Siemens LMV36.520A1 - Control of Fan Motor with Pneumatic Fuel-Air Ratio Control

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Building Technologies Division Basic documentation LMV36... CC1P7544en
Infrastructure & Citiies Sector 13 Fan control 25.09.2013
Value Error Remedy
-22 Air actuator not referenced
Air actuator is not referenced or has lost its reference.
1. Check if the reference position can be approached.
2. Check if actuators have been mixed up.
3. If error only occurs after the start of standardization,
the actuator might be overloaded and cannot reach its
destination.
-23 VSD deactivated
Standardization was started with VSD deactivated
 activate the VSD and repeat standardization
-24 No valid operation mode
Standardization was started without valid operation
mode
 activate valid operation mode and repeat
standardization
-25 Pneumatic air-fuel ratio control
Standardization was started with pneumatic air-fuel ratio
control
→ standardization with pneumatic air-fuel ratio control is
not possible
-128
Running command with no preceding
standardization
VSD is controlled but not standardized
 make standardization
-255 No standardized speed available
Motor turns but is not standardized
 make standardization
The result of speed standardization (100% speed) can be read out via parameter. The
speeds acquired by the 2 microcontrollers can differ by about 1.5%, the reason being
slightly different resonator frequencies.
No. Parameter
642.0 Standardized speed
Index 0 = speed 1
642.1 Standardized speed
Index 1= speed 2 (internal monitoring)
13.12 Control of fan motor with pneumatic fuel-air
ratio control
If control of the fan motor is employed for burners with pneumatic air-fuel ratio control,
only the control path is used. There is no need to connect a speed feedback signal and
to have speed control (for operating modes, refer to chapter Selection of operating
mode).