—————— Instruction manual ——————
179
a consequence, the value of the field current will be determined by this characteristic
(see Flux /if curve paragraph 5.3.7).
Reset flux / if
Command for the reset of the flux curve set via command
Set flux / if
.
With this command the
Motor nom flux
parameter will be again linearly changed
through
Flux current max/Flux reference
. (see Flux /if curve paragraph 5.3.7)
Nom flux curr
Rated current I
FN
of the field regulator. In order to improve the behaviour of the regula
-
tion, the maximum field current can be reduced by setting the S14 dip-switches (on the
regulation board, see table 2.4.3.2).
Example
Armature:
500 VDC
Field:
230 VDC
102 ADC
0.8 ADC
Drive type:
TPD32-EV-500/...-140...
(Field current set to 14 Amps = default)
Set the dip switches S14 to decrease the field current from the drive supplied, as below:
Switch ohms
168.5 Ohm 333 Ohm 182 Ohm 36.4 Ohm 845 Ohm 1668 Ohm
Equivalent
resistance
Nom flux curr
S14-1
S14-2
S14-3
S14-4
S14-5
S14-6
1.0 A
OFF
OFF
OFF
OFF
OFF
ON
1668 Ohm
GD6111g
Set
Nom flux curr
parameter to 0.8.
Motor nom flux
Rated field current I
FN
of the connected motor.
FC limit ramp
When using the TPD32EV-FC, you can add a ramp time at the current limits of the
armature to achieve best control of armature current during reversal of the bridge from
“positive” to “negative” (and vice versa).
If
Enabled
, after switching of the SCR bridge, the setting used for the armature current
limit is 1% of the current setting. This limit will gradually be set to 100% based on the
ramp time specified in the
FC lmt ramp time
parameter.
FC lmt ramp time
Ramp time value relative to change in armature current from 0 to 100%.
Содержание TPD32-EV-...-2B
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