Siemens 411 用户手册
Issue 03/01
10 Engineering Information
MICROMASTER 411 & COMBIMASTER 411 Operating Instructions
6SE6400-5CA00-0BP0
131
10.2.6.2 Energy
Saving
Mode 2 (P2393 - P2398)
Using the energy saving functionality, the control loop behavior is controlled so that
the inverter recognizes that the load is reduced. In this case, the inverter will be
shutdown if the actual value lies above the threshold px, which is defined by
parameter P2393 and the setpoint p*.
the inverter recognizes that the load is reduced. In this case, the inverter will be
shutdown if the actual value lies above the threshold px, which is defined by
parameter P2393 and the setpoint p*.
*
p
2393
P
p
x
⋅
=
When the load decreases, this is recognized by the active current r0086, which is
fed via the BICO-Parameter P2396 to a normalized characteristic.
fed via the BICO-Parameter P2396 to a normalized characteristic.
PID
−
f
P2273
(
∆
PID
)
Pressure
equalizing
reservoir
f(t)
Pressure
sensor
PID
SET
PID
limit
Motor
Motor
control
Load
PID
RFG
p*
1
0
p*
m
1
u
0
u
1
u
2
u
max
0
p
x
= P2393 p*
x(t)
r2398
u(t)
v(t)
P2397
P2394
P2395
P2393
r0086
P2396
PID
ACT
limit
PID
ACT
1
P
x
0
P*
normalized via P2002
t
p*
t
0
1
x(t)
p(t)
u_act
p
x
t
u
2
r2398
u
1
u
0
p_act
f_act
t
f(t)
p*
m
p*
P2395
P2396
Load f(t)
(e.g. valve)
Figure 10-12 Energy Saving Mode 2