P154 Set Armature Current Controller I Component To Zero; P156 Armature Current Controller Reset Time; P159 Switchover Threshold For Auto-Reversing Stage (Armature); P162 Emf Calculation Method For Armature Precontrol - Siemens 6RA70 Series Instructions Manual

PNU Description
P154 Set armature current controller I component to zero
*
0 Set controller I component to zero (i.e. to obtain pure P
FDS
controller)
(G162)
1 Controller I component is active
P155 Armature current controller P gain
Proportional gain of armature current controller
FDS
This parameter is automatically set during the optimization run for precontrol
and current controller (armature and field) (P051=25).
(G162)
See also parameter P175
P156 Armature current controller reset time
This parameter is automatically set during the optimization run for precontrol
FDS
and current controller (armature and field) (P051=25).
(G162)
See also parameter P176
P157 Control word for current setpoint integrator
*
0 Reduced gearbox stressing
FDS
The integrator is active only after a change in torque direction
(acts as ramp-function generator for armature current setpoint
(G162)
only until the output reaches the setpoint at the integrator input
for the 1
1 Current setpoint integrator
The integrator is always active (acts as ramp-function generator
for the armature current setpoint)
P158 Ramp-up time for current setpoint integrator (reduced gearbox
stressing)
FDS
Period of an acceleration ramp with a setpoint step change from 0% to
100% at r072.002.
(G162)
For older DC machines (i.e. unsuitable for steep rates of current rise),
P157=1 and P158=0.040 must be set.
P159 Switchover threshold for auto-reversing stage (armature)
FDS
(G163)
P160 Additional torque-free interval
Additional torque-free interval for torque direction change in 4Q operation.
FDS
It is particularly important to set this parameter to values of > 0 for converter
(G163) armatures which supply large inductances (e.g. lifting solenoids).
P161 Additional Alpha W pulses with disabled second pulses
Number of additional Alpha W pulses with disabled second pulses after
FDS
detection of I=0 message prior to a change in torque direction.
(G163) It is particularly important to set this parameter to values of > 0 for converter
armatures which supply large inductances (e.g. lifting solenoids).
These pulses cause the current to decay prior to a change in torque
direction. When it drops below the thyristor holding current value, the
current is suddenly chopped by the unfired second thyristor and the residual
energy stored in the load inductor must be dissipated via a suppressor
circuit (e.g. a varistor) to prevent the load inductor from producing a surge
voltage. See also P179.
P162 EMF calculation method for armature precontrol
*
0 The EMF derived from the measured armature voltage is
FDS
applied
1 The EMF derived from the calculated armature voltage is
(G162)
applied
(the purpose of this setting is to prevent the occurrence of any
low-frequency (< 15 Hz) armature current fluctuations)
SIEMENS Energy & Automation
SIMOREG DC Master Base Drive Panel Operating Instructions
st
time after a change in torque direction).
requested torque direction
0.05%
I
0
Speed controller output
II
P159
Value range No. indices
[Unit] Factory
Steps setting
Type
0 to 1 Ind: 4
1 FS=1
Type: O2
0.01 to 200.00 Ind: 4
0.01 FS=0.10
Type: O2
0.001 to 10.000 Ind: 4
[s] FS=0,200
0.001s Type: O2
0 to 1 Ind: 4
1 FS=0
Type: O2
0.000 to 1.000 Ind: 4
[s] FS=0.000
0.001s Type: O2
0.00 to 100.00 Ind: 4
[%] FS=0.01
0.01% of n controller Type: O2
output
0.000 to 2.000 Ind: 4
[s] FS=0.000
0.001s Type: O2
0 to 100 Ind: 4
1 FS=0
Type: O2
0 to 1 Ind: 4
1 FS=1
Type: O2
See
Change
(Access /
Status)
P052 = 3
P051 = 40
Offline
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Offline
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Offline
10-31