CIRCUTOR CDP-0 User Manual
Dynamic power control
CDP- 0, CDP- G
INSTRUCTION MANUAL
(M98250001-03-15A)
CDP
2 Instruction Manual
CDP
Incorrect handling or installation of the unit may result in injury to personnel as well
Consult the instruction manual b efore using the unit
SAFETY PRECAUTIONS
Follow the warnings described in this manual with the symbols shown below.
DANGER
Warns of a risk, which could result in personal injury or material damage
.
ATTENTION
Indicates that special attention should be paid to a specific point.
If you must handle the unit for its installation, start-up or maint e nance, the following should be taken into consideration:
as damage to the unit. In particular, handling with voltage applied may result in electric shock, which may cause death or serious injury to personnel. Defective inst allation or maintenance may also lead to the risk of fire.
Carefully read the manual prior to connecting the unit. Follow all installation and
maintenance instructions throughout the unit's working life. Pay special attention to
the installation standards of the National Electrical Code.
In this manual, if the instructions marked with this symbol are not respected or carried out correctly, it can result in injury or damage to the unit and /or installations
CIRCUTOR, SA reserves the right to modify features or the product manual without prior notification.
DISCLAIMER
CIRCUTOR, SA
reserves the right to make modifications to the device or the
unit specifications set out in this instruction manual without prior notice.
CIRCUTOR, SA
, on its web site, supplies its customers with the latest versions
of the device specifications and the most updated manuals.
www.circutor.com
.
Instruction Manual 3
CDP
CONTENTS
SAFETY PRECAUTIONS .................................................................................................................... 3
DISCLAIMER ........................................................................................................................................ 3
CONTENTS .......................................................................................................................................... 4
LOG OF REVISIONS ........................................................................................................................... 6
1.- VERIFICATION UPON RECEIPT .................................................................................................. 7
2.- PRODUCT DESCRIPTION ............................................................................................................ 7
3.- INSTALLATION OF THE UNIT ...................................................................................................... 8
3.1.- PRELIMINARY RECOMMENDATIONS ......................................................................................8
3.2.- INSTALLATION...............................................................................................................................9
3.3.- LASER MARKING ..........................................................................................................................9
3.4.- UNIT TERMINALS .......................................................................................................................10
3.5.- CONNECTION DIAGRAMS .......................................................................................................11
3.5.1. AUXILIARY POWER SUPPLY ............................................................................................11
3.5.2. COMMUNICATIONS CONNECTION .................................................................................11
3.5.3. VOLTAGE MEASUREMENT AND CURRENT CONNECTION .....................................14
4.- OPERATION .................................................................................................................................. 15
4.1.- OPERATING PRINCIPLE ...........................................................................................................15
4.1.1. DESCRIPTION OF THE MEASUREMENT SYSTEM .....................................................15
4.1.2. OPERATION OF THE GRID INJECTION PROTECTION RELAY.................................15
4.1.3. MANAGEMENT OF NON-CRITICAL LOADS (CDP-G Model) ......................................19
4.2.- APPLICATIONS ............................................................................................................................21
4.2.1. BASIC SINGLE-PH A SE C ON NEC T I O N ...........................................................................21
4.2.1.1. Voltage connection ............................................................................................................21
4.2.1.2. Current connection ............................................................................................................22
4.2.2. SINGLE-PHASE CONNECTION WITH MONITORING ..................................................22
4.2.2.1. Voltage connection ............................................................................................................23
4.2.2.2. Current connection ............................................................................................................23
4.2.3. BASIC THREE-PHASE CONNECTION ............................................................................23
4.2.4. THREE-PHASE CONNECTION WITH MONITORING ...................................................24
4.3.- OPERATING EXAMPLES FOR THE CDP-G MODEL ............................................................25
4.3.1. SINGLE-PHASE INSTALLATION WITH 1 LOAD TO BE CONNECTED .....................25
4.3.2. SINGLE-PHASE INSTALLATION WITH 3 LOADS TO BE CONNECTED ...................28
4.4.- KEY FUNCTIONS ........................................................................................................................34
4.5.- LED INDICATORS .......................................................................................................................35
4.6.- DISPLAY ........................................................................................................................................36
5.- DISPLAY AND CONFIGURATION .............................................................................................. 38
5.1. MEASURES MENU ......................................................................................................................38
5.2. NETWORK MENU ........................................................................................................................41
5.2.1. DHCP ASSIGNMENT ...........................................................................................................42
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CDP
5.2.2. DHCP OPTION: YES ............................................................................................................43
5.2.3. DHCP OPTION: NO ..............................................................................................................43
5.3. SYSTEM MENU ............................................................................................................................45
6.- COMMUNICATIONS..................................................................................................................... 46
6.1. CONFIGURATION WEB SITE .....................................................................................................46
6.1.1. CDP Setup..............................................................................................................................48
6.1.2. Power control & Data logger ................................................................................................50
6.1.2.1. Inverter ................................................................................................................................50
6.1.2.2. Control .................................................................................................................................51
6.1.2.3. Inverse current relay ..........................................................................................................54
6.1.2.4. Auxiliary load relays ...........................................................................................................54
6.1.2.5. Data logger .........................................................................................................................56
6.1.3. Analyzers setup .....................................................................................................................56
6.1.4. Network & Security Setup ....................................................................................................57
6.1.5. Save setup, Load default setup and Reset CDP ..............................................................58
6.2. DISPLAY WEB SITE .....................................................................................................................60
6.2.1. CDP AS A DATA LOGGER ..................................................................................................61
7.- TECHNICAL FEATURES ............................................................................................................. 67
8.- MAINTENANCE AND TECHNICAL SERVICE .......................................................................... 69
9.- GUARANTEE ................................................................................................................................ 69
10.- CE CERTIFICATE ....................................................................................................................... 70
APPENDIX A: M O DBUS MAP ......................................................................................................... 71
Instruction Manual 5
CDP
Date
Revision
Description
M98250001-03-13A
Original version
07/14
M98250001-03-14A
General revision
09/14
M98250001-03-14B
Introduction model CDP-G
Changes in the following sections:
6.1.2.3.- 6.1.2.5.- 6.1.5. – Appendix A
LOG OF REVISIONS
Table 1: Log of revisions.
01/15 M98250001-01-15A
3.5.2.- 4.1.2.- 4.6.- 5 – 5.2.- 5.3. -6.1.1.- 6.1.2.1.-
Note: The images of the units are solely for the purpose of illustration and may
differ from the original uni t.
6 Instruction Manual
CDP
1.- VERIFICATION UPON RECEIPT
Check the following points when you receive the unit:
a) The unit meets the specifications described in your order.
b) The unit has not suffered any damage during transport.
c) Perform an external visual inspection of the unit prior to switching it on.
d) Check that it has been deliv ered w i th the foll owing:
- An installation guide.
If any problem is noticed upon reception, immediately contact the
transport company and/or CIRCUTOR's after-sales service.
2.- PRODUCT DESCRIPTION
CDP units are a family of dynamic power controllers that shift the operating point
of the solar field, enabling regulation of the inverter's generation level based on
user consumption.
The unit features:
-1 Ethernet communications channel for Online monitoring from any PC or
mobile device with a web browser.
- 20-character, 2-line display for viewing all the electric variables measured by
the unit.
- 6 indicator LEDs indicating the communications and alarm status in real time.
- 4 keys to browse the menu.
The CDP-G model can manage up to 3 non-critical loads.
Instruction Manual 7
CDP
In order to use the unit safely, it is critical that individuals who handle it
Disconnect the unit from the power supply (unit and measuring system
3.- INSTALLATIO N OF THE UNIT
3.1.- PRELIMINARY RECOMMENDATIONS
follow the safety measures set out in the standards of the country
where it is being used, use the necessary personal pr ot ecti ve equipment, and pay attention to the various warnings indicated in this instruction manual.
The
The power supply plug must be disconnected and measuring systems switched
off before handling, altering the connections or replacing the unit. It is dangerous
to handle the unit while it is powered.
Also, it is critical to keep the cables in perfect condition in order to avoid accidents, personal injury and damage to installations.
The manufacturer of the unit is not responsible for any damage resulting from
failure by the user or installer to observe the warnings and/or recommendations
set out in this manual, nor for damage resul ting from the use of non-original
products or accessories or those made by other manufacturers.
If an anomaly or malfunction is detected in the unit, do not use the unit to take
any measurements.
Inspect the work area before taking any measurements. Do not take measurements in dangerous areas or where there is a risk of explosion.
unit must be installed by author i sed and qual ified staff.
CDP
power supply) before maintaining, repairing or handling the unit's connections.
Please contact the after-sales service if you suspect that there is an
operational fault in the unit .
8 Instruction Manual
CDP
Terminals, opening covers or removing elements can expose parts that
are hazardous to the touch while the unit is powered. Do not use the
3.2.- INSTALLATION
Install the unit on a DIN 46277 rail (EN 50022). All connections are located
inside the electric panel.
unit until it is fully installed.
3.3.- LASER MARKING
The front view of the CDP shows that the numerical identification of the terminals
and symbols associated with their features have been marked with a laser.
The side view shows the electrical features of the unit and a diagram of its
single-phase connection, illustrating the user, grid and inverter power
measurement connection.
Figure 1: Description of the laser marking.
Instruction Manual 9
CDP
Unit terminals
1: Voltage measurement VL1
17: Auxiliary power supply
3: Voltage measurement VL2
18: Auxiliary power supply
5: Voltage measurement VL3
19: DC Auxiliary power supply (-)
6: Voltage measurement neutral
20: DC Auxiliary power supply (+)
8: Inverse current relay 4 /
Auxiliary relay 4 (NC)
9: Inverse current relay 4 /
Auxiliary relay 4 (COM)
10: Inverse current relay 4 /
Auxiliary relay 4 (NO)
11: Auxiliary relay 3
24: L1 current measurement
12: Auxiliary relay 3
28: Digital input 1
13: Auxiliary relay 2
29: Digital input 2
14: Auxiliary relay 2
30: Digital input 3
15: Auxiliary relay 1
31: Digital input 4
16: Auxiliary relay 1
36: Digital inputs common
3.4.- UNIT TERMINALS
Table 2: List of CDP terminals.
21: Current measurement common
22: L3 current measurement
23: L2 current measurement
Figure 2: CDP terminals
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CDP
Equivalence between the single-phase and three-phase connection
Connection
Single-phase connection
Three-phase connection
VL1 – IL1
User consumption
Phase 1 consumption
VL2 – IL2
Consumption from the grid
Phase 2 consumption
VL3 – IL3
Power injected by the inverter
Phase 3 consumption
AC power supply
DC power supply
Description of the communications channels
Channel
Description of the channel
R1
Ethernet communications channel
Channel for communicating with the inverter:
RS422/RS485/RS232
Channel for communicating with the external measuring parts:
RS485
3.5.- CONNECTION DIAGRAMS
Table 3: Equivalences between the single-phase and three-phase connection.
3.5.1. AUXILIARY POWER SUPPLY
The unit has terminals for supplying it either AC voltage (17-18) or DC voltage
(19-20):
Figure 3: AC and DC power supply connection.
3.5.2. COMMUNICATIONS CONNECTION The CDP has three communications channels referred to as R1, R2 and R3.
Table 4: Des cription of the communications channels.
R2
R3
Instruction Manual 11
CDP
Description of the R2 communications channel connector
Description of terminal
RS-422
RS-485
RS-232
1
TxD +
A+
CTS
2
RxD –
NC
(1)
RTS
3
TxD -
B-
RX
4
RxD +
NC
(1)
TX
GND
GND
GND
Description of the R3 communications channel connector
Description
of terminal
Communication
s channel
5
GND
6
B- 7 A+
Figure 4: Communications channels.
The removable connector terminals are described as follows:
Table 5: Description of the R2 channel terminals.
Terminals
5
(1)
NC: Not connected.
Table 6: Des cription of the R3 channel terminals.
Terminals
RS-485
The R2 channel is used for communications with the inverter and the R3 to
create a network with the auxiliary units that help measure the power in threephase installations.
Note: For the proper working of RS-485 communications, always connect the
GND terminal.
12 Instruction Manual
CDP
Correspondence between the CDP and CVM Mini connection
CDP
CVM MINI
Terminal
Description
Terminal
Description
5
GND
2
GND
6
B- 1 B-
Figure 5: Communications with the inverter and the CVM Mini.
Connection diagram fo r CDP communications with the external CVM Mini:
Figure 6: CDP connection with the external CVM Mini.
Table 7: Connection of communications between the CDP and the CVM Mini.
7 A+ 3 A+
To ensure that the CDP can communicate with the external CVM Mini, this must
be configured as per Table 8:
Instruction Manual 13
CDP
Configuration of the external CVM Mini.
Parameter
Value
Peripheral number
Configurable
Bauds
Configurable
Bits
8
Parity
NO
Stop bits
1 Stop bit
Transformer models
MC3 – three-phase
transformer
Models:
chosen ratio in the measuring unit.
Table 8: Configuration of the external CVM Mini.
It is recommended that a category 5e FTP cable or higher is used and a twisted
pair must be used for each earth leakage signal pair.
3.5.3. VOLTAGE MEASUREMENT AND CURRENT CONNECTION
The CDP measures current using the MC1 or MC3 transformers with a
secondary current of 250 mA
Table 9: Current measurement transformer models.
MC1- 1 transformer per phase
Models 63, 125 and 250 A.
150/200/250A, 250/400/500A,
50/100/150A, 500/1000/1500A,
1000/1500/2000 A
Each transformer has 3 ratio ranges,
changing a connection cable and the
14 Instruction Manual
CDP
4.- OPERATION
4.1.- OPERATING PRINCIPLE
One of the main features of the CDP is that it can measure all the energy flows
of the installation:
Energy consumed by the user.
Energy generated by the inverter.
Energy consumed or injected into the grid.
The inverter power must be configured in the unit and, through a
communications channel, the CDP can adapt generation to energy consumption
with the aim of achieving zero grid injection
The CDP generates a database with all the power and energy information for
every measuring point, including the inverter's regulation percentage.
The following functions have also been implemented in the CDP:
• Grid injection alarm control.
• Management of non-critical loads, CDP-G model.
4.1.1. DESCRIPTION OF THE MEASUREMENT SYSTEM
The CDP measures the user's voltage and current and uses these values to
calculate the consumed power. If the power generated by the inverter differs
from that consumed, the unit changes the inverter's working setpoint to adjust it
to the real-time needs o f the inst al lat ion.
4.1.2. OPERATION OF THE GRID INJ ECTION PROTECTION RELAY
If measuring the power consumed from the grid, both in single-phase and threephase installations, the CDP can control a redundant grid current injection
protection relay. Relay number 4 is used for this function, by default the relay
status is NC (terminals 9-10).
Table 10 describes the parameters that can be configured in the CDP in relation
to the control tasks of this function:
Instruction Manual 15
CDP
Configuration parameters for the grid injection protection relay
Name
Description
Units
Enable inverse
current relay
Activation of the inverse current
protection
Stop time
Grid injection validation time
Seconds
Reconnection time
Reclosing time
Seconds
Max. Disconnections
Maximum number of reconnections
-
Disconnect. Timeout
Maximum reconnection time
Seconds
Table 10: Configuration parameters for the grid injection protection relay.
-
If power is injected into the grid during the period defined by the Stop time
parameter, relay number 4 (NO (terminals 9- 10)) is desactivated (If Stop time is
programmed with the value 0 this function remains deactivated). In addition, an
orange alarm icon appears on the web site, as shown in Figure 7:
Figure 7: Hardware control alarm activated.
When the current injected into the grid disappears, after the Reconnection
time, the alarm status is deactivated.
Figure 8: Inverse current relay reconnection time.
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CDP
If the maximum number of reconnection attempts defined in the Max
Disconnections parameter is reached within the time defined in the maximum
reconnection period, Disconnect. Timeout parameter, the unit definitively
activates the alarm.
Figure 9: alarm reconnection sequence.
The following indications appear in the CDP when the reconnection sequence
has been completed:
• Alarm LED: The alarm LED is activated in the CDP indicating that power
is being injected into the grid and that the reconnection sequence is
complete.
Figure 10: Inverse current relay alarm.
• Unit screen: A screen appears on the CDP indicating that the unit has
activated the inverse current protection relay, and there is an option to
unlock it. The option NO appears on the home screen; this can be
changed with the UP and DOWN keys to YES. Press the OK key to
validate the selected option.
Instruction Manual 17
CDP
Figure 11: Inverse current alarm screen.
If NO is selected, the alarm remains permanently activated. If the OK key
is pressed on the main screen, the option to deactivate the inverse current
alarm is displayed.
Figure 12: Inverse current alarm display.
If the inverse current alarm is activated, although the unit turns off and on
again, this condition is memorised and the alarm notification will appear
on the screen indicating that it is possible to unlock it.
Web site: The icon is red indicating that the alarm has been activated.
Figure 13: Inverse current relay alarm activated.
If you press above the alarm icon a message will appear asking if you want
to deactivate the grid injection alarm. You can accept or cancel this option as
shown in Figure 14.
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CDP
Figure 14: Deactivating the alarm on the web site.
4.1.3. MANAGEMENT OF NON-CRITICAL LOADS (CDP-G Model)
This functionality allows you to add non-critical loads depending on if more
power can be obtained from the inverter. This management can be manual or
dynamic and is carried out through the use of the system's auxiliary relays
(Terminals 11 to 16 of Table 2).
Manual management is performed from the configuration web site, from which
you can view and modify the status of the relays (Figure 15).
Figure 15: Manual management of no n-critical loads from the web site.
When managing dynamic control, the loads are connected based on having
met two conditions:
1.-
Setpoint value ≤ Maximum modulation value.
100 .
Equation 1: Condition 1 for load connection.
Where the Maximum modulation value is the ratio between the power
consumed by the user and the maximum power that can be obtained by the
configured inverters. In other words, the maximum modulation value (%) is:
Instruction Manual 19
CDP
Equation 2: Maximum modulation value.
100
2.-
If Injection Margin = 0%
The Grid power < ( 2 x 0.03 x Consumed power)
Equation 3: Condition 2 for load connection (Injection Margin = 0%).
If Injection Margin ≠ 0%
The Grid power < ( 2 x Injection Margin x Consumed power)
Equation 4: Condition 2 for load connection (Injection Margin ≠ 0%).
As soon as conditions 1 and 2 are met, a new load will be added to the system
via the unit's auxiliary relays.
The loads will be disconnected, based on the maximum grid contribution. This
parameter is the ratio between the power supplied to the grid and the sum of the
powers of the loads managed by the system.
Grid
· 100
GC
Equation 5: Maximum grid contribution.
As soon as the value is greater than or equal to the value programmed by the
user, the last relay to be activated will be deactivated.
To ensure correct system stability, a minimum reclosing time (programmable by
the user) must pass between the activation and deactivation of two loads or a
single load.
The order in which loads are activated is another parameter that can be set by
the user. The order may be set as: connection by priority or rotating connection.
Connection by priority: In this case the user sets the order in which
loads are to be activated.
Rotating conne ction: Each connection cycle begins with a different load.
In other words, the first connection cycle begins by connecting load 1,
then 2 and finally 3. The following connection cycle will begin with the load
from relay 2, then 3 and finally 1, and so on and so forth.
The disconnection order for both modes is based on a LIFO system in which the
last load connected to the system will be the first load to be disconnected.
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CDP
4.2.- APPLICATIONS
The CDP is the ideal unit for managing photovoltaic installations for selfconsumption with and without grid injection.
Four types of configurations can be distinguished depending on the type of grid
connection:
Basic single-phase connection, in which the CDP only measures the
power consumed by the user.
Single-phase connection with monitoring, the CDP measures the
power consumed by the user, the power generated by the inverter and the
power consumed from the gri d.
Basic three-phase connection, in which the CDP only measures the
power consumed by the user.
Three-phase connection with monitoring, the CDP measures the
power consumed by the user, the power consumed from the grid and
calculates the power generated by the inverter.
The different configurations are described below.
4.2.1. BASIC SINGLE-PHASE CONNECTION
The CDP has a voltage measuring channel (VL1) and a current measuring
channel (IL1) and measures the single-phase power consumed by the user
using a current transformer (an MC1 or channel of an MC3). In this case, since it
does not measure the grid power, it cannot have the grid injection protection
relay function.
Figure 16: Connection diagram for the single-phase measurement system.
4.2.1.1. Voltage connection
For the basic single-phase connection, terminals VL1 and N must be connected
to the single-phase grid (it is recommended that VL2 and VL3 are connected to
N to avoid false measurement s due to noi s e) .
Instruction Manual 21
CDP
Figure 17: Voltage connection diagram.
4.2.1.2. Current connection
Only one MC3 channel must be used to measure the current, in this case
number 1. The cable direction is that indicated in Figure 18.
Figure 18: Current connection diagram.
4.2.2. SINGLE-PHASE CONNECTION WITH MONITORING
The CDP has three voltage measuring channels (VL1, VL2 and VL3) and three
current measuring channels (IL1, IL2 and IL3) and uses an MC3 current
transformer to measure the power consumed by the user (VL1, IL1), the power
consumed from the grid (VL2, IL2) and the power generated by the inverter
(VL3, IL3).
Figure 19: Connection diagram for the single-phase measurement system with
monitoring.
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CDP
4.2.2.1. Voltage connection
For the single-phase connection with monitoring, the terminals VL1, VL2 and
VL3 must be connected and bridged and connected to the single-phase grid
phase and terminal N to the neutral.
Figure 20: Voltage connection diagram,
4.2.2.2. Current connection
The three channels of the MC3 must be used to measure the current. The cable
direction is that indicated in Figure 21.
Figure 21: Current connection diagram.
4.2.3. BASIC THREE-PHASE CONNECTION
The CDP has three voltage measuring channels (VL1, VL2 and VL3) and three
current measurement channels (IL1, IL2 and IL3), and will measure the threephase power consumed by the user using an MC3 current transformer. In this
case, since it does not measure the grid power, it cannot use the grid injection
protection relay funct ion.
Instruction Manual 23
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