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16
B1
Passive (max 4 kHz)
Max. voltage 350 V
p-p
Max. perm. current 120 mA
Max. pulse current 300 mA
Resistance 27
Ω
B2
Passive (max 12 kHz)
Max. voltage 60 V
p-p
Max. perm. current 300 mA
Max. pulse current 500 mA
Resistance 5
Ω
B3
Active
Voltage 5 V
Max. current 10 mA
Max. frequency 12 kHz
B4
Active
Voltage 24 V
Max. current 40 mA
Max. frequency 12 kHz
B5
Relay contacts
Max. voltage 250 VAC
Max. current 1 A
Binary output modules B1 - B5
Flowmeter converter can con-
trol up to 4 multifunctional bi-
nary outputs in positions 4 – 7.
Following table indicates differ-
ences between individual mod-
ules:
Outputs can work as pulse,
frequency or status outputs.
Individual functions are ex-
plained in detail in following
section.
Binary module func-
tions
·
Normally closed/open
These modes are used for ser-
vice purposes.
·
Pulse outputs (not)
In this mode, a pulse is gener-
ated immediately after preset
volume has flowed. Pulse gen-
eration is determined by three
factors: pulse length “
t
u
”, mini-
Tab.
Binary output modules
mal delay between two pulses
“
t
D
” and volume per pulse “
V
”.
Flow rate values are time inte-
grated. Immediately after preset
volume per pulse has flowed,
the pulse of length t
u
is gener-
ated. After the pulse, there is a
delay of length at least t
D
. If the
delay expires and the preset
volume has not flowed again,
the output remains inactive;
otherwise, another pulse and
delay are generated immedi-
ately. If the preset volume flows
through sooner than the previ-
ous pulse is finished, the unsent
pulse will be stored in a buffer
with maximum capacity of 255
pulses. If buffer overflow oc-
curs, an error message will be
generated. It follows from above
mentioned that parameters of
pulse output should be set such
that expected pulse frequency
cannot exceed limit frequency
determined by pulse length and
delay.
It applies: Maximum pulse
frequency [s
-1
] = 1 / (t
u
+ t
D
)
Volume per pulse can be set in
range from 1 to 10
9
ml with 1 ml
step, i.e. from 1 ml to 1000 m
3
.
Delay and pulse lengths can be
set in range form 10 ms to 2550
ms with 10 ms step. It follows
from above mentioned that the
maximum pulse frequency is 50
s
-1
.
Pulses can be generated in
three modes depending on flow
rate, and pulse polarity can be
set (output is closed during
pulse or open in not modes).
Fig. Pulse generation
Fig. IQI pulses
Fig. Q+ pulses
Fig. Q- pulses
·
Frequency outputs
In this mode of operation, fre-
quency is generated on output
modules. Pulse to delay ratio is
always 1:1. Warning! Only two
frequency generators in posi-
tions 4 and 5 are available for
the converter. This function is
blocked in positions 6 and 7.
Maximum frequency in position
4 is 12 kHz and in position 5
only 1.2 kHz. If these limit fre-
quencies are exceeded, output
frequency will be limited and an
error message will be gener-
ated.
Frequency outputs can work in
three modes of frequency de-
pendence on flow rate.
Setting is done by selecting of
flow rate corresponding to 1
kHz output frequency.
Fig. Q+ frequency
Fig. Q- frequency
Fig. IQI frequency