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Register
Recorded information
Duration of the latest starting situation (n) of stage ∆I> expressed as a percentage
8
of the set operating time t∆. When the concerned stage has alarmed the counter
reading is 100 per cent. //
Duration of event (n-1) starting of stage ∆I> //
Duration of event (n-2) starting of stage ∆I> //
Duration of event (n-3) starting of stage ∆I> //
Duration of event (n-4) starting of stage ∆I> //
Number of startings of the stage ∆I> in the range 0...255.
0
Display of external control signals. The right-most digit indicates the state of
the control input of the unit. The following states may be indicated:
0 = no control signal
1 = the control signal is active
From this register "0" it is possible to move on to the TEST mode, where the
alarming signals of the module are activated one by one in the following order
and indicated by the flashing setting indication LED:
> [ ]
I
A
>
t
[ ]
s
>
[ ]
I
A
o
t
>
[ ]
s
o
∆ >
[ ]
%
I
t ∆
>
[ ]
s
For further details see the description "General characteristics of D-type SPC
relay units".
A
The address code of the fault indicator, required by the serial communication
system. //
The selection of the data transfer rate of the serial communication. //
The bus traffic monitor indicating the operating state of the serial communication
system. If the module is connected to a system including a control data commu-
nicator and if the communication system is operating, the counter reading of the bus
traffic monitor will be zero. Otherwise the numbers 0...255 are continuously
rolling in the display. //
Password required for the remote control of the settings. The password must
always be entered via the serial communication before a setting can be altered
remotely.
The registers 1...8 are set to zero by pressing the
push-buttons RESET and PROGRAM simul-
taneously. The registers are also cleared if the
auxiliary power supply to the module is inter-
rupted. The address code of the unit, the data
transfer rate of the serial communication and
the password are not erased by a voltage failure.
Instructions for setting the address and the data
transfer rate are given in the manual "General
characteristics of D type SPC relay units".
Alarm from I>
Alarm from I
>
0
Alarm from ∆I>
The recorded information contains a time stamp
which includes date and time in the form at:
yy-dd hh, mm; ss, sss.
The time stamps of the registers can be read via
the serial bus by using parameters V19, V39...99
(see page 21 "Data to be transferred over the
bus"). After a power supply interruption or
start-up, date and time should be set via the bus
by using parameters T and D (se page 23).
17
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