KROHNE OPTIMASS with MFC 300 EN User Manual
Page 97
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Pulse / frequency output
Function
•
When set as frequency output: Mass and volume flow
rate, flow velocity, temperature, concentration, con-
centration flow, density, diagnosis values
•
When set as pulse output: volume, mass, concentra-
tion (e.g. 1 pulse / m3 or / kg)
•
active or passive mode, dependent on the output /
input assemblies, see section 9.8
Op. values and load
rating
Active
f
a
10 kHz: I
a
20 mA / f
a
100 Hz: I
a
100 mA
Unom 24 V DC / U0 1.5 V @ 10 mA
NAMUR to EN 60947-5-6 (operating data as for “passive“)
Pulse rate
0...10 kHz, scaleable (overflow up to fmax
a
12 kHz)
Pulse width
0.05 ...2000 ms (autom., symm. or settable)
Forward / reverse
measurement
Direction identified via status output, see below
Time constant
0...100.0 s, settable as required
Low-flow cutoff
Value: 0.0...20.0 %
of Q100% settable
as required
Hysteresis: ± 0.0...19.9 %
Status output
Function
•
Error in device, application error, out of specification
error, polarity, overrange, counter preset
•
active or passive operation, dependent on output /
input assemblies, see section 9.8
Op. values and load
rating
Active
U
a
24 V DC/ I
a
100 mA / U0
a
1.5 V @ 10 mA
Passive U
a
32 V DC/ I
a
100 mA / U0
a
1.5 V @ 10 mA
NAMUR to EN 60947-5-6 (operating data as for “passive“)
Time constant
0...100.0 s, settable as required
Control input
Function
•
hold outputs, set outputs to zero, stop cpunters, count-
er reset, error reset, range change,
•
active or passive operation, dependent on output /
input assemblies, see section 9.8.
Op. values and load
rating
Active
Inom = 16 mA / Unom = 24 V DC
Passive U
a
32 V DC/ / Uon
>
19 V DC / Uoff
<
2.5 V DC
NAMUR to EN 60947-5-6 (operating data as for “passive“)
Internal electronic
counters
Number
3, settable independent of one another
Measured variable
Total mass, volume or concentration
Function
Sum + or – counter and preset counter
Time constant
0 - 100.0 s, settable as required
Low-flow cutoff
Value: 0.0 - 20.0 %
of Q100%, settable as
required
Hysteresis:± 0.0 - 19.9 %.