Siemens 6RA7086-6KS22 Operating Instructions Manual page 480

Parameter list
PNU Description
r074 Converter rated supply voltage (field)
Converter rated supply voltage (field) as specified on rating plate
(G101)
P075 Control word for power section
*
Selection of operating characteristics of thermal monitor (I
power section (see also Section 9.16 "Dynamic overload capability of power
(G101)
section").
(G161)
The "Dynamic overload capability of the power module" allows the
SIMOREG DC Master to operate for short periods on armature currents that
are higher than the converter rated DC current specified on the rating plate
(=r072.001).
The permissible overload period is determined solely by the power module
and the preceding operating history.
The "thermal power module monitoring" function does not monitor operation
in compliance with the load class criteria set in parameter P067. If permitted
by the power module, the unit can operate for overload periods in excess of
those defined by the load class.
0 Dynamic overload capability is not permitted
The armature current is limited to P077 * r072.001.
1 Dynamic overload capability is permitted, alarm A039
The armature current is limited to P077 * 1.8 * r072.001 as long
as the calculated thyristor temperature does not exceed the
permitted value.
If the temperature exceeds the permitted value, the SIMOREG
DC Master protects itself by reducing the current limit to P077 *
r072.001. Alarm A039 is output at the same time.
The armature current setpoint limit is not increased to P077 *
1.8 * r072.001 (alarm A039 also disappears) until the calculated
thyristor temperature has dropped below the limit value again
and the armature current setpoint is lower than the converter
rated DC current (r072.001).
2 Dynamic overload capability is permitted, fault F039
The armature current is limited to P077 * 1.8 * r072.001 as long
as the calculated thyristor temperature does not exceed the
permitted value.
Fault message F039 is output if the permissible temperature
limit is exceeded.
P076 Reduction of converter rated DC current
*
i001: Reduction of converter rated DC current (armature)
i002: Reduction of converter rated DC current (field)
(G101)
For the purpose of achieving a close match between the converter and
motor, the converter rated DC current is reduced to the value entered here.
The current value of the device rated DC is indicated in parameter r072.002.
The following values can be set:
10.0%, 20.0%, 33.3%, 40.0%, 50.0%, 60.0%, 66.6% 70.0%, 80.0%, 90.0%
and 100.0%
Note:
If a load class is selected in parameter P067 which causes a reduction in
the converter rated DC current, then the lower of the two parameter setting
values is effective.
11-16
Value range
[Unit]
Steps
10 to 460
[V]
1V
0 to 2
1
2
t monitoring) of
see column on left
SIMOREG DC Master
05.05
No. indices See
Factory Change
setting (Access /
Type Status)
Ind: None P052 = 3
Type: O2
Ind: None P052 = 3
FS=1 P051 = 40
Type: O2 off-line
Ind: 2 P052 = 3
FS=100.0 P051 = 40
Type: O2 Offline
SIEMENS AG 6RX1700-0AD76
Operating Instructions