Siemens SINAMICS V20 - Page 308

Parameter list
8.2 Parameter list
SINAMICS V20 Converter
306 Operating Instructions, 10/2019, A5E34559884-012
Parameter
Function
Range
Factory
default
Can be
changed
Scaling
Data
set
Data
type
Acc.
Level
P2366[0...2]
Delay before stopping
motor [s]
0 - 254 5 U, T - DDS U16 3
With hibernation enabled. If the frequency demand drops below the threshold there is a delay of P2366
seconds before the converter is stopped.
P2367[0...2]
Delay before starting
motor [s]
0 - 254 2 U, T - DDS U16 3
With hibernation enabled. If pulses have been disabled by the unit going into hibernation, and the fre-
quency demand has increased to above the hibernation threshold, there will be a delay of P2367 seconds
before the converter restarts.
P2370[0...2]
Motor staging stop mode
0 - 1
0
T
-
DDS
U16
3
Selects stop mode for external motors when motor staging is in use.
0
Normal stop
1
Sequence stop
P2371[0...2]
Motor staging configuration
0 - 3
0
T
-
DDS
U16
3
Selects configuration of external motors (M1, M2) used for motor staging feature.
0
Motor staging disabled
1
M1 = 1 x MV, M2 = Not fitted
2
M1 = 1 x MV, M2 = 1 x MV
3
M1 = 1 x MV, M2 = 2 x MV
Caution:
For this kind of motor application it is mandatory to disable negative frequency setpoint!
Note:
Motor staging allows the control of up to 2 additional staged pumps or fans, based on a PID control sys-
tem.
The complete system consists of one pump controlled by the converter with up to 2 further pumps/fans
controlled from contactors or motor starters.
The contactors or motor starter are controlled by outputs from the converter.
The diagram below shows a typical pumping system.
A similar system could be set up using fans and air ducts, instead of pumps and pipes.