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5. SYSTEM PARAMETERS
Parameter Function
Range
[Default]
Description / Notes
G85139-H1750-U049-C1
© Siemens plc 1999
19/08/99
28
P022
••••
Maximum analogue frequency
(Hz)
0 - 400.00
[50.00]
Frequency corresponding to the highest analogue input value, i.e.
10 V, determined by P023. This can be set to a lower value than P021
to give an inverse relationship between analogue input and frequency
output.
i.e.
Note:
The output frequency is limited by values entered for
P012/P013.
P023
••••
Analogue input function
0 - 2
[0]
0
= 0 V to 10 V
1
= 2 V to 10 V
2
= 2 V* to 10 V
* The inverter will come to a controlled stop if V < 1 V.
WARNING: With P023=2, the inverter will automatically start
when V goes above 1 V. This equally applies to
analogue and digital control (i.e. P006 = 0 or 1).
P024
••••
Analogue setpoint addition
0 - 2
[0]
If the inverter is not in analogue mode (P006 = 0 or 2), setting this
parameter to ‘1’ causes the analogue input value to be added.
0
= No addition.
1
= Addition of the analogue setpoint (defined by P023) to the
fixed frequency or the motor potentiometer frequency.
2
= Scaling of digital/fixed setpoint by analogue input (P023) in
the range 0 - 100%.
Note:
By selecting a combination of reversed negative fixed
frequency settings and analogue setpoint addition, it is
possible to configure the inverter for ‘centre zero’ operation
with a +/-5 V supply or a 0 - 10 V potentiometer so that the
output frequency can be 0 Hz at any position, including the
centre position.
P027
••••
Skip frequency 2 (Hz)
0 - 400.00
[0.00]
See P014.
P028
••••
Skip frequency 3 (Hz)
0 - 400.00
[0.00]
See P014.
P029
••••
Skip frequency 4 (Hz)
0 - 400.00
[0.00]
See P014.
P031
••••
Jog frequency right (Hz)
0 - 400.00
[5.00]
Jogging is used to advance the motor by small amounts. It is controlled
via the JOG button or with a non-latching switch on one of the digital
inputs (P051 to P053).
If jog right is enabled for one if these digital inputs (e.g. P051-53 = 7), or if
the jog button is pressed, this parameter controls the frequency at
which the inverter will run when the switch is closed. Unlike other
setpoints, it can be set lower than the minimum frequency.
P032
••••
Jog frequency left (Hz)
0 - 400.00
[5.00]
If jog left is enabled (e.g. P051-53 = 8), this parameter controls the
frequency at which the inverter will run when the switch is closed.
Unlike other setpoints, it can be set lower than the minimum frequency.
f
V
P021
P021
P022
P022
