Chapter 4 - Parameters and Menu Structure
Parameters (M3)
37 | 180
Siemens Industry, Inc.
Siemens BT300 HVAC Drive
DPD01809
Building Technologies
2016-06-07
Structure
Parameter
Unit
Min
Max
Default
ID
Description
P3.1.2.5
Preheat Function
Not Used
Temp Limit
Not Used
1225
Defines the use of the PreHeat Function
(P3.1.2.5).
0 = Not Used
1 = Always in Stop State
2 = Controlled by Digital Input
3 = Temp Limit (based on Heat Sink)
P3.1.2.6
Preheat TempLimit
ºF
-20
80
0
1226
Defines the temperature the heat sink
falls below for pre-heating the motor and
drive when PreHeat Function (P3.1.2.5)
is set to Temp Limit.
P3.1.2.7
Preheat Current
A
0
.5*IL
Varies
1227
Defines the DC current to be use for pre-
heating the motor and drive when
PreHeat Function (P3.1.2.5) is set to
Stop State.
P3.1.2.9
U/f Ratio Select
Linear
Squared
Varies
108
Type of U/F curve between zero
frequency and the field weakening point.
0 = Linear
1 = Squared
P3.1.2.15 Over Volt Contr
Disabled
Enabled
Enabled
607
Enable parameter for the over voltage
controller. When enabled, the drive
acceleration and speed can be modified
by the controller to prevent the drive
from tripping.
P3.1.2.16 Under Volt Contr
Disabled
Enabled
Enabled
608
Enable parameter for the over voltage
controller. When enabled, the drive
acceleration and speed can be modified
by the controller to prevent the drive
from tripping.
P3.1.2.17 StatorVoltAdjust
%
50
150
100
659
Parameter for adjusting stator voltage in
permanent magnet motors.
P3.1.2.18 Energy Optimization
Disabled
Enabled
Disabled
666
Enable parameter to have the drive
search for the minimum motor current in
order to save energy and to lower the
motor noise.
P3.1.2.19 Flying Start Options
Both
Directions
FreqRefDirection Both
Directions
1590
0 = Shaft direction is searched in both
directions.
1 = Shaft direction is searched in
setpoint direction only.
U/f ratio selection (P3.1.2.9)
Table 16: Ratio Selections.
Selection
Number
Selection Name
Description
0
Linear
The voltage of the motor changes linearly as a function of output frequency from zero frequency voltage
(P3.1.2.4) to the field weakening point (FWP) voltage at FWP frequency. This default setting should be
used if there is no special need for another setting.
1
Squared
The voltage of the motor changes from zero point voltage (P3.1.2.4) following a squared curve form from
zero to the field weakening point. The motor runs under-magnetized below the field weakening point and
produces less torque. Squared U/f ratio can be used in applications where torque demand is proportional to
the square of the speed (for example, in centrifugal fans and pumps).
Summary of Contents for BT300 LonWorks
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