SD34002g_e.doc / Sep-13
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4.4. Differential Mode (encoder 1 - encoder 2): F02.004 = 3
Both inputs, encoder 1 and encoder 2, are active. From both values the unit forms the
difference, 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 differential value, the unit also records minimum and
maximum values of the speed difference.
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 differential speed (encoder 1 - encoder 2)
Display
L1 (red)
L2 (yellow)
1 Speed difference [speed encoder1] - [speed encoder2]
statically ON
statically ON
2 Minimum difference since last min/max reset
blinking slow
blinking slow
3 Maximum difference since last min/max reset
blinking fast
blinking fast
4 Actual measuring value of encoder 1
statically ON
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5 Actual measuring value of encoder 2
---
statically ON
Encoder 1
- 3 4 .5 6
Cont.1
Cont.4
Encoder 2
Remote control functions
speed 1
speed 2
Example: Differential speed of two belt conveyors