Santerno DCREG2 Series User Manual page 16

15P0059B3
USER MANUAL
2.4.4 The device is already supplying the motor field winding, according to the economy function (Field
Economy) set in par. C014.
On parameter C010 (default value: 10%), set the field rated current percentage of the motor with
respect to the field rated current of the drive. The standard values of the drive field rated current are 5A for
DCREG.100max.,15A for DCREG.150min Size 1 and 35A for DCREG Size 2(A) and MODULAR.S.
If need be, you can also change the standstill field current on parameter C014 (default value: 10% of
C010) and the field decrease delay on parameter C015 (default value: 240s).
If a boost on the field current is to be set at the device starting, adjust the value of parameter C017
(default value: 100%) and parameter C018 (default value: 10s) accordingly by enabling the function
through one of the configurable digital inputs; set parameters C130(131)(132)(133)(134)(135) to the
11:FldFrcEnabled value. This, however, could have no effect if the field current increase does not produce
any remarkable field flux increase, thus limiting this function application.
2.4.5 If a dynamic regulation of the field current in field weakening mode is required - with a speed
feedback different than the armature feedback - besides programming par. C010 and C014, program the
motor armature nominal voltage in par. C012 (default value: 1000V), the value per cent of the field
weakening start max. speed in par. C011 (default value: 33%) and the limit at the field current min.
value in par. C016 (default value: 25% of C010).
As stated in the FIELD REGULATOR chapter, set the last value at approx. 75% of the min. motor rated
field current corresponding to its max. speed.
2.4.6 Make sure that the rated value of the power section supply voltage corresponds to the
indications stated in parameter C030 (default value: 400V): if necessary, change the value.
2.4.7 Access parameter C000 (default value: 100%) and set the percentage value of the armature
rated current of the motor with respect to the armature rated current of the drive.
If need be, also set a proper thermal constant on parameter C002 (default value: 300 s) by following the
general indications described in the chapter of this manual dealing with that parameter.
2.4.8 Choose the operating mode of the current loop through parameter C051 (default value: PI). It
is advised to leave the default selection of C051 at value 0:PI Operating in most cases, and to set C051
selection at value 1:Predictive=>J1 only when a very quick response is demanded with a DCREG4 in
enP/Nr or tacho feedback mode, unless the load inertial torque is much lower than the resisting torque.
2.4.9 When choosing the second mode (predictive algorithm), set jumper J1 from position 1 to position
0. Jumper J1 is located on board ES729/1 (installed inside the equipment on ES728/2 control board), then
perform current autotune and set parameter P001 to value 1:Current and follow the instructions
displayed (see also the AUTOMATIC TUNING section). By contrast, if the first mode (PI regulator) is
chosen, go on with the next step of this Procedure.
2.4.10 Access parameter C070 (default value: Tacho feedback: 80 ... 250V) and make sure that the
speed feedback type which has been set corresponds to the one required.
2.4.11 Should the feedback be generated from a tacho, check the value set on C070 (among values 0-
1-2), which should match the terminal being used to receive the signal from the tacho.
Then, if the tacho transduction ratio set on parameter C074 (default value: 60V / 1000 RPM) is correct,
set the speed concerning the maximum reference in parameter P010 (default value: 2500RPM) in
r.p.m.
NOTE
16/200
Any value being set for parameters C074 and P010 should be programmed in
such a way that product C074•P010 does not exceed 25V if C070 = 0, 80V if
C070 = 1, 250V if C070 = 2. Otherwise, this will cause drive speed control
failure.
DCREG2
DCREG4