Selco C6200 FlexGen, Руководство по установке, Страница: 14 / 24

Selco C6200 FlexGen
Revision: 03-06-2014 Page 14 of 24
5.5 Analogue Inputs
The analogue inputs are used for external control of voltage, frequency and load. For example, the
analogue inputs can be used when two busbar sections are to be synchronized together or when the
gerator is to be synchronized to an incoming sharft generator (or the grid). The analogue inputs can
also be used in case the load of the generator needs to be remotely controlled e.g. in grid paralleling
application.
5.5.1 Voltage Input
The voltage input (terminal 24) is an analogue input. The input can be used for external control of
the generator voltage, provided that the F/V CTRL. DISABLE input has been activated (connected
to COM) or a grid parallel operation scheme is activated. The analogue control signal must be a
voltage between 0 and +5 V DC. The voltage input uses the COM terminal as reference. When not
used its is recommended that the voltage input is connected to COM. This is especially important if
the F/V CTRL. DISABLE input is made active while no signal is provided to the voltage input.
Terminal Signal Description
24 0 to +5 V DC Remote Voltage Control
26 COM Common reference
Please note that terminal 26 (COM) is internally connected to terminal 32 (Supply minus). In
rare situations
“ gound loops ” can cause noise to be injected into the application. Ground
loops happen when multiple COM connections between modules (e.g. parallel operating
C6200 units) exist. Ground loops can be avoid by only using terminal 32 as the common
connection point for all COM connections.
5.5.2 Frequency Input
Like thr voltage input, the frequency input is an analogue input. The input can be used for external
control of the generator frequency, provided that the F/V CTRL. DISABLE input is active
(connected to COM) or a grid parallel operation scheme is activated. The analogue control signal
must be a voltage between 0 and +5 V DC. The frequency input uses the COM terminal as
reference. When not used its is recommended that the frequency input is connected to COM. This is
especially important if the F/V CTRL. DISABLE input is made active while no signal is provided
to the frequency input.
Terminal Signal Description
25 0 to +5 V DC Remote Frequency Control
26 COM Common reference
Please note that terminal 26 (COM) is internally connected to terminal 32 (Supply minus). In
rare situations
“ gound loops ” can cause noise to be injected into the application. Ground
loops happen when multiple COM connections between modules (e.g. parallel operating
C6200 units) exist. Ground loops can be avoid by only using terminal 32 as the common
connection point for all COM connections.