Chapter 4 - Parameters and Menu Structure
Parameters (M3)
92 | 180
Siemens Industry, Inc.
Siemens BT300 HVAC Drive
DPD01809
Building Technologies
2016-06-07
Pressure Loss Compensation (M3.12.6)
Table 63: Pressure Loss Compensation.
Structure
Parameter
Unit
Min
Max
Default
ID
Description
P3.12.6.1
Enable SP 1
Disabled
Enabled
Disabled
1189
Enables the drive to raise or lower
the setpoint depending on output
frequency. SP 1 Max Comp.
(P3.12.6.2) is the compensation at
maximum frequency. This can be
used with incorrectly placed
sensors. For example, if a pressure
sensor is placed far away from the
wanted pressure and the error in
the measurement is in proportion to
the flow/output frequency.
0 = Disabled
1 = Enabled
P3.12.6.2
SP 1 Max Comp.
%
-214748.36
214748.36
0
1190
Value added proportionally to the
frequency.
Setpoint Compensation = SP 1 Max
Comp. (P3.12.6.2) * (Output
Frequency [M2.2.1]) - Min
Frequency [P3.3.1])/(Max
Frequency [P3.3.2] - Min Frequency
[P3.3.1])
P3.12.6.3
Enable SP 2
Varies Disabled
Enabled
Disabled
1191
Enables the drive to raise or lower
the setpoint depending on output
frequency. SP 2 Max Comp.
(P3.12.6.2) is the compensation at
maximum frequency. This can be
used with incorrectly placed
sensors. For example, if a pressure
sensor is placed far away from the
wanted pressure and the error in
the measurement is in proportion to
the flow/output frequency.
0 = Disabled
1 = Enabled
P3.12.6.4
SP 2 Max Comp.
%
-214748.36
214748.36
0
1192
Value added proportionally to the
frequency.
Setpoint Compensation = SP 2 Max
Comp. (P3.12.6.4) * (Output
Frequency [M2.2.1] - Min
Frequency [P3.3.1] / Max
Frequency [P3.3.2] - Min Frequency
[P3.3.1].)
PID Control Sequence Details
Dead band hysteresis (P3.12.1.9) and Dead band delay (P3.12.1.10)
The PID controller output is locked if the actual value stays within the dead band area around the reference for a
predefined time. This function prevents unnecessary movement and wear on actuators and valves.
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