ABB 615 Series ANSI, Техническое руководство

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1MAC050144-MB C
Section 8
Measurement functions
615 series ANSI 597
Technical Manual
8.14.5 Application
84T provides tap position information for other functions as a signed integer value that can
be fed to the tap position input.
For many applications, for example differential protection algorithms, the position
information of the tap changer can be coded in various methods. In this function, the binary
inputs in the transformer terminal connector are used as inputs to the function. The user
can choose the coding method by setting the mode parameter. The available coding
methods are BCD, GRAY and Natural binary coding. Since the number of binary inputs
is limited to seven, the coding functions are limited to 7-bit, including the sign bit, and thus
the 6 bits are used in the coding functions. The position limits for the tap positions at BCD,
GRAY and Natural binary coding are ±39, ±63 and ±63 respectively.
8.14.6 Signals
Table 504: 84T Input signals
8.14.7 Settings
Table 505: 84T Non group settings
0 1 0 0 0 0 1 33 21 62
0 1 0 0 0 1 0 34 22 60
0 1 0 0 0 1 1 35 23 61
0 1 0 0 1 0 0 36 24 56
... ... ... ... ... ... ...
Inputs TAP_POS outputs
Name Type Default Description
BI0 BOOLEAN 0=False Binary input 1
BI1 BOOLEAN 0=False Binary input 2
BI2 BOOLEAN 0=False Binary input 3
BI3 BOOLEAN 0=False Binary input 4
BI4 BOOLEAN 0=False Binary input 5
BI5 BOOLEAN 0=False Binary input 6
SIGN_BIT BOOLEAN 0=False Binary input sign bit
Parameter Values (Range) Unit Step Default Description
Operation 1=Enable
5=Disable
1=Enable Operation Off / On
Operation mode 1=NAT2INT
2=BCD2INT
3=GRAY2INT
2=BCD2INT Operation mode selection