Viessmann EM-100/173, Техническое описание

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Control system (BMS 2007)
VITOBLOC 200
CHP switching cabinet 17
5780078
GB
Gas monitoring
The gas pressure is monitored via gas pressure guard and a digital input is set at the control system if there is a
malfunction. There is not only a gas pressure guard, but also an optional sealing test for the gas lane. The optional
sealing test is carried out on the cogeneration module when the cogeneration module is shut down (the ignition and
governor are off). A fault message is generated if the sealing test is deficient and the sealing test starts again if the
fault message is acknowledged via acknowledge button on the control system. The cogeneration module can only be
restarted when the sealing test has positive results.
Enabling in stand-by operation
The release of the enabling pulse in stand-by operation depends on voltage and frequency:
The governor adjusts the machine to 50 Hz in stand-by operation depending upon alternator load and relief.
Start-stop process
This is what the start-stop process looks like (no details):
start process stop process
1. start request 1. request off
2. cooling water pump on 2. relief active
3. ventilation on 3. relief limit reached
4. starter on 4. gas valves closed
5. governor on 5. alternator contact off
6. starting speed reached 6. lambda regulation off
7. ignition on 7. after-run time ignition and governor active
8. gas valves open 8. ignition and governor off
9. ignition speed reached 9. sealing test active (OPTIONAL)
10. starter off 10. after-run time cooling water pump and ventilation active
11. speed range reached (1,500 Upm) 11. cooling water pump and ventilation off
12. release synchronising 12. lambda control valve moves into the starting position
13. synchronising impulse 13. cogeneration module is off
14. alternator contact on
15. output regulation active
16. lambda regulation active
17. cogeneration module in operation
Tab. 18 Description of the functions, Part 4
– gas monitoring, enabling in stand-by operation and start-stop process changes
frequency window
voltage window