98
5
Functional Description with Process Diagrams
5.2.6.5 Process Sequence Chart
Principle sequence of a valve leakage test
Fig. 5-16 Principle sequence of a valve leakage test
* Calibrate name with parameter
5.2.6.6 Calculation Example
If the pressure monitor is also deployed to monitor the minimum gas pressure (logic signal ’Fu-
el train pressure > min’), the monitor must then be configured to the burner's minimum gas
pressure. If the pressure monitor is only deployed for the valve leakage test, the monitor must
be configured to half the gas inlet pressure
p
ine
.
The valve leakage test time
t3
is configured on the MCC burner control unit.
t3
must be con-
figured so that the maximum permitted valve leakage rate
Q
Leak
is reliably detected. In EN
1643 and ISO 23551-4, the maximum leakage rate is given as 0.1% nominal volumetric flow
of the gas or a minimum of 50 l/h.
Example 1
Burner output = 1000 kW
Fuel = H natural gas, calorific value = 10 kW/m
3
Nominal gas volumetric flow = 100 m
3
/h
Max. leakage rate = 0.1 m
3
/h or 100 l/h
Example 2
Burner output = 1000 kW
Fuel = propane, calorific value = 25.9 kW/m
3
Nominal propane volumetric flow = 38.6 m
3
/h
Max. leakage rate = 50 l/h (not 38.6 l/h)
Signal bar
Significant times and their parameters
Standard
Signal must be present.
t2
Filling time of the gas train*
P313
2.0 s
Signal must not be present.
t12
Block and bleed time of the gas train*
P334
3.0 s
Signal can be present.
t17
Valve leakage test time
P311
2.0 s
Содержание CMS
Страница 1: ...www lamtec de Sensors and Systems for Combustion Engineering Manual Combustion Management System CMS...
Страница 2: ......
Страница 42: ...41 4 CMS Components 4 2 5 Terminal Assignment Fig 4 9 AEC TPS 230 VAC or 120 VAC terminal assignment...
Страница 131: ...130 7 Operating Control and Displays 7 1 5 5 Deleting Curves Delete firing rate curve...
Страница 142: ...141 7 Operating Control and Displays Accessing channel information AL1 Fig 7 12 GUI6xx channel information...
Страница 148: ...147 7 Operating Control and Displays Channel configuration AL1 Fig 7 18 Channel configuration...
Страница 154: ...153 7 Operating Control and Displays Accessing the CO O2 settings AL2 Fig 7 24 CO O2 settings menu...
Страница 157: ...156 7 Operating Control and Displays Fig 7 27 System CRCs menu...
Страница 162: ...161 7 Operating Control and Displays Fig 7 32 IP setting menu...
Страница 163: ...162 7 Operating Control and Displays 7 2 8 User Settings Accessing the display settings Fig 7 33 Display settings menu...
Страница 164: ...163 7 Operating Control and Displays Accessing the language settings AL1 Fig 7 34 Language settings menu...
Страница 166: ...165 7 Operating Control and Displays Fig 7 35 Installation...
Страница 167: ...166 7 Operating Control and Displays Fig 7 36 Installation...
Страница 176: ...175 7 Operating Control and Displays Fig 7 49 Loading a protected dataset into the device...
Страница 198: ...197 7 Operating Control and Displays 1 Digital inputs 2 Digital outputs 3 PLC Signals 4 Analogue measurement values...
Страница 202: ...201 7 Operating Control and Displays Replacing a Module Fig 7 81 Module replacement menu...
Страница 271: ...270 10 Maintenance 6 Close the window Connection between PC and CMS is established Indication of the con nected CMS...
Страница 272: ...271 10 Maintenance How to update the firmware in the CMS AL2 1 Open the menu Firmware update 2 Prepare firmware update...
Страница 274: ...273 10 Maintenance Activating the Debug Data 1 Start CMS Remote Software 2 Set device online 3 Show debug data...
Страница 276: ...275 10 Maintenance 3 Restart CMS to complete the update...
Страница 282: ...281 12 Appendix 12 5 EU Declaration of Conformity...
Страница 283: ...282 12 Appendix...