Functional Software description
DCS 500 Software Description 11
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Settings and commis-
sioning functions
SETTINGS function
block
This block serves for scaling all important signals. It is subdivided
into 5 parts.
The parameters 517 to 521 are only needed, if a C4 type converter
is used. For more details, please see OPERATING INSTRUCTION.
In special cases, the calculated EMF needs to be smoothed. Para-
meter EMF_FILT_TC (513) serves for this reason.
The converter can display parameters and internal signals in physi-
cal values. To be able to do so, some basic values have to be sca-
led:
U_MOTN_V (501) nominal motor voltage
I_MOTN_A (502) nominal motor current
I_MOT1_FIELDN_A (503) nominal field current for field supply
unit 1
I_MOT2_FIELDN_A (504) nominal field current for field supply
unit 2, if there is one
FEX_SEL (505) selection of field supply unit
There are several signals, which can be used for indication. The
signal armature voltage is already connected to the analog output 2.
The scaling of these signals is different.
U_ARM_ACT (10505) actual DC output voltage
scaling: 100% = 4095 equal 1.35 * P507 in volt
TORQUE_ACT (10503) calculated actual torque, based on
armature current and flux signal
scaling: 100% = 4000 equal nominal motor torque, if P502 is set
to nominal motor current and P503/504 is set to nomi-
nal motor field current
CONV_CUR_ACT (10501) actual DC output current
scaling: 100% = 4095 equal nominal converter current in A
ARM_CUR_ACT (10502) actual DC output current
scaling: 100% = 4095 equal nominal motor current in A, if P502
is set to nominal motor current
CURR_ACT_FILT_TC (523) serves for smoothing of current ac-
tual signals 10501 and 10502
In a similar way, some basic scalings have to be done for the motor,
they have to be done for the network too.
PHASE_SEQ_CW (506) phase rotation
U_SUPPLY (507) nominal line voltage
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