Alarm Upon Prevention Of Startup; Possible Preventions Of Startup - Siemens LMV36.520A1 Basic Documentation

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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
Alarm in the event of start prevention
210 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 Diagnostic
code code
201 OFF 1
UPr0 or
OFF UPr1
2...3
4...7
8...15
16...31
3 4
4 2
14 64
22 1
OFF S
83 #
97 #
0
No. Parameter
Standardized speed
642 Index 0 = speed 1
Index 1 = speed 2 (internal monitoring)
935 Absolute speed
936 Standardized speed
Basic documentation LMV36...
7 Basic unit
Meaning for the LMV36... system
No operating mode selected
No fuel train defined
No curve defined
Standardized speed undefined
Backup / restore was not possible
Other preventions of startup:
Air pressure on – prevention of startup
Extraneous light during startup – prevention of startup
POC open- prevention of startup
Safety loop / burner flange open- prevention of startup
Speed error VSD
Error relay supervision
Safety relay contacts have welded or external power supply
fed to safety relay
CC1P7544en
25.09.2013