Santerno DCREG4.150 - Speed Control Mode Operation

DCREG2 15P0059B3
DCREG4 USER MANUAL
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2.4.12 Should the feedback be generated from an enP/Nr, check that the transduction ratio of the
supplied signal, which has been set on parameter C072 (default value: 1024 pulses/rev) is correct. If
necessary, change it accordingly.
The speed concerning the maximum reference (expressed in r.p.m.) should always be set on
parameter P010 (default value: 2500RPM).
NOTE
Any value being set in parameters C072 and P010 should be programmed in
such a way that product C072•P010 does not exceed 102.400k Hz (value
obtained from an enP/Nr supplying 1024 pulse/rev that can rotate at a speed
of max. 6000 RPM:
60
60001024
102400


), in order to avoid possible speed
control faults caused by the drive.
2.4.13 Should the feedback be generated from an armature, set on parameter P011 (default value:
400V for DCREG4, 460V for DCREG2) the armature voltage corresponding to the maximum value (in
Volt).
2.4.14 Except for a DCREG2 model, a DCREG4 model with an armature feedback or whenever the load
inertial moment is largely variable (e.g. in a coiler), the speed automatic tuning may be performed at that
moment. Set parameter P001 to value 2:Speed and follow the instructions displayed (see also the
AUTOMATIC TUNING section).
2.4.15 Now RxI armature resistive drop autotuning is to be done by setting par. P001 to 3:RxI and
following the instructions displayed (see also AUTOMATIC TUNING chapter). On the other hand, if the
autotuning function is not performed and par. P088 is left at its default value (0V), the drive will not be able
to process the back-electromotive force and to display it in par. M007 (BEMF) and it will not be able to
keep the BEMF constant during the dynamic adjustment of the field current in field weakening mode or in
armature feedback stage (by means of the compensation function to be done through parameter P86,
with a value defined as a percentage of par. P088 value).
2.5 SPEED CONTROL MODE OPERATION
2.5.1 The previous section MAIN CHECKS AND CONFIGURATIONS has already covered the
programming procedure of the speed corresponding to the maximum reference, as far as the three main
types of speed feedback (tacho, enP/Nr, armature) are concerned.
As for the analog inputs, main input REF between terminals 5 and 7 is generally used (in common mode,
in differential mode, or by sending a 0(4) … 20 mA reference after adjusting jumper JP407 of the control
board in pos. 2-3). The ramp function may be applied to said input.
Alternatively, it is possible to use input IN 1 between terminals 11 and 13 (in common mode, in differential
mode, or by sending a 0(4) … 20 mA reference after adjusting jumper JP408 of the control board in pos.
2-3).
You can finally use input IN 2 between terminal 17 and 0V or input IN 3 between terminal 19 and 0V.
NOTE
Whenever a (0)4 … 20 mA reference is to be used, refer to the chapter
dealing with MILLIAMPERE INPUT/OUTPUT SIGNALS to know the value to
be programmed in the parameters relating to the Gain and Bias operators.