18 Outputs
130
UMFLUXUS_G8V4-6-1EN, 2018-10-10
18.6.2
Setting the Limits
If the switching condition
MAX
or
MIN
is selected in the scroll list
func
, the limit of the output will have to be defined:
Tab. 18.4: Alarm properties
alarm property
setting
description
func
(switching condition)
MAX
The alarm will switch if the measured value exceeds the upper
limit.
MIN
The alarm will switch if the measured value falls below the low-
er limit.
+
→
- -
→
+
The alarm will switch if the flow direction changes (sign change
of measured value).
QUANT.
The alarm will switch if totalizing is activated and the totalizer
reaches the limit.
ERROR
The alarm will switch if a measurement is not possible.
OFF
The alarm is switched off.
typ
(holding behavior)
NON-HOLD
If the switching condition is no longer true, the alarm will return
to the idle state after approx. 1 s.
HOLD
The alarm remains activated even if the switching condition is
no longer true.
mode
(switching function)
NO Cont.
The alarm is energized if the switching condition is true and de-
energized if idle.
NC Cont.
The alarm is de-energized if the switching condition is true and
energized if idle.
Note!
If no measurement is made, all alarms will be de-energized, independently of the programmed
switching function.
Select in the scroll list
Input
the physical quantity to be used for the comparison. The fol-
lowing list items are available for the alarm output R1:
• selected physical quantity
• signal amplitude
• sound speed of the fluid
Press ENTER.
For the alarm outputs R2 and R3 the current physical quantity is set automatically.
switching condition:
MAX
Enter the upper limit. Press ENTER.
The alarm will switch if the measured value exceeds the limit.
switching condition:
MIN
Enter the lower limit. Press ENTER.
The alarm will switch if the measured value falls below the limit.
Example 1:
High Limit:
-10 m³/h
volumetric flow rate = -9.9 m³/h
the limit is exceeded, the alarm switches
volumetric flow rate = -11 m³/h
the limit is not exceeded, the alarm does not switch
R1 Input:
↕
Volume flow
R1 Input:
↕
act. Volume flow
High Limit:
-10.00
m3/h
Low Limit:
-10.00
m3/h
