ABB REG316 4 Series - Page 398

ABB Switzerland Ltd REG 316*4 1MRB520049-Uen / Rev. F
3-360
· When the new impulse counter results are frozen at the end
of the interval, the binary output “Cnt1New”, respectively
“Cnt2New” is set to TRUE. It is reset after 30 s regardless of
interval duration and can be used to initiate reading of a new
set of frozen interval values.
· If selected for transmission, transmission of the counter
values via the LON interface is initiated by the positive-going
edge of this output.
· The values E
acc_interval
and Pulse
acc_interval
of the respective
channel are only recorded as measurement events providing
the output “Cnt1New”, respectively “Cnt2New” is being used,
for example, to control an event recorder, LED or signalling
relay.
The freezing of results, resetting and event recording of the
interval counters is illustrated in Fig. 3.7.5.3.
t
Interval
t
Interval
t
Interval
Measurement
event
t
Reset
Internal onl
y
Pulse
accumulate
t
t
Interval
t
Interval
t
Counter
Frozen
30 s
30 s
30 s
30 s
30 s
Pulse
acc_interval
Internal onl
y
t
t
Impulse counter input
Fig. 3.7.5.3 Interval processing