Proline Promass 83E/F/O Description of Device Functions - FMC ...
Proline Promass 83E/F/O Description of Device Functions - FMC ...
Proline Promass 83E/F/O Description of Device Functions - FMC ...
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7 Block OUTPUTS <strong>Device</strong> <strong>Functions</strong> <strong>Proline</strong> <strong>Promass</strong> 83<br />
Function description<br />
OUTPUTS CURRENT OUTPUT (1...3) CONFIGURATION<br />
VALUE 0_4 mA<br />
(continued)<br />
Parameter setting example A:<br />
1. VALUE 0_4 mA (4002) = not equal to zero flow (e.g. –5 kg/h)<br />
VALUE 20 mA (4003) = not equal to zero flow (e.g. 10 kg/h) or<br />
2. VALUE 0_4 mA (4002) = not equal to zero flow (e.g. 100 kg/h)<br />
VALUE 20 mA (4003) = not equal to zero flow (e.g. –40 kg/h)<br />
and<br />
MEASURING MODE (4004) = STANDARD<br />
When you enter the values for 0/4 mA and 20 mA, the working range <strong>of</strong> the measuring<br />
device is defined. If the effective flow drops below or exceeds this working range<br />
(see Fig. m), a fault/notice message is generated (#351-354, current range) and the<br />
current output responds in accordance with the parameter settings in the function<br />
FAILSAFE MODE (4006).<br />
1) mA<br />
2) mA<br />
20<br />
4<br />
20<br />
4<br />
Q<br />
Q<br />
-5 0 10 -40 0 100<br />
➀ ➀ ➀ ➀<br />
Parameter setting example B:<br />
1. VALUE 0_4 mA (4002) = equal to zero flow (e.g. 0 kg/h)<br />
VALUE 20 mA (4003) = not equal to zero flow (e.g. 10 kg/h) or<br />
2. VALUE 0_4 mA (4002) = not equal to zero flow (e.g. 100 kg/h)<br />
VALUE 20 mA (4003) = equal to zero flow (e.g. 0 kg/h)<br />
and<br />
MEASURING MODE (4004) = STANDARD<br />
A0001262<br />
When you enter the values for 0/4 mA and 20 mA, the working range <strong>of</strong> the measuring<br />
device is defined. In doing so, one <strong>of</strong> the two values is configured as zero flow<br />
(e.g. 0 kg/h).<br />
If the effective flow drops below or exceeds the value configured as the zero flow, no<br />
fault/notice message is generated and the current output retains its value.<br />
If the effective flow drops below or exceeds the other value, a fault/notice message is<br />
generated (#351-354, current range) and the current output responds in accordance with<br />
the parameter settings in the function FAILSAFE MODE (4006).<br />
1) mA<br />
20<br />
2) mA<br />
4 20 4<br />
Q<br />
Q<br />
0 10<br />
➀<br />
0 100<br />
➀<br />
A0001264<br />
Deliberately only one flow direction is output with this setting and flow values in the<br />
other flow direction are suppressed.<br />
Parameter setting example C:<br />
MEASURING MODE (4004) = SYMMETRY<br />
The current output signal is independent <strong>of</strong> the direction <strong>of</strong> flow (absolute amount <strong>of</strong> the<br />
measured variable). The 0_4 mA value m and the 20 mA value n must have the same<br />
sign (+ or-). The “20 mA VALUE” o (e.g. backflow) corresponds to the mirrored 20 mA<br />
VALUE n (e.g. flow).<br />
mA<br />
20<br />
4<br />
0<br />
➂ ➀ ➁<br />
Q<br />
A0001249<br />
ASSIGN RELAY (4700) = FLOW DIRECTION<br />
With this setting e.g. the flow direction output via a switching contact can be made.<br />
Parameter setting example D:<br />
MEASURING MODE (4004) = PULSATING FLOWpage 68 ff.<br />
Page 66 • MN0M023<br />
Issue/Rev. 0.2 (12/12)