6
OPERATION
102
IFC 300
www.krohne.com
06/2009 - 4000069802 - MA IFC 300 R03 en
C2.3.11
special functions
This function is only available at the terminal B frequency output. At the
same time, 2 frequency outputs must be available:
1st output at terminal A or D / 2nd output at terminal B
The B output is operated as a slave output, controlled and set using master
output A or D
Selection: off (no phase shift) / phase shift w.r.t. D or A (slave output is B and
master output is D or A)
C2.
.12
information
Serial number of the I/O circuit board, software version number and
production date of the circuit board
C2.
.13
simulation
Sequence see B1.
frequency output X
C2.
pulse output X
C2.
pulse output X
X stands for one of the connection terminals A, B or D
stands for Fct. no. C2.2 (A) / C2.3 (B) / C2.5 (D)
C2.
.1
pulse shape
Specify the pulse shape.
Select: symmetric (about 50% on and 50% off) / automatic (constant pulse
with about 50% on and 50% off at 100% pulse rate) / fixed (fixed pulse rate,
setting see below Fct. C2.
.3 100% pulse rate)
C2.
.2
pulse width
Only available if set to "fixed" in Fct. C2.
.1.
Range: 0.05
…
2000 ms
Note: max. setting value Tp [ms]
≤
500 / max. pulse rate [1/s], gives the pulse
width = time where the output is activated
C2.
.3
max. pulse rate
Pulse rate for 100% of the measuring range.
Range: 0.0
…
10000 1/s
Limitation 100% pulse rate
≤
100/s: I
max
≤
100 mA
Limitation 100% pulse rate > 100/s: I
max
≤
20 mA
C2.
.4
measurement
Measurements for activating the output.
Select: volume flow / mass flow
C2.
.5
pulse value unit
Selection of the unit from a list, depending on the measurement.
C2.
.6
value p. pulse
Set value for volume or mass per pulse.
xxx.xxx, range in [l] or [kg] (volume or mass for current output C2.
.6)
At max. pulse rate see above 2.
.3 pulse output.
C2.
.7
polarity
Set polarity, please note flow direction in C1.2.2!
Select: both polarities (plus and minus values are displayed) / positive
polarity (display for negative values = 0) / negative polarity (display for
positive values = 0) / absolute value (use for the output)
C2.
.8
low flow cutoff
Sets output value to "0"
x.xxx
±
x.xxx%; range: 0.0
…
20%
(1st value = switching point / 2nd value = hysteresis),
condition: 2nd value
≤
1st value
C2.
.9
time constant
Range: 000.1
…
100 s
C2.
.10
invert signal
Select:
off (activated output generates a high current at the output, switch closed)
on (activated output generates a low current at the output, switch open)
C2.
.11
phase shift w.r.t. B
Only available when configuring the A or D terminal and only if output B is a
pulse or frequency output. If setting in Fct. 2.5.6 is "both polarities", the
phase shift is prefixed by a symbol, e.g. -90
°
and +90
°
.
Select: off (no phase shift) / 0
°
phase shift (between outputs A or D and B,
inversion possible) / 90
°
phase shift (between outputs A or D and B, inversion
possible) / 180
°
phase shift (between outputs A or D and B, inversion
possible)
.book Page 102 Wednesday, June 10, 2009 4:20 PM
