47113964.2.023РЭ
34
Figure B.5
B.2.6.2 The «ExtDev» protocol is intended to incessant transmission (without enquiry message)
of the measurement data by «RS-485(2)» interface to the external indication device. External indica-
tion device is supplied on separate order.
- AED is the seven-segment display indication device. It indicates three selected parameters and set
points (30 devices into one transducer maximum).
- AEGD is the indication device performed on the graphic display. It indicates three snapshots with
eight selected parameters alternately.
The external indication device image the data by way of four-digit decimal number corresponds to
measurand expressed in measurement unit. The updating rate of data is 3 Hz.
B.2.6.3 Enter the transformation ratio of a voltage transformer (K
U
) by keyboard at the
«Transformer voltage ratio (K
U
)» area and push the «Enter» button. The value of the K
U
should be
integer. The default value is K
U
= 1.
B.2.6.4 Enter the transformation ratio of a current transformer K
I
by keyboard at the
«Transformer current ratio (K
I
)» area and push the «Enter» button. The value of the K
I
should be in-
teger. The default value is K
I
= 1.
B.2.6.5 After transformation ratio data entry the program is calculating nominal values. Calcu-
lated values and the measurement units are indicated at the «Measured parameters» area. The form of
the program window with K
U
=1100 and K
I
=120 is shown at the figure B.6.
