Siemens SIMOTRAS 6SG7050 Operating Instructions Manual page 479

01.04
PNU Description
U640 Wait period when switching rotor contactors
(2640)
i 001: Pick-up time of rotor contactors
i 002: Drop-out time of rotor contactors
i 003: Pick-up time of rotor contactors
(see header for parameter U641 ff.)
Off-load switching is recommended to increase the service life of the rotor
contactors.
A disadvantage of off-load switching of rotor contactors: there is a torque-
free interval, and this may lead to a deviation in the speed.
Whenever a rotor contactor is switched in, the firing pulses are disabled for
the time set at index 001 (zero current interval).
Whenever a rotor contactor is switched out, the firing pulses are disabled
for the time set at index 002 (zero current interval).
Preventing current peaks during rotor stage stepping:
To prevent excessive stator current values occurring when switching in the next rotor contactor, it is desirable, at the same time as the
contactor is switched in (delayed by the time set at U640 index 003), to reduce the I component of the speed controller by roughly the
same proportion by which the rotor resistance is also reduced.
U641 Factor for I component n controller with rotor stage 1
(2641)
R (stage 1) / R (counter-torque stage)
FDS
U642 Factor for I component n controller with rotor stage 2
(2642)
R (stage 2) / R (stage 1)
FDS
U643 Factor for I component n controller with rotor stage 3
(2643)
R (stage 3) / R (stage 2)
FDS
U644 Factor for I component n controller with rotor stage 4
(2644)
R (stage 4) / R (stage 4)
FDS
U645 Factor for P component n controller with counter-torque operation
(2645)
effective P gain for speed controller with counter-torque operation = P225 *
FDS
U645
(G151)
U646 Factor for P component n controller with rotor stage 1
(2646)
effective P gain for speed controller with rotor stage 1 = P225 * U646
FDS
(G151)
U647 Factor for P component n controller with rotor stage 2
(2647)
effective P gain for speed controller with rotor stage 2 = P225 * U647
FDS
(G151)
U648 Factor for P component n controller with rotor stage 3
(2648)
effective P gain for speed controller with rotor stage 3 = P225 * U648
FDS
(G151)
U649 Factor for P component n controller with rotor stage 4
(2649)
effective P gain for speed controller with rotor stage 4 = P225 * U649
FDS
(G151)
11.73 Start pulse, speed controller
(see also Section 8, Sheet G150)
U651 Start pulse (integrator setting value for the speed controller)
(2651)
FDS
(G150)
U652 Multiplier for start pulse when lowering
(2652)
when start pulse as in U651 is also used for a positive setpoint (lowering)
FDS
(G150)
SIEMENS AG 6SG7000-0BA76
SIMOTRAS HD Operating Instructions
Value range No. indices
[Unit]
0 to 2000 Ind: 3
[ms] FS=
1ms i001: 0
i002: 0
i003: 50
Type: O2
0.0 to 100.0 Ind: 4
[%] FS=50.0
0.1% Type: O2
0.0 to 100.0 Ind: 4
[%] FS=50.0
0.1% Type: O2
0.0 to 100.0 Ind: 4
[%] FS=50.0
0.1% Type: O2
0.0 to 100.0 Ind: 4
[%] FS=50.0
0.1% Type: O2
1 to 1000 Ind: 4
[%] FS=100
1% Type: O2
1 to 1000 Ind: 4
[%] FS=100
1% Type: O2
1 to 1000 Ind: 4
[%] FS=100
1% Type: O2
1 to 1000 Ind: 4
[%] FS=100
1% Type: O2
1 to 1000 Ind: 4
[%] FS=100
1% Type: O2
-100.00 to 100.00 Ind: 4
[%] FS=0.00
0.01% Type: I2
0.00 to 100.00 Ind: 4
[%] FS=50.00
0.01% Type: O2
Parameter list
See
Change
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
11-131