21
Remote transfer data
In addition to the event codes (E events) the
substation level control data communicator is
able to read all input data (=I data), set values
(=S data), control parameters (=V data) and
some other data from the regulator module over
the SPA bus. Some of the data can be altered
via commands given over the SPA bus. All in-
formation is available on the 0 channel, which
does not have to be written in the communica-
tion instructions.
When a setting value is to be changed, either
from the push-buttons on the front panel or via
the SPA bus, the regulator checks whether the
parameter values are legal, i.e. within the per-
mitted setting ranges.
Parameters can be changed only by opening the
password. The password is a value within the
range 1…199. Default value is 1.
The password can be changed via the SPA bus
or using the push-buttons on the relay module.
The password is opened by writing a value to
the parameter V160 and closed by writing the
same value to parameter V161. The password is
also closed by voltage failures. When using the
push-buttons, the password is changed in
subregister 3 of register A, where the old pass-
word is replaced by the new one.
If the wrong password is given 7 times, it turns
to zero and can no longer be opened via the
bus. Then the password can be given a new value
only from the push-buttons.
R = data can be read from the module
W = data can be written to the module
(P) = password to be opened before writing is
possible
Inputs
The measured voltage, currents and the status
of external control signals can be read from the
parameters I1...I18. Some of the external con-
trol signal parameters also allow writing. If the
value 1 is written to a parameter that is 0, the
module treats it as a short energizing pulse on
the corresponding control signal, and when the
command has been executed, the parameter
value returns to 0.
Note!
Reading of the parameters I9 and I10 gives the
status of the external control signals, whereas
writing the value 1, always activates the inter-
nal raise and lower control signals. Hence, soft-
ware switches SGF1/1 and SGF2/8 do not in-
fluence the writing of parameters I9 and I10.
SGF1/3 needs to be 1 and the blocking input
in remote state, to enable the activation of the
internal raise and lower signals, by the param-
eters I9 and I10.
Data
Para-
Read or
Value (range)
meter
write
Inputs
Measured phase-to-phase voltage U
m
I1
R
0.00…1.28 x U
n
Measured current on phase L1
I2
R
0.00…2.50 x I
n
Measured current on phase L2
I3
R
0.00…2.50 x I
n
Measured current on phase L3
I4
R
0.00…2.50 x I
n
Measured phase shift
I5
R
0.00…
±
180
°
Auto
I6
R, W
0 = deactivated
1 = activated
Manual
I7
R, W
0 = deactivated
1 = activated
Tap-changer operating (TCO)
I8
R
0 = deactivated
1 = activated
Raise
I9
R, W
0 = deactivated
1 = activated
Lower
I10
R, W
0 = deactivated
1 = activated
Reduce set voltage (RSV)
I11
R
0 = deactivated
1 = activated
Blocking
I12
R
0 = no blocking
1 = blocking
Measured current selected with
I18
R
0.00…2.50 x I
n
switches SGF2/6 and SGF2/7
