Novar NOVAR-1xxx NRC Operating Manual - page 13
Novar-NRC
KMB systems
13
In both of the remote control modes, actual state of the master PFC broadcast can be activated.
These options are identified with additional decimal point. When set, the PFC broadcasts its complete
actual state (all measured quantities actual values, outputs state etc.) during communication with the
NRC86 unit(s). Then, these values can be listed and viewed on the NRC86 unit (the first unit only in
case of the unit cascade) display in the same way as on the PFC display. It can be helpful during
installation or it can be optionally used for the PFC actual state monitoring by a third-party system
(program).
But if not necessary it is recommended to use remote control mode without PFC actual state
broadcast during common power factor compensation operation. At this setting, the remote control
commands are essentially shorter and due to this the data interchange is faster and more reliable.
Then actual PF value and the PFC alarm state only can be checked on the NRC86 display.
2.6 Parameters 80,81 – Remote Controlled Target PFs and Remote
Controlled PF Serial Number
These parameters are relevant only when any of the RCC-mode is active. Otherwise they are not
displayed.
In the RCC-mode , co called serial number of remote controlled PF is periodically transferred from the
(first) NRC86 unit to the PFC (or multiple PFCs). Its range is 1 ÷ 5 and actual value is displayed in
parameter 81with identification string „ECn“; for example, if its value is 2, the
ECn2
ECn2
ECn2
ECn2
string is
displayed.
If connection between the PFC and the NRC86 unit is interrupted, the PFC keeps last correctly read
value from the (first) NRC86 unit for approx. 30 seconds and during this indicates with slowly flashing
decimal point that the displayed vale is not actual. If the connection is not restored during approx. 1
minute, the serial number of remote controlled PF is set automatically to its default value 3. This state
is indicated with quickly (approx. three times per second) flashing decimal point.
The parameter is set to this default value automatically after the PFC startup and keeps it until
receives first actual value from the NRC86 unit.
In side branch of parameter 80 you can set five remote controlled target PFs
EC-1
EC-1
EC-1
EC-1
through
EC-5
EC-5
EC-5
EC-5
,
corresponding to remote controlled PF serial number value. The PF range is the same as parameter
01 has, but it is not possible to set the value in angle degrees. Default values are –0.95 / -0.97 / 1.00 /
0.97 / 0.95 .
According this setting and actual value of remote controlled PF serial number, the PFC selects
corresponding PF from preset values
EC
EC
EC
EC-1
-1
-1
-1
through
EC-5
EC-5
EC-5
EC-5
, displays it in parameter 01 ( with
preceding “E” character) and uses it as actual target PF.