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Building Technologies Division Basic documentation LMV36... CC1P7544en
Infrastructure & Citiies Sector 7 Basic unit 25.09.2013
7.5.5.2. Alarm upon prevention of startup
If start prevention occurs, it is shown on the display of the AZL2...
Start prevention takes place only when a heat request is delivered and when one of the
startup criteria is not fulfilled.
The time to elapse from prevention of startup to display on the AZL2... is set to a fixed
value of 5 seconds.
In addition, it is possible to indicate preventions of startup via the alarm output. This
function can be activated per parameter.
No. Parameter
210
Alarm in the event of start prevention
0 = inactive
1 = active
If Alarm in the event of start prevention is activated via the alarm relay, prevention of
startup and lockout can only be distinguished via the display on the AZL2... Preventions
of startup are displayed as Err:, lockouts as Loc:.
Note
If, in the event of prevention of startup, reset contact on the LMV36... basic unit (X8-
04 pin 1) is pressed, the unit locks out manually.
The time from occurrence of prevention of startup to indication by the alarm contact
equals the time to the display on the AZL2...
7.5.5.3. Possible preventions of startup
On the normal display, error code 201 is translated to text display OFF UPr0 or OFF
UPr1 (UPr = unprogrammiert = not programmed); the numerical value appears in the
error history.
Error
code
Diagnostic
code
Meaning for the LMV36... system
201 OFF
UPr0 or
OFF UPr1
1 No operating mode selected
2…3 No fuel train defined
4…7 No curve defined
8…15 Standardized speed undefined
16…31 Backup / restore was not possible
Other preventions of startup:
3 4 Air pressure on – prevention of startup
4 2 Extraneous light during startup – prevention of startup
14 64 POC open- prevention of startup
22
OFF S
1 Safety loop / burner flange open- prevention of startup
83 # Speed error VSD
97 # Error relay supervision
0 Safety relay contacts have welded or external power supply
fed to safety relay
No. Parameter
642
Standardized speed
Index 0 = speed 1
Index 1 = speed 2 (internal monitoring)
935 Absolute speed
936 Standardized speed
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