Siemens G85139 Benutzerhandbuch
5. SYSTEM PARAMETERS
English
Parameter
Function
Range
[Default]
Description / Notes
© Siemens plc 1997
G85139-H1750-U049-B
23
26/09/97
P011
Frequency setpoint memory
0 - 1
[0]
0 = Disabled
1 = Enabled after switch-off. i.e. The setpoint alterations made with
the
∆
/
∇
buttons or digital inputs are stored even when power
has been removed from the inverter.
P012
•
Minimum motor frequency (Hz)
0 - 400.00
[0.00]
Sets the minimum motor frequency (must be less than the value of
P013).
P013).
P013
•
Maximum motor frequency (Hz)
0 - 400.00
[50.00]
Sets the maximum motor frequency.
P014
•
Skip frequency 1 (Hz)
0 - 400.00
[0.00]
A skip frequency can be set with this parameter to avoid the effects of
mechanical resonance. Frequencies within +/-(value of P019) of this
setting are suppressed. Stationary operation is not possible within the
suppressed frequency range - the range is just passed through.
mechanical resonance. Frequencies within +/-(value of P019) of this
setting are suppressed. Stationary operation is not possible within the
suppressed frequency range - the range is just passed through.
P015
•
Automatic restart after mains
failure.
failure.
0 - 1
[0]
Setting this parameter to ‘1’ enables the inverter to restart automatically
after a mains break or ‘brownout’, provided the run/stop switch is still
closed, P007 = 0 and P910 = 0, 2 or 4.
after a mains break or ‘brownout’, provided the run/stop switch is still
closed, P007 = 0 and P910 = 0, 2 or 4.
0 = Disabled
1 = Automatic restart
1 = Automatic restart
P016
•
Start on the fly
0 - 2
[0]
Allows the inverter to start onto a spinning motor.
Under normal circumstances the inverter runs the motor up from 0 Hz.
However, if the motor is still spinning or is being driven by the load, it will
undergo braking before running back up to the setpoint - this can cause an
overcurrent trip. By using a flying restart, the inverter ‘homes in’ on the
motor's speed and runs it up from that speed to the setpoint. Note: If the
motor has stopped or is rotating slowly, some ‘rocking’ may occur as the
inverter senses the direction of rotation prior to restarting. (See also P020)
However, if the motor is still spinning or is being driven by the load, it will
undergo braking before running back up to the setpoint - this can cause an
overcurrent trip. By using a flying restart, the inverter ‘homes in’ on the
motor's speed and runs it up from that speed to the setpoint. Note: If the
motor has stopped or is rotating slowly, some ‘rocking’ may occur as the
inverter senses the direction of rotation prior to restarting. (See also P020)
0 = Normal restart
1 = Flying restart after power up, fault or OFF2 ( if P018 = 1).
2 = Flying restart every time (useful in circumstances where the
motor can be driven by the load).
P017
•
Smoothing type
1 - 2
[1]
1 = Continuous smoothing (as defined by P004).
2 = Discontinuous smoothing. This provides a fast unsmoothed
2 = Discontinuous smoothing. This provides a fast unsmoothed
response to STOP commands and requests to reduce frequency.
Note:
P004 must be set to a value > 0.0 for this parameter to have
any effect.
any effect.
P018
•
Automatic restart after fault
0 - 1
[0]
Automatic restart after fault:
0 = Disabled
1 = The inverter will attempt to restart up to 5 times after a fault. If
1 = The inverter will attempt to restart up to 5 times after a fault. If
the fault is not cleared after the 5th attempt, the inverter will
remain in the fault state until reset.
remain in the fault state until reset.
WARNING:
While waiting to re-start, the display will flash. This
means that a start is pending and may happen at
any time. Fault codes can be observed in P930.
any time. Fault codes can be observed in P930.
P019
•
Skip frequency bandwidth (Hz)
0 - 10.00
[2.00]
Frequencies set by P014, P027, P028 or P029 that are within +/- the
value of P019 are suppressed.
value of P019 are suppressed.
P020
Flying start ramp time (seconds)
0.50 - 25.0
[5.0]
Used in conjunction with P016 (set longer times if persistent F002 trips
occur).
occur).
P021
•
Minimum analogue frequency (Hz)
0 - 400.00
[0.00]
Frequency corresponding to the lowest analogue input value, i.e.
0 V or 2 V. This can be set to a higher value than P022 to give an
inverse relationship between analogue input and frequency output (see
diagram in P022).
0 V or 2 V. This can be set to a higher value than P022 to give an
inverse relationship between analogue input and frequency output (see
diagram in P022).