KROHNE H250 M40 EN - Manual (Page 47)

OPERATION
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47
H250 M40
www.krohne.com 11/2012 - 4000640702 MA H250 M40 R02 en
OUTPUT B2 1.2 Output B2 is a binary switching output. Under Fct. 3.4, one of the
following functions can be attributed to this output
INACTIVE, SWITCHPOINT, COUNTERLIM. or PULSEOUTP.
One of the following functions can be selected as contact type under Fct. 3.5:
NO contact 1 / NC contact 2
1.2.1 INACTIVE
FLOW.VAL B2 see FL.R. VALUE B1
Under Fct. 1.2.2 a hysteresis can also be specified.
COUNTER.VAL B2 See COUNTER.VAL B1
PULSE WDTH B2 see PULSE WDTH Fct. 1.1.1
Configuration takes place under Fct. 1.3.1 (pulse width) and Fct. 1.3.2
(pulse/unit).
1.2.2 HYST.B2 See HYST. B1
PULSEOUTP. 1.3
1.3.1 Pulse width
50ms T
i
= 50 ms; f
max
= 10 Hz
max. pulse / h = 36000
4ms T
i
= 100 ms; f
max
= 5 Hz
max. pulse / h = 18000
200ms T
i
= 200 ms; f
max
= 2,5 Hz
max. pulse / h = 9000
500ms T
i
= 500 ms; f
max
= 1 Hz
max. pulse / h = 3600
1.3.2 PULSE/UNIT
0.001 ...
1000
Pulses per volume or mass unit, which can be output via one of the
binary outputs.
The maximum frequency for the pulse output (see Fct 1.3.1) cannot be
exceeded, even at maximum flow rate (final value).
Example: Example: Example: Example:
Final value Qmax = 1200 l/h; volume unit counter = Litre; pulse
duration = 100 ms;
If the factor 1 is entered, 1 pulse/litre = 1200 pulses are generated in
one hour at maximum flow rate.
Number of max. permissible pulses:
Label Level Select /
Input
Explanation
MA_H250_M40_R02_en_640702_PRT.book Page 47 Wednesday, November 28, 2012 12:23 PM