Master-Slave Configuration - Icar RPC 8BGA Manuel Complet

ICAR PQS
For each alarm, it is possible to define:
the source that is the condition that generates the alarm,
o
the text of the message that must appear on the screen when this condition is met.
o
The properties of the alarm (just like for standard alarms), that is in which way that alarms interacts with the power
o
factor correction.
The condition that generates the alarm can be, for instance, the overcoming of a threshold. In this case, the source will be one of
the limit thresholds LIMx.
If instead, the alarm must be displayed depending on the status of an external digital input, then the source will be an INPx.
For every alarm, the user can define a free message that will appear on the alarm page.
The properties of the user alarms can be defined in the same way as the normal alarms. You can choose whether a certain alarm
will disconnect the steps, close the global alarm output, etc. See chapter 21.2 Alarm properties.
When several alarms are active at the same time, they are displayed sequentially, and their total number is shown on the status
bar.
To reset one alarm that has been programmed with latch, use the dedicated command in the commands menu.
For details on alarm programming and definition, refer to setup menu M26

16 MASTER-SLAVE CONFIGURATION

To further extend the flexibility of use of 8BGA power factor controller it is available the Master-Slave function, which allows, for
plants with high installed power, to compose a series of panels in cascade, each with its own controller and associated capacitor
banks.
This solution allows to expand in a modular way the power factor correction system, in case it becomes necessary because of the
increased needs of the plant.
In this configuration, measurements are made only from the first controller (Master) which controls a maximum of 32 logical steps
with commands that are then sent to all the slave units.
The slave controllers drive their steps as indicated by the master, while performing the 'local' protections like panel or capacitor
overtemperature, no-voltage release, harmonic protections etc.
The maximum possible configuration is one master with 8 slaves.
Example 1 (application in series):
It is required to create a system with 18 step of 40kvar each, divided into three identical panels with 6 step (240kvar) each. For
each panel, the 8 relay outputs of the controller are used as follows: the first six for the steps (OUT1. .6), the seventh for the
cooling fan (OUT7) and the last for the alarm (OUT8). On the master panel we will define 18 logical step of 50kvar. The steps
from 1 to 6 will be 'mapped' on the outputs OUT1 .. 6 of the master, those from 7 to 12 on the outputs OUT1 .. 6 of slave1 and
finally the steps from 13 to 18 on the outputs OUT1 .. 6 of the slave 2. In this case, the parameter P02.07 Smallest step power
will have to be set (on the master) to 40kvar.
Programming of the master:
PARAMETER
P02.07
P03.01.01...P03.18.01
P04.01.01...P04.06.01
P04.07101
P04.08.01
P05.01
P05.02
P05.03...P05.04
P06.01.01...P06.06.01
P06.07.01
P06.08.01
P07.01.01...P07.06.01
P07.07.01
P07.08.01
Programming of slave 1:
P05.02
Programming of slave 2:
P05.02
Example 2 (application in parallel):
A system provides 8 logical step for 400 kvar total. The system is organized on two panels. Each panel has 8 steps of 25 kvar.
The logical step are programmed as 8 banks of 50 kvar. The first step is 'mapped' on OUT1 both for the master and for slave1,
same for step 2 mapped on OUT2 on the master and the slave, and so on. When step1 is activated, it will result in the activation
of both the first bank of the master board (25kvar) and the first bank of the slave1 (25 kvar) for a total of 50kvar. In this case the
parameter P02.07 Smallest step power must be set (on the master) at the resulting value of 50kvar.
VALUE DESCRIPTION
40 40 kvar
1 All the 18 logic steps are 40kvar
Step 1...6 Outputs OUT1...OUT6 of the master are activated by logical steps 1...6.
Fan OUT7 of the master controls the ventilation system
All glb 1 OUT8 of the master controls global alarm 1
COM1 COM port used for the link
Master Role of master
ON Enables slave 1 and slave 2
Step 7...12 Outputs OUT1...OUT6 of slave 1 are activated by logical steps 7...12.
Fan OUT7 of slave 1 controls the ventilation system
All glb 1 OUT8 of slave 1 controls global alarm 1
Step 13...18 Outputs OUT1...OUT6 of slave 2 are activated by logical steps 13...18.
Fan OUT7 of slave 2 controls the ventilation system
All glb 1 OUT8 of slave 2 controls global alarm 1
Slave1 Role: slave1
Slave2 Role: slave2
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rev9 jan19