ABB SPAC 531 C User Manual And Technical Description page 143

Data
Activation of the self-supervision output
Fault code generated by the
self-supervision system
Module data communication address
Program version of the relay module
Relay module type designation
Reading of event register
Re-reading of event register
Reading of relay module status data
Resetting of module status data
Reading and setting of the time
R = data that can be read from the relay module
W = data that can be written to the relay module
The data transfer codes L, B, C and T are used
for the communication between the relay mod-
ule and the data communication equipment.
The event register can be read only once by the
L command. Should a fault occur, for instance,
during the data transfer, the B command allows
re-reading of the contents of the event register
previously read by means of the L command. If
required, the B command can be repeated.
The setting values S1...S5 are currently acti-
vated by the protection relay. They are set either
remotely over the SPA bus and the serial port of
the relay or locally by means of the setting knobs
on the relay module front panel. The setting
values S11...S15 are set with the setting knobs
and the switches. The values S21...S25 are per-
centage factors to be multiplied by the values set
with the knobs in order to obtain the remote set
values of parameters S31...S35. The values of
Code Data Values
direct.
V165 W 1 = self-supervision output
activated and IRF indi-
cator lit in about 5 s,
whereafter the self-
supervision system re-
sets and the IRF in-
dicator is switched off
V169 R 0...255
V200 W 1...254
V205 R e.g. 068 B
F R SPCS 3C4
L R Time, channel number
and event code
B R Time, channel number
and event code
C R 0 = normal state
1 = module been subject
to automatic reset
2 = overflow of event regist.
3 = events 1 and 2 together
C W 0 = resetting
T R, W 00.000...59.999 s
variables S21...S25 can be read and written. A
condition for the writing is that the password,
V160, for remote setting has been opened and
the potentiometer settings must be valid,
V150=0. The variables S31...S35 contain the
actual remote setting values.
The remote setting percentages of variables
S21...S24 can be given a value within the range
0...999. Thus it is also possible to alter a setting
value beyond the specified setting range of the
parameter. However, the accuracy of the setting
values are guaranteed only within the setting
ranges specified in the technical data.
Activation of the self-supervision input (V165)
prevents the protection relay from operating as
long as the self-supervision input is activated
and the IRF indicator is illuminated.
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