KROHNE H250 M40 EN - Manual (Page 46)

6
OPERATION
46
H250 M40
www.krohne.com 11/2012 - 4000640702 MA H250 M40 R02 en
6.6.3 Menu explanations
1 Operation
Label Level Select /
Input
Explanation
OUTPUT B1 1.1 Output B1 is a binary switching output. Under Fct. 3.2, 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. 3.3:
NO contact 1 / NC contact 2
1.1.1 INACTIVE
FLOW.VAL B1 Flow value switching point
Value range: 0.0 … measuring range end value
The switching point is entered in flow units.
If the current flow value exceeds this predetermined switching point,
output B1 changes its binary state 3.
Under Fct. 1.1.2 a hysteresis can also be specified.
COUNTER.VAL B1 Switching point totaliser value
Value range 0.0 … counter limit
The switching point is entered in volume or mass units.
If the the current counter value exceeds this predetermined switching
point, output B1 changes its binary state 3.
There is no hysteresis setting for the counter value switching point.
Pulse width Pulse value (pulse/unit)
The value is now displayed here.
Configuration takes place under Fct. 1.3.1 (pulse width) and Fct. 1.3.2
pulse/unit).
1.1.2 HYST.B1 Hysteresis for the flow value switching point
Value range 0.0 … switching point
If the current flow value exceeds the predetermined switching point
from Fct. 1.1.1, output B1 changes its binary state 3.
In order for output B1 to change its binary state back to the initial
setting, the switching point made smaller by the hysteresis must be
undershot 4.
Example: Example: Example: Example:
Under 1.1.1, a switching point of 200 L/h is set.
The possible value range for the hysteresis is then 0.0 … 200 L/h.
With a hysteresis value of 0, the switching point has no hysteresis
(3=4).
If a hysteresis value of 20 L/h is entered, output B1 changes its binary
state to the initial setting if 180 L/h is undershot 4.
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