Siemens MICROMASTER 420 - Page 88

International English 5. SYSTEM PARAMETERS
88 MICROMASTER 420 Operating Instructions
6SE6400-5AA00-0BP0
Parameter
Number
Parameter Name
Min
Max
[Default]
Units
♦
♦♦
♦P0003 User
Access Level
♦
♦♦
♦P0004 Setting
♦
♦♦
♦Changeable
♦
♦♦
♦Status
P2258 Ramp-down time for PI setpoint
Sets the ramp-down time for the PI setpoint.
Setpoint (%)
0
time (s)
Ramp - down time
(P1121)
100 %
Setting the ramp down time too short can cause the inverter to trip on (overvoltage
(F0002)/overcurrent (F0001))
Note
If PI control is enabled, the normal ramp-down time (P1121) is disabled.
The PI setpoint ramp is only enabled effective on PI setpoint changes. The ramp times
used after OFF1 & OFF3 are defined in P1121 and P1135 respectively
0
650
[1]
s
2
22
‘•’
CO: PI setpointr2260
Displays the total active PI setpoint in %.
-
-
[-]
%
2
22
CI: Source of PI feedbackP2264
Selects the source of the PI feedback signal. The most common settings are as follows:
755 = Analog input 1
Note 1
When the analog input is selected, it is possible to implement offset and gain using
parameters P756 – P760.
Note 2
Refer to “Using BICO” description for further details of other settings.
0
2294.0
[755]
-
2
22
‘•’
PI: feedback filter timeconst.P2265
Defines PI feedback filter time constant.
0
60
[0]
s
2
22
‘•’
CO: PI feedbackr2266
Displays PI feedback signal
-
-
[-]
%
2
22