Novar NOVAR-1xxx NRC Operating Manual - Controllers
Novar-NRC
KMB systems
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2. The „Novar1xxx NRC“ Special Version Power Factor
Controllers
The „NRC“ special version is available for following Novar power factor controller (PFC) models :
1106, 1114, 1206, 1214 ( marking example : Novar1214 NRC). The 1414 and 1312 models can be
delivered with limited functionality only – see below.
The PFCs are equipped with a RS-485 communication interface and with the special version firmware
„0E“ that allow, in combination with the NRC86 remote controller, either a remote controlled power
factor operation mode or a remote controller outputs operation mode .
From point of view of hardware and installation, the „NRC“-version PFCs don’t differ from standard
PFC models (with exception of models Novar1414 NRC and Novar1312 NRC, see below) and detailed
description can be found at the standard Novar1xxx operation manual. The only difference is their
firmware – they are equipped with special version firmware „0E“. The PFCs are marked with the „0E“
code :
•
on the panel of the controller at initial phase after supply voltage is applied. When the
firmware version is displayed the first two characters of displayed string „0E1.3“ stands for
special firmware version 0E, and the last two stands for basic firmware version 1.3.
•
at firmware window of the product label on the rear panel of the controller. For example
marking „1.3/OE“ means basic firmware version 1.3 and the character after a slash mean
special version „0E“
The only limitation of this firmware version is that the Modbus communication protocol is not
supported. All of other features are the same as the standard version.
The Novar1414 NRC and the Novar 1312 NRC models differ, moreover, from the standard models by
not allowing automatic connection detection and automatic sections’ powers recognition. Therefore,
the type of connection (parameter No. 16) and individual sections’ power sizes (parameter No. 25)
must be entered manually.
2.1 Operation
2.1.1 Remote Controlled Power Factor (Cosinus) Mode – the „RCC“ Mode
The Novar1xxx NRC PFC (or several PFCs) is connected to the NRC86 remote controller through a
RS-485 communication link. Using additional parameters of the „0E“ special firmware the PFC can be
set up to the RCC-mode (Remote Controlled Cos
ϕ
). After being set, the PFC periodically reads serial
number of remote controlled PF value in range 1 ÷ 5 from the NRC86 unit.
In the PFC it is possible to preset five PF values corresponding to the remote controlled PF serial
numbers. Default values are –0.95 / -0.97 / 1.00 / 0.97 / 0.95 , but they can be freely changed.
According this setting the PFC keeps preset target PF value that is dynamically controlled by the
remote controlled PF serial number from the NRC86 unit ( standard target PF value in parameter 01
has no meaning in this mode).
Simultaneously, other NRC86 units (up to six, i.e. seven units in total) in function of remote controlled
outputs (see below) can be connected to the communication link too.