Endress+Hauser Proline Prosonic Flow 93 Function Manual page 68

7 Block OUTPUTS
68
➞
OUTPUTS PULSE/FREQUENCY OUTPUT (1...2)
VALUE f HIGH Parameter setting example A:
(Continued) 1. VALUE f LOW (4204) = not equal to zero flow (e.g. -5 m
2. VALUE f LOW (4204) = not equal to zero flow (e.g. 100 m
and
MEASURING MODE (4206) = STANDARD
When you enter the values for VALUE f LOW and VALUE f HIGH the working range of
the measuring device is defined. If the effective flow drops below or exceeds this working
range (see
frequency output responds in accordance with the parameter settings in the function
FAILSAFE MODE (4209).
Parameter setting example B:
1. VALUE f LOW (4204) = equal to zero flow (e.g. 0 m
2. VALUE f LOW (4204) = not equal to zero flow (e.g. 100 m
and
MEASURING MODE (4206) = STANDARD
When you enter the values for VALUE f LOW and VALUE f HIGH the working range of
the measuring device is defined. In doing so, one of the two values is parameterised as
zero flow (e.g. 0 m
If the effective flow drops below or exceeds the value parameterised as the zero flow, no
fault/notice message is generated and the frequency output retains its value.
If the effective flow drops below or exceeds the other value, a fault/notice message is
generated (#351-354, frequency area) and the frequency output responds in accordance
with the parameters set in the function FAILSAFE MODE (4209).
Deliberately only one flow direction is output with this setting and flow values in the
other flow direction are suppressed.
Parameter setting example C:
MEASURING MODE (4206) = SYMMETRY
The frequency output signal is independent of the direction of flow (absolute amount of
the measured variable). The VALUE f LOW
same sign (+ or −). The "VALUE f HIGH"
VALUE f HIGH
ASSIGN RELAY (4700) = FLOW DIRECTION
Flow direction output via a switching contact.
Parameter setting example D:
MEASURING MODE (4206) = PULSATING FLOW
Device functions Proline Prosonic Flow 93
Functional description
➞
CONFIGURATION (GENERAL/FREQUENCY)
VALUE f HIGH (4205) = not equal to zero flow (e.g. 10 m
VALUE f HIGH (4205) = not equal to zero flow s (e.g. -40 m
①
), a fault or notice message is generated (#351-354, frequency area) and the
1)
mA
20
4
Q
-5 0 10
➀ ➀
VALUE f HIGH (4205) = not equal to zero flow (e.g. 10 m
VALUE f HIGH (4205) = equal to zero flow s (e.g. 0 m
3
/h).
1)
mA
20
4
Q
0 10
➀
➁
(e.g. flow).
mA
➂
3
/h)
3
/h) or
3
/h)
3
/h)
2)
mA
20
-40 0 100
➀
3
/h)
3
/h) or
3
/h)
3
/h)
2)
mA
20
0 100
➀ ➁
and VALUE f HIGH must have the
➂
(e.g. backflow) corresponds to the mirrored
20
4
0 Q
➀ ➁
Endress+Hauser
4
Q
➀
A0001262
4
Q
➀
A0001264
A0001249