Selco
C6200 FlexGen
Revision: 03-06-2014
Page 18 of 24
5.8 Inputs
The inputs plug-in connector houses a number of general purpose inputs. The inputs work with
negative reference, meaning that the inputs are considered active when connected to negative
supply and inactive when disconnected.
Terminal
Signal
Description
41
C/B
External switch, output or relay
42
Manual
External switch, output or relay
43
Unload
External switch, output or relay
44
Reset
External switch, output or relay
45
F/V Ctrl Disable
External switch, output or relay
46
Dead Bus Lock
To be interconnected with the Dead Bus Lock terminals of each
C6200 FlexGen module in the system
5.8.1
C/B
The C/B input provides feedback from the generator circuit breaker and is used to determine wether
the breaker is open or closed. C/B is typically connected to COM through an auxiliary contact of
the breaker. The breaker is considered closed when the C/B input is at COM level.
Please note that the C/B input is very important to the function of the C6200 FlexGen. The
C/B input is used (together with the state af the voltage inputs) to determine the operational
situation of the system.
5.8.2
Manual
Activating the manual input will prevent the C6200 FlexGen from interfering with the speed and
voltage controls of the generator, unless it gets a command to do so via the programmable inputs
(terminals 15 to 22). The manual input is active when at COM level and inactive if left
disconnected.
5.8.3
Unload
The UNLOAD input is used to initiate a controlled unload of the generator whereafter the C6200
FlexGen will issue a trip signal to the breaker. Unload starts when the signal is put to COM level.
Disconnecting the unload signal during operation will causes reload and/or reconnection of the
generator.
5.8.4
Reset
Reset Alarm is used to reset the alarm relay. Reset Alarm is active when the input is at COM level.
5.8.5
F/V Ctrl. Disable
The F/V CTRL. DISABLE input is used to deactivate the voltage and frequency stabilization. This
input is considered active when the input is connected to COM level, and inactive when
disconnected. The signal is typically used when the generator is operated in parallel with a shaft
generator or the grid (power sources that determine the voltage and frequency). Other applications
are where the voltage and frequency is controlled by third-party equipment (through the voltage and
frequency analogue inputs on terminals 25 and 26).