KROHNE MFC 300 EN - Manual (Page 87)

OPERATION
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87
MFC 300
www.krohne.com 02/2012 - 4000498602 - MA MFC 300 R03 en
C3. .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
C3. .9 Time Constant Range: 000.1…100 s
C3. .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)
C3. .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. C2.5.6 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)
C3.3.11 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)
C3. .12 Information Serial no. of the I/O board, software version no. and production date of the
circuit board
C3. .13 Simulation Sequence see B1. Frequency Output X
C3. Pulse Output X
C3. Pulse Output X X stands for one of the connection terminals A, B or D
stands for Fct. no. C3.2 (A) / C3.3 (B) / C3.5 (D)
C3. .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. C3. .3 100% pulse rate)
C3. .2 Pulse Width Only available if set to "fixed" in Fct. C3. .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
C3. .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
C3. .4 Measurement Measurements for activating the output.
Select: Volume Flow / Mass Flow
C3. .5 Pulse Value Unit Selection of the unit from a list, depending on the measurement.
C3. .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 C3. .6)
At max. pulse rate see above 3. .3 Pulse Output.
C3. .7 Polarity Set polarity, please note Flow Direction in C1.3.2!
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)
.book Page 87 Monday, February 6, 2012 11:01 AM