ABB REG316 4 Series Operating Instructions Manual page 632

ABB Switzerland Ltd
Utility Automation
Hardware (cont'd.)
Software
Numerical generator protection
The processor core essentially comprises the
main microprocessor for the protection algo-
rithms and dual-ported memories (DPMs) for
communication between the A/D converters
and the main processor. The main processor
performs the protection algorithms and con-
trols the local HMI and the interfaces to the
station control system. Binary signals from
the main processor are relayed to the corre-
sponding inputs of the I/O unit and thus con-
trol the auxiliary output relays and the light
emitting diode (LED) signals. The main pro-
cessor unit is equipped with an RS232C serial
interface via which among other things the
protection settings are made, events are read
and the data from the disturbance recorder
memory are transferred to a local or remote
PC.
On this main processor unit there are two
PCC slots and one RS232C interface. These
serial interfaces provide remote communica-
tion to the station monitoring system (SMS)
and station control system (SCS) as well as to
the remote I/O's.
Both analogue and binary input signals are
conditioned before being processed by the
main processor: As described under hard-
ware above, the analogue signals pass
through the sequence input transformers,
shunt, low-pass filter (anti-aliasing filter),
multiplexer and A/D converter stages and
DSP. In their digital form, they are then sepa-
Fig. 2 Data Flow
REG316*4 can have one to four binary I/O
units each. These units are available in three
versions:
a) two tripping relays with two heavy-duty
contacts, 8 optocoupler inputs and 6
signalling relays Type 316DB61
b) two tripping relays with two heavy-duty
contacts, 4 optocoupler inputs and 10 sig-
nalling relays Type 316DB62
c) 14 optocoupler inputs and 8 signalling
relays Type 316DB63
When ordering REG316*4 with more than 2
I/O units casing size N2 must be selected.
According to whether one or two I/O units
are fitted, there are either 8 LED's or 16
LED's visible on the front of the REG316*4.
rated by numerical filters into real and appar-
ent components before being applied to the
main processor. Binary signals from the opto-
coupler inputs go straight to the main proces-
sor. The actual processing of the signals in
relation to the protection algorithms and logic
then takes place.
REG316*4
1MRK502004-Ben
Page 4