Siemens MICROMASTER Vector User Manual

English 6. SYSTEM PARAMETERS
Parameter Function Range
[Default]
Description / Notes
G85139-H1751-U529-D1 © Siemens plc 199
9
4/8/99
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P077
Control mode 0 - 3
(1)
Controls the relationship between the speed of the motor and the voltage
supplied by the inverter. One of four modes can be selected:
0 = V/f curve
1 = FCC control
2 = Quadratic V/f
3 = Vector Control
Note: When Sensorless Vector Control is selected (P077 = 3), P088 will
automatically be set to 1, so that on first run-up, the inverter will
measure the stator resistance of the motor and calculate motor
constants from the rating plate data in P080 to P085.
P078 ·
Continuous boost (%)
MMV
MDV (P077=3)
MDV (P077=0, 1 or 2)
0 - 250
[100]
[100]
[50]
For many applications it is necessary to increase low frequency torque. This
parameter sets the start-up current at 0 Hz to adjust the available torque for low
frequency operation. 100% setting will produce rated motor current (P083) at
low frequencies.
WARNING: If P078 is set too high, overheating of the motor and/or
an overcurrent trip (F002) can occur.
P079 ·
Starting boost (%) 0 - 250
[0]
For drives which require a high initial starting torque, it is possible to set an
additional current (added to the setting in P078) during ramp duration (P002).
This is only effective during initial start up and until the frequency setpoint is
reached.
WARNING: This increase is in addition to P078, but the total is
limited to 250%.
P080
Nominal rating plate motor power
factor (cosj)
0.00-1.00
[¶¶¶]
If efficiency is shown on the motor rating plate, calculate the power factor as
follows: pf =
If neither power factor nor efficiency are shown on the motor rating plate - set
P080 = 0.
P081
Nominal rating plate frequency for
motor (Hz)
0 - 650.00
[50.00]
P082
Nominal rating plate speed for motor
(RPM)
0 - 9999
[¶¶¶]
Notes:
1 These parameters P080 to P085 must be set for the particular motor used.
Read the figures from the motor rating plate (see Figure 4.2..1 ).
P083
Nominal rating plate current for motor
(A)
0.1-300.0
[¶¶¶]
2 It will be necessary to perform an automatic calibration (P088 = 1) if P080 to
P085 are changed from their factory default settings.
P084
Nominal rating plate voltage for motor
(V)
0 - 1000
[¶¶¶]
3 When the inverter is set-up for North American operation (P101=1); P081 will
default to 60Hz and P085 will indicate hp (0.16 - 250)
P085
Nominal rating plate power for motor
(kW)
0.12-250.00
[¶¶¶]
P086 ·
Motor current limit (%) 0 - 250
[150]
Defines the motor overload current as a % of the Nominal motor current (P083)
allowed for up to one minute.
With this parameter and P186, the motor current can be limited and
overheating of the motor prevented. If the value set in P083 is exceeded for
one minute, (or longer if the overload is small) , the output frequency is reduced
until the current falls to that set in P083. The inverter display flashes as a
warning indication but the inverter does not trip. The inverter can be made to
trip using P074.
Note: The maximum value that P086 can be set to is automatically limited by
the rating of the inverter. Further, the power can be automatically
reduced for pulse frequencies which differ from the factory setting
(refer to P076)
P087 ·
Motor PTC enable 0 - 1
[0]
0 = Disabled
1 = External PTC enabled
Note: If motor thermal protection is required, then an external PTC must
be used and P087 = 1. If P087 = 1 and the PTC input goes high
then the inverter will trip (fault code F004 displayed).
h
p
x 746
1.732 x efficienc
y
x nom. volts x nom. am
p
s

Siemens MICROMASTER Vector Specifications

General

Brand	Siemens
Model	MICROMASTER Vector
Category	Media Converter
Language	English