SD34002g_e.doc / Sep-13
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4.3. Sum Mode (encoder 1 + encoder 2): F02.004 = 2
Both inputs, encoder 1 and encoder 2, are active. From both values the unit forms the sum, with
consideration of the individual scaling of each channel. The final result can once more be
scaled into user-friendly engineering units by means of the special scaling parameters in
parameter group F02.
Besides the actual speeds and the sum value, the unit also records minimum and maximum
values of the sum.
Preset K1 is related to the absolute speed of encoder 1.
Preset K2 is related to the absolute speed of encoder 2.
Presets K3 and K4 are related to the actual sum of the speeds (encoder 1 + encoder 2)
Display
L1 (red)
L2 (yellow)
1
Actual sum [speed encoder1] + [speed encoder2]
statically ON
statically ON
2
Minimum sum value since last min/max reset
blinking slow
blinking slow
3
Maximum sum value since last min/max reset
blinking fast
blinking fast
4
Actual measuring value of encoder 1
statically ON
---
5
Actual measuring value of encoder 2
---
statically ON
Encoder 1
Encoder 2
1 2 3 4 5 6
2 x incremental flow sensors
Q
1
Q
2
Example: Summing flow Q
1
+ Q
2
(liters per minute) of two incremental rotary flow sensors
