DCREG2 15P0059B3
DCREG4 USER MANUAL
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7.2.60 P123: MAIN CURRENT INPUT POLARITY
This parameter sets the allowable polarity for the REF main input between
terminals 5 and 7 AFTER applying the Gain and Bias operators. This is true if
this input is a current reference, i.e. when the digital input programmed for the
6:Slave function (see par. C130 … C135) is closed.
0:Bipolar. Bipolar reference.
1:Positive only. Positive reference only.
2:Negative only. Negative reference only.
If you program a unipolar REF reference, the reference with the opposite polarity
will be shut and considered as equal to zero.
7.2.61 P124: CURRENT MAIN INPUT BIAS
This parameter represents, as a percentage of the max. reference
corresponding to 10V, the reference value obtained when the signal applied to
the REF main input between terminals 5 and 7 is equal to zero. Signal V
2
obtained when applying the Gain and Bias operators to signal V
1
is given by the
following formula:
100
124
10
100
125
12
PP
VV
This is true if this signal is a current reference, i.e. when the digital input
programmed for the 6:Slave function is closed (see par. C130 ...C135).
7.2.62 P125: CURRENT MAIN INPUT GAIN
This parameter represents the amplification which is internally applied to the
REF main reference between terminals 5 and 7, before being summed to the
Bias. Signal V
2
obtained when applying the Gain and Bias operators to signal
V
1
is given by the following formula:
100
124
10
100
125
12
PP
VV
This is true if this signal is a current reference, i.e. when the digital input
programmed for the 6:Slave function is closed (see par. C130 ...C135).
With two drives in MASTER / SLAVE configuration, as the reference standard
level supplied by the MASTER drive is 5V at the nominal current (M003 = 100%),
if also the SLAVE drive must supply its nominal current - with said reference at
REF main reference between terminals 5 and 7 - gain P125 (IrefGain) is to be
set at 200%.
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