Circutor CDP Manual página 2

This manual is a CDP application note. For further information,
please download the full manual from the CIRCUTOR web site:
www.circutor.com
IMPORTANT!
The device must be disconnected from its power
supply sources (power supply and measurement)
before undertaking any installation, repair or han-
dling operations on the unit's connections. Contact
the after-sales service if you suspect that there is an
operational fault in the device. The device has been
designed for easy replacement in case of malfunction.
The manufacturer of the device is not responsible
for any damage resulting from failure by the user or
installer to heed the warnings and/or recommenda-
tions set out in this manual, nor for damage resulting
from the use of non-original products or accessories
or those made by other manufacturers.
1. INTRODUCTION
For the CDP controller to appropriately manage ABB inverters, they
both must communicate correctly and be properly programmed.
This application note is not intended to replace the CDP manual, but
an additional guide to those who want to interconnect both devices.
However, each device's guides and manuals are the documents that
should be consulted, and each company will be in charge of provid-
ing the corresponding technical support.
2. COMPATIBLE INVERTERS
ABB has several inverter models that can be managed using the
CDP dynamic power controller:
 TRIO-5.8-7.5-8.5
 TRIO-20.0-27.6
 TRIO-50.0-TL
 TRIO-TM-50.0
3. CONNECTION
The communication between the CDP and the inverters is carried
out using the RS-485. The RS-485 bus allows connecting up to 100
inverters, although most domestic installations have between 1 and
3 inverters.
IMPORTANT!
The range of ABB TRIO-5.8-7.5-8.5 inverters requires
the RS-485 communications card, called "PMU EX-
PANSION BOARD". This card is NOT equipped in
standard inverters and must be directly ordered from
the manufacturer.
The communications cable must be connected to the specific RS-
485 connector on the "PMU EXPANSION BOARD" board or to the
inverter's own RS-485 connector (depending on the model).
A three-wire shielded cable is required to connect the RS-485 com-
munications line. The cable's specifications are provided in Figure 1.
Figure 1: Characteristics of the communications cable.
To achieve a proper communication between the CDP and the invert-
er, the RS-485 bus must be wired as described in Tables 1 and 2.
Table 1: List of terminals : TRIO-5.8-7.5-8.5 inverters.
TRIO-5.8-7.5-8.5 inverters
CDP INVERTER
R2 channel
Connector RS-485 S - Slave port
communications connector
Terminal Description Description
S+T/R
1 A+
3 B- S-T/R
GND RTN
5
Table 2: List of terminals : TRIO inverters.
TRIO inverters
CDP INVERSOR
R2 channel
Connector (a11) RS-485 card
communications connector
Terminal Description Description
PMU ,+T/R
1 A+
3 B- PMU ,-T/R
GND GND
5
If there are several inverters in the RS-485 bus, wire the first invert-
er's +T/R and - T/R terminals to the next inverter's +T/R and - T/R
terminals, up to the bus' last inverter.
The last inverter of the RS-485 communications bus must always be
set to the activated bus termination resistor.
4. INVERTER CONFIGURATION
Below we explain how to configure the inverter using the display in
order to achieve a correct communication with the CDP:
1.- Peripheral number: From 2 to 63
2.- Protocol type: "Modbus Meter Interface or Modbus/RTU".
3.- Baud Rate: 9600 bauds.
4.- Peripheral number
If there is only 1 inverter, the peripheral number must be 02.
If there are several inverters:
 In cascade, which can either be single-phase connected to the
same phase or three-phase connected to the same three-phase AC
mains, they must have consecutive numbers from 02.
5. CDP CONFIGURATION
Access the CDP configuration website using a browser and via the
device's IP followed by /setup:
IP_equipo/setup
Below are the minimum parameters required configuring for correct
adjustment:
Figure 2: CDP configuration.
Inverter type: ABB
Inverter power: Total power of the inverters. If there is more than
one inverter, this value shall be the sum of all the powers of all
inverters.
Number of inverters: Total number of inverters connected to the
CDP by phase.
Examples:
2 single-phase inverters → Number of inverters: 2
3 three-phase inverters → Number of inverters: 3
3 single-phase inverters in a three-phase main (1 per phase) →
Number of inverters: 1
6 single-phase inverters in a three-phase main (2 per phase) →
Number of inverters: 2
Phase: Select the type of inverter:
single phase, single-phase inverter.
three phases, three-phase inverter (1) .
three single phase, single-phase devices in three-phase main.
(1) To ensure no injection to the mains, we must select the lowest
consumption phase as a reference (Min. Power phase).
IMPORTANT!
Consult the manual for more information on how to
configure the CDP.
6. REGULATION TEST
Below we detail a very simple process that ensures the correct
adjustment of the CDP:
With sufficient solar radiation, increase the real power of the invert-
ers to be controlled to a very high value, e.g. 1,000,000 W.
Save the setting.
Start up the CDP; we will see that the command sent by the CDP is
0 % or very close to 0 %.
Check that the inverters' output power matches this percentage. If
the inverters change their output power and adjust to the new com-
mand sent by the CDP, the adjustment is being carried out correctly..
IMPORTANT!
Do not forget to reprogram the CDP with the initial
inverter power value after completing the test.
Servicio técnico / Technical service
CIRCUTOR SAT: 902 449 459 (SPAIN) / (+34) 937 452 919
(out of Spain)
Vial Sant Jordi, s/n
08232 - Viladecavalls (Barcelona)
Tel: (+34) 937 452 900 - Fax: (+34) 937 452 914
e-mail : [email protected]