113
DNP analog values deadband
The deadband is always defined in units of the original value when scaled using the
internal (fixed) scaling factor, irrespective of whether the internal scaling factor is
used for value presentation or not.
Example:
For a deadband of 2% I
n
when the internal scaling factor is 100, the deadband
value is set as follows: 0.02 × 100 = 2. If the scaling factor is set to 300 A, the
scaled deadband is 300 A × 0.02 = 6 A.
5.1.17. SPA bus communication protocol parameters
Altering parameter values via serial communication requires the use of the SPA
password in some cases. The password is a user-defined number within the range
1...999, the default value being 001. SPA parameters are found on channels 0...5,
503...504, 507 and 601...603.
To enter the setting mode, enter the password into parameter V160. To exit the
setting mode, enter the same password into parameter V161. The password
protection is also reactivated in case of loss of auxiliary voltage.
The password can be changed with parameter V162, but it is not possible to read
the password via this parameter. Abbreviations used in the following tables:
*
R = readable data
*
W = writeable data
*
P = password protected writeable data
Settings
Table 5.1.17.-1 Settings
Variable Actual settings
(R), channel 0
Group/Channel 1
(R, W, P)
Group/Channel 2
(R, W, P)
Setting range
Start value of stage I> S1 1S1 2S1 0.30...5.00 x I
n
Operate time of stage I> S2 1S2 2S2 0.05...300 s
Time/current characteristic for stage I> S3 1S3 2S3 0...9
Time multiplier k S4 1S4 2S4 0.05...1.00
Time multiplier n S5 1S5 2S5 1.0...15.0
Resetting time of stage I> S6 1S6 2S6 0.05...2.50 s
Start value of stage I>> S7
a)
1S7 2S7 0.50...35.0 x I
n
Operate time of stage I>> S8 1S8 2S8 0.04...300 s
Start value of stage I>>> S9
a)
1S9 2S9 0.50...35.0 x I
n
Operate time of stage I>>> S10 1S10 2S10 0.04...30.0 s
Start value of stage I
0
> S11 1S11 2S11 1.0...100% I
n
Operate time of stage I
0
> S12 1S12 2S12 0.05...300 s
Time/current characteristic for stage I
0
> S13 1S13 2S13 0...9
Feeder Protection Relay
Technical Reference Manual
REF 610REF 610
1MRS755310
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