02.00 Parameter list
SIEMENS AG 6RX1700-0AD76 11-15
SIMOREG DC Master Operating Instructions
PNU Description Value range
[Unit]
Steps
No. indices
Factory
setting
Type
See
Change
(Access /
Status)
P077 Total thermal reduction factor
The factor set in this parameter effects a reduction in the armature current
limit (as defined by the setting in P075).
The converter must be derated in the following instances:
– Operation at high ambient temperatures:
If the ambient temperature is higher than 45°C (on naturally air-cooled
converters) or 35°C (on converters with forced air-cooling), the possible
load capability of the converter decreases as a consequence of the
maximum permissible thyristor junction temperature by percentage
reduction "a" as specified in the table in Section 3.4, resulting in a
temperature reduction factor of
k
temp
= (100 - a) / 100
– Installation altitudes of over 1000m above sea level:
In this case, the lower air density and thus less effective cooling reduce
the possible load capability of the converter to the percentage load "b1"
specified in the table in Section 3.4, resulting in an installation altitude
reduction factor of
k
altitude
= b1 / 100
P077 must be set as follows: P077 = k
temp
* k
altitude
Note:
A general reduction in the converter rated DC current (through appropriate
setting of parameter P076.001) can be included in this calculation.
0.50 to 1.00
0.01
Ind: None
FS=1.00
Type: O2
P052 = 3
P051 = 40
Offline
P078 Reduction of converter rated supply voltage
i001: Rated input voltage armature
i002: Rated input voltage field
The rated voltage value of the power system actually used to supply the
power section must be set in this parameter.
This setting acts as the reference for the undervoltage, overvoltage and
phase failure monitoring functions (see also P351, P352 and P353) as well
as for connectors K0285 to K0289, K0291, K0292, K0301 K0302, K0303
and K0305
NOTE
If a SIMOREG converter is operated at a rated input voltage that is
lower than its rated supply voltage, then the rated DC voltage specified
in the technical data (Section 3.4) cannot be reached !
10 to r071
[V]
1V
Ind: 2
FS=r071
Type: O2
P052 = 3
P051 = 40
Offline
P079
*
Short pulses / long pulses, armature gating unit
0 Short pulses (0.89 ms=approx. 16 degrees at 50 Hz) are output
on the armature gating unit.
1 Long pulses (pulse duration up to approx. 0.1 ms before next
pulse) are output on the armature gating unit (e.g. required in
cases where field is supplied via armature terminals).
0 to 1
1
Ind: None
FS=0
Type: O2
P052 = 3
P051 = 40
Offline
11.6 Setting values for converter control
P080
*
Control word for brake control
1 The brake is a holding brake
(When the "Operating enable" command is cancelled or when
the "Voltage disconnection" or "E-Stop" command is input, the
"Close brake" command is not input until n< n
min
(P370, P371)
is reached.)
2 The brake is an operating brake
(When the "Operating enable" command is cancelled or when
the "Voltage disconnection" or "E-Stop" command is input, the
"Close brake" command is input immediately, i.e. while the
motor is still rotating.)
1 to 2 Ind: None
FS=1
Type: O2
P052 = 3
P051 = 40
Offline
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