Siemens SINAMICS V20 Series - Page 210

Parameter list
7.2 Parameter list
SINAMICS V20 Inverter
210 Operating Instructions, 07/2012, A5E03728167
Parameter Function Range Factory
default
Can be
changed
Scaling Data
set
Data
type
Acc.
Level
P2372[0...2] Motor staging cycling 0 - 1 0 T - DDS U16 3
Enables motor cycling for the motor staging feature.
When enabled, the motor selected for staging / destaging is based on the hours run counter P2380. When
staging, the motor with the least hours is switched on. When destaging, the motor with most hours is
switched off.
If staged motors are different sizes the choice of motor is first based on required motor size, and then if
there is still a choice, on hours run.
0 Disabled
1 Enabled
P2373[0...2] Motor staging hysteresis
[%]
0.0 - 200.0 20.0 U, T PERCEN
T
DDS Float 3
P2373 as a percentage of PID setpoint that PID error P2273 must be exceeded before staging delay
starts.
Note: The value of this parameter must always be smaller than delay override lockout timer P2377.
P2374[0...2] Motor staging delay [s] 0 - 650 30 U, T - DDS U16 3
Time that PID error P2273 must exceed motor staging hysteresis P2373 before staging occurs.
P2375[0...2] Motor destaging delay [s] 0 - 650 30 U, T - DDS U16 3
Time that PID error P2273 must exceed motor staging hysteresis P2373 before destaging occurs.
P2376[0...2] Motor staging delay
override [%]
0.0 - 200.0 25.0 U, T PERCEN
T
DDS Float 3
P2376 as a percentage of PID setpoint. When the PID error P2273 exceeds this value, a motor is staged /
destaged irrespective of the delay timers.
Note: The value of this parameter must always be larger than staging hysteresis P2373.
P2377[0...2] Motor staging lockout
timer [s]
0 - 650 30 U, T - DDS U16 3
Time for which delay override is prevented after a motor has been staged or destaged.
This prevents a second staging event immediately after a first, being caused by the transient conditions
after the first staging event.
P2378[0...2]
Motor staging frequency
f_st [%]
0.0 - 120.0 50.0 U, T PERCEN
T
DDS Float 3
The frequency as a percentage of maximum frequency. During a (de) staging event, as the inverter ramps
from maximum to minimum frequency (or vice versa) this is the frequency at which the digital output (DO)
is switched.