Siemens SED2 series Operating Instructions Manual page 95
Variable speed drives
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Details:
Displays actual compensated motor slip as [%
Dependency:
Slip compensation (P1335) active.
P1499
Scaling acceleration torque control
Enters scaling of acceleration in [%] for sensorless torque control (SLVC) at low frequencies.
Unit: %
Min: 0.0
Details:
Enters scaling of acceleration in [%] for sensorless torque control (SLVC) at low frequencies.
P1800
Pulse frequency
Sets pulse frequency of power switches in the variable speed drive. The frequency can be
changed in steps of 2 kHz.
Pulse frequencies > 4 kHz selected on 380-480 V units reduce the maximum continuous motor
current.
Unit: kHz
Min: 2
Details:
Sets pulse frequency of power switches in variable speed drive. The frequency can be changed in steps of 2 kHz.
Pulse frequencies > 4 kHz selected on 380-480 V units reduce the maximum continuous motor current.
Dependency:
Minimum pulse frequency depends on P1082 (maximum frequency) and P0310 (rated motor frequency).
Note:
At 4 kHz, full output current is obtained up to 50 degrees C (CT mode);over 50 degrees C, full output may be obtained at
8 kHz.
If silent operation is not absolutely necessary, lower pulse frequencies may be selected to reduce variable speed drive
losses and radio-frequency emissions.
Under certain circumstances, the variable speed drive may reduce the switching frequency to provide protection against
over-temperature (see P0290, Level 3).
r1801
CO: Act. switching frequency
Actual pulse frequency of power switches in variable speed drive.
Unit: kHz
Min: -
Note:
Actual pulse frequency of power switches in variable speed drive. Under certain conditions (variable speed drive
overtemperature, see P0290), this can differ from the values selected in P1800 (pulse frequency).
P1820
Reverse output phase sequence
Changes direction of motor rotation without changing setpoint polarity.
Unit: -
Min: 0
Settings:
0=OFF
1=ON
Dependency:
If positive and negative revolution is enabled, frequency setpoint is directly used.
If both positive and negative revolution are disabled, reference value is set to zero.
Details:
See P1000 (select frequency setpoint).
P1910
Select motor data identification
Performs stator resistance measuring.
Unit: -
Min: 0
Settings:
0=Disabled
1=Identification of all parameters with parameter change
Dependency:
N o measurement if motor data incorrect.
P1910=1 : Calculated value for stator resistance (see P0350) is overwritten.
P1910=2 : Values already calculated are not overwritten.
Note:
Before selecting motor data identification, "Quick commissioning" has to be performed in advance.
Once enabled (P1910=1), A0541 generates a warning that the next ON command will initiate measurement of motor
parameters.
When choosing the setting for measurement, observe the following:
1.
"With parameter change" means that the value is actually adopted as P0350 parameter setting and applied to the
control as well as being shown in the read-only parameters below.
2.
"Without parameter change" means that the value is only displayed, i.e. shown for checking purposes in the read-
only parameter r1912 (identified stator resistance). The value is not applied to the control.
r1912[3]
Identified stator resistance
Displays measured stator resistance value (line-to-line) in [ohm].
Unit: Ohm
Min: -
Index:
r1912[0] : U_phase
Note:
This value is measured using P1910=1 or 2 , i.e., identification of all parameters with/without change.
P2000
Reference frequency
Full-scale frequency setting used by serial link (corresponds to 4000H), analog I/O and P/D
controller.
Unit: Hz
Min: 1.00
P2001
Reference voltage
Full-scale output voltage (i.e. 100 % ) used over serial link (corresponds to 4000H).
Unit: V
Min: 10
Example:
P0201=230 specifies that 4000H received via USS denotes 230 V.
P2002
Reference current
Full-scale output current used over serial link (corresponds to 4000H).
Unit: A Min: 0.10
r2004
Reference power
Full-scale reference power used over the serial link (corresponds to 4000H).
Unit: -
Min: -
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HVAC Products
Def: 100.0
Def: 4
Def: -
Def: 0
Def: 0
Def: -
r1912[1] : V_phase
Def: 50.00
Def: 1000
Def: 0.10
Def: -
SED2 variable speed drives
Programming
Max: 400.0
Max: 16
Max: -
Max: 1
Max: 20
2=Identification of all parameters without parameter change
20=Set voltage vector
Max: -
r1912[2] : W_phase
Max: 650.00
Max: 2000
Max: 10000.00
Max: -
Level 3
Level 2
Level 3
Level 3
Level 3
Level 3
Level 2
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Level 3
Level 3
95/126
CM1U5192en
01.2002
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