ABB REU 610, Техническое справочное руководство

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89
To show the analog value in primary units, and if U
n
(VT) = 20000 V:
1. Take any unused scaling factor and set it to 20000.
2. Set the scaling index pointer of the analog value to point at the scaling
factor.
3. The value range is now 0.00 ×20000...2.00 × 20000 = 0...20000 V.
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% U
n
(VT) 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 20 kV, the scaled deadband is 20 kV × 0.02 = 400 V
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
1MRS755972
Voltage Relay
Technical Reference Manual - ANSI Version
REU 610