Connections................................................3
1.2 Electrical Wiring Diagrams........................................5
1.3 Test Relays Screen.......................................................8
CHAPTER 2 – Power Factor Controller......................................10
2.1 General Information....................................................10
2.2 Controller's Data Screen.............................................11
2.3 Voltage, Current, Hz....................................................12
2.4 Power Factor, THD......................................................12
CHAPTER 3 – Power Factor Controller Settings..........................14
3.1 Single \ Three Phase modes..........................................14
3.2 Transformers Ratio.......................................................15
3.3 Vital Settings..................................................................17
3.4 Non Vital Settings..........................................................21
3.5 Working Range..............................................................23
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CHAPTER 1 – Electrical Wiring
1.1. Electrical connections
All Connections, except those to the CT core of the ElNet PFC
Power Factor Controller are made via terminal connector plugs.
Recommended max tightening torque for the connector screws is
0.5 Nm.
The CT cores of the ElNet PFC Power Factor Controller are
located externally on the rear of the instrument and the lead from
the leg of the external Current Transformer must pass through in
the correct direction.
NOTE!
!
Ensure all the connections to the leads of the current
transformer wiring are secure and there is no mechanical
strain on the wire. The cross section of the leads to the
Current transformer must be compatible with the power of
the current transformer. We recommend a power transformer
with at least 3VA and the length of the wiring of the
transformer should not exceed 5m.
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1. Insert the lead from side “K” of the Current Transformers of
Line 1 through the hole marked "I1" – "K" of the ElNet PFC
Power Factor Controller.
NG
2. Repeat the procedure for Line 2 and Line 3 ("I2""I3"/"K").
3. Connect the rest of the connections to the ElNet PFC Power
Factor Controller by means of terminal connector plugs.
All Rear Panel connections are according to the
wiring diagram (See Figures 1.1, 1.2) and are easy to
follow.
WARNING!
Never allow an open circuit between "K" & "L" of the
Current Transformers.
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1.2. Electrical Wiring Diagrams
Figure 1.1 – Three Phase Electrical wiring diagram
Notice!
The distance between the external current
transformer and the Elnet will not exceed 5m
Attention! Maximum current for contactors R1 up to R6 is up to 3A
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Notice!
The distance between the external current
transformer and the Elnet will not exceed 5m
Figure 1.2 – Single Phase Electrical wiring diagram
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Figure 1.3 – Connections on the back of the device
Pin Designation
Description Remarks
V1 Line 1 - Voltage Supply Use 6Amp fuse to
protect the line
V2 Line 2 - Voltage Supply Use 6Amp fuse to
protect the line
V3 Line 3 - Voltage Supply Use 6Amp fuse to
protect the line
I1 From external Current
Transformer on Line1 Note the correct
direction to insert
the lead
I2 From external Current
Transformer on Line2 Note the correct
direction to insert
the lead
I3 From external Current
Transformer on Line3 Note the correct
direction to insert
the lead
~
~~
~
Power 110 - 280 VAC OR 90-250 VDC
N Neutral Neutral Line
Digital Out
1 2 3 4 5 6 Relay outputs for switching
the capacitor's contactors. Recommended
operational load up
to 5 Amp
C Common connector for
feeding voltage\neutral to
all the contact relay
outputs.
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1.3. Test Relays Screen
1. From the Main Menu scroll to Settings and press "Enter".
Figure 1.4 – Access the Settings screen
2. The ENTER CODE screen appears.
Figure 1.5 – Enter Code screen
3. The password to activate the Test Relay screen is 789.
4. Use the buttons F3 & F4 to move the cursor, to set the value
use buttons F1 & F2, when finished click “ENTER”.
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5. The TEST RELAY screen will appear.
Figure 1.6 – Test Relay screen
6. Use the navigation buttons to force and release the relevant
output.
7. When finished hold the "Back" pushbutton until the main
menu appears.
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CHAPTER 2 – Power Factor Controller
2.1 General Information.
ElNet PFC Power Factor Controller enables measurement and
display of voltage, current, frequency, power factor, THD current
and THD voltage.
Based on the above mentioned measurements ElNet PFC
corrects the power factor by switching the capacitors.
Elnet PFC enables automatic identification of capacitors' size
and its connection in various methods.
ElNet PFC Main Menu includes the following functions:
Figure 2.1 – Main Menu
Controller's data screen - enables displaying the readings of power
factor and the capacitor status.
Voltage, Current, Hz screen - enables displaying the readings of
voltage, current and frequency measurements.
Power Factor, THD screen - enables displaying the readings of
power factor, THD voltage and current per phase.
Settings screen - enables setting all values requested for proper
operation of the power factor controller.
Indice
