6. SYSTEM PARAMETERS
English
Parameter Function
Range
[Default]
Description / Notes
© Siemens plc 1999
G85139-H1751-U529-D1
57
4/8/99
P088
Automatic calibration
0 - 1
[0]
The motor stator resistance is used in the inverter's internal current monitoring
calculations. When P088 is set to ‘1’ and the RUN button is pressed, the
inverter performs an automatic measurement of motor stator resistance; stores
it in P089 and then resets P088 to ‘0’.
If the measured resistance is too high for the size of inverter (e.g. motor not
connected or unusually small motor connected), the inverter will trip (fault code
F188) and will leave P088 set to ‘1’. If this happens, set P089 manually and
then set P088 to ‘0’.
P089
·
Stator resistance (
W
)
0.01-199.99
[
¶¶¶
]
Can be used instead of P088 to set the motor stator resistance manually. The
value entered should be the resistance measured across any two motor
phases.
WARNING:
The measurement should be made at the inverter
terminals with power off and cold motor.
Note:
If the value of P089 is too high then an overcurrent trip(F002) may
occur.
P091
·
Serial link slave address
0 - 30
[0]
Up to 31 inverters can be connected via the serial link and controlled by a
computer or PLC using the USS serial bus protocol. This parameter sets a
unique address for the inverter.
P092
·
Serial link baud rate
3 - 7
[6]
Sets the baud rate of the RS485 serial interface (USS protocol):
3
= 1200 baud
4
=
2400 baud
5
= 4800 baud
6
= 9600 baud
7
= 19200 baud
Note:
Some RS232 to RS485 converters are not capable of baud rates
higher than 4800.
P093
·
Serial line time-out (seconds)
0 - 240.
[0]
This is the maximum permissible period between two incoming data telegrams.
This feature is used to turn off the inverter in the event of a communications
failure.
Timing starts after a valid data telegram has been received and if a further data
telegram is not received within the specified time period, the inverter will trip
and display fault code F008.
Setting the value to zero switches off the control.
P094
·
Serial link nominal system setpoint
(Hz)
0 - 650.00
[50.00]
Setpoints are transmitted to the inverter via the serial link as percentages. The
value entered in this parameter represents 100%
(HSW = 4000H).
P095
·
USS compatibility
0 - 2
[0]
0
=
Compatible with 0.1 Hz resolution
1
=
Enable 0.01 Hz resolution
2
=
HSW is not scaled but represents the actual frequency value to a
resolution of 0.01 Hz (e.g. 5000 = 50 Hz).
P099
·
Option module type
0 - 2
[0]
0
=
Option module not present
1
=
PROFIBUS module (enables parameters relating to PROFIBUS)
2
=
CANbus module (enables parameters relating to CANbus)
P101
·
Operation for Europe or North
America
0 - 1
[0]
This sets the inverter for European or North America supply and nominal rating
plate frequency for the motor to:
0
= Europe (50 Hz and power ratings to kW)
1
= North America (60 Hz and power ratings to hp)
Note:
After setting P101 =1 the inverter must be re-set to factorydefaults, i.e.
P944 = 1 to automatically set P013 = 60Hz, P081= 60Hz, P082 = 1680rpm
P085 will be displayed in hp.
P111
Inverter power rating (kW/hp)
0.12- 75.00
[
¶¶¶
]
Read-only parameter that indicates the power rating of the inverter in kW. e.g.
0.55 = 550 W
Note:
If P101 = 1 then the rating is displayed in hp.