Operating Instructions

Siemens Application Siemens Industry, Inc. • 35
24-hour support [phone] (Dial 2)
3
3.5.4 Group 3.2: Start/Stop setup
Start/Stop commands are given differently depending on the control place.
Auto control place (I/O A): Start, stop and reverse commands are controlled by 2 digital inputs chosen
with parameters P3.5.1.1 and P3.5.1.2. The functionality/logic for these inputs is then selected with pa-
rameter P3.2.6 (in this group).
P3.1.2.5 Motor preheat function 0 3 0 1225
0 = Not used
1 = Always in stop state
2 = Controlled by DI
3 = Temp limit (heat sink)
NOTE: Virtual digital input
can be activated by Real
Time Clock
P3.1.2.6
Motor preheat tempe-
rature limit
-20 80 °C 0 1226
Motor preheat is switched
on when the heat sink tem-
perature goes below this
level (if par. P3.1.2.5 is set
to Temperature limit.
If limit is e.g. 10 °C (50 °F)
feeding current starts at 10
°C and stops at 11 °C
(51.8°)
(1 °C (1.8 °F) hysteresis).
P3.1.2.7 Motor preheat current 0
0.5*I
L
A Varies 1227
DC current for pre-heating
of motor and drive in stop
state. Activated by digital
input or by temperature
limit.
P3.1.2.9 U/f ratio selection 0 1 Varies 108
Type of U/f curve between
zero frequency and the field
weakening point.
0 = Linear
1 = Squared
P3.1.2.15 Over-voltage controller 0 1 1 607
0 = Disabled
1 = Enabled
P3.1.2.16
Under-voltage control-
ler
0 1 1 608
0 = Disabled
1 = Enabled
P3.1.2.17 StatorVoltAdjust 50.0% 150.0% 100.0 659
Parameter for adjusting sta-
tor voltage in permanent
magnet motors.
P3.1.2.18 Energy optimization 0 1 0 666
The drive searches for the
minimum motor current in
order to save energy and to
lower the motor noise. This
function can be used for
example in fan and pump
applications
0 = Disabled
1 = Enabled
P3.1.2.19 Flying Start Options 0 1 0 1590
0 = Shaft direction is
searched in both
directions.
1 = Shaft direction is only
searched in the same
direction as the frequency
reference
Table 25: Advanced motor settings.
Code Parameter Min Max Unit Default ID Description