Remote Transfer Data - ABB REU 523 Technical Reference Manual

1MRS 750942-MUM
4.1.9.3.
ABB Automation
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
1 = included in event reporting
Table 4.1.9.2-6 Event codes E50 and E51
Code Event
E50 Restart of relay
E51 Overflow of event register
Events E50 and E51 are always included in event reporting.

Remote transfer data

In some cases, altering parameter values via serial communication requires the use
of the SPA password. The password is a number within the range 1...999. The
default value for the SPA password is 1.
Password protection is removed by entering the password number in parameter
V160 and reinstated by writing the same password to parameter V161. Loss of the
auxiliary supply voltage also reinstates protection.
For example, to change a value of setting group 1, stage U> to 0.7 x U
follows:
• Enter the password, WV160:1
• Write a new value, WS41:0.7
• Reinstate password protection, WV161:1
The SPA password can be changed via the serial bus by entering first the current
password in parameter V160, and writing then a new password to parameter V161.
The MMI password can be changed via parameter V162 but it is not possible to read
the password from this parameter.
Abbreviations used in following tables:
• R = readable data
• W = writeable data
• P = password protected writeable data
• I = input data
• S = setting value
• V = recorded data/ parameter
• M = disturbance recorder parameter
• O = output data
REU 523
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