Control system (BMS 2007)
18
CHP switching cabinet
VITOBLOC 200
5780078
GB
2.4
Modes
Automatic operation
The following modes are available:
The cogeneration module can be operated in the heat operation (parallel operation 100% output), current priority
operation (floating mode after external 0
–20 mA signal 50–100% output) and stand-by operation modes. Preliminary
start conditions are necessary for starting the cogeneration module such as lambda controller ready. There may not
be any malfunctions and all fault messages have to be acknowledged. In automatic operation, either there has to be
an external start request for parallel operation (heat or current) for starting (no network breakdown and the system-
tie circuit breaker has to be on) or the external start request for stand-by operation (with network breakdown; system-
tie circuit breaker has to be turned off). Internal release has to be issued (deselect and select after temperature).
Manual mode
Manual mode is available via level 2 (only with password) for start-up and service and you can run through the start-
stop process with the buttons below in individual steps.
Tab. 19 Automatic and manual mode
You can find other functions in the same menu that might be helpful in troubleshooting.
Historical memory min-max values)
You can find this button in the same menu on level 2:
The min-max values menu is a volatile memory that stores the lowest and highest analog values to the next reset
F8. This menu is an excellent aid for start-up, service and troubleshooting. These values are only reset when the
min-max menu is also open.
Options
You can get to the following submenus in the Option menu:
The "Voltages" item on the menu shows the mains voltage, alternator voltage and busbar voltage with their
frequencies. Pressing the F2 key twice shows the cooling water temperature and temperature sensors PT 100/2 and
PT 100/3.
Tab. 20 Historical memory and options
heat operation
current priority operation
stand-by operation
manual
cogeneration module in start readiness (basic prerequisite for all other buttons)
start
cogeneration module starts until it reaches the idle speed range (1,450
–1,550 Upm)
alternator
synchronising release and enabling
higher/lower
speed regulation in idle output regulation after enabling
cooling water pump
on/off
ventilator
on/off
min-max values
voltages
misfire menu for gas A and gas B
timer
