Unipulse F805AT-BC, Operation Manual

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8.INTERFACE
124
8-4. D/A Converter [DAC]
The D/A converter provides F805AT-BC with the capability of sending internal
arithmetic data to the external devices using 4-20mA analog signal.
This analog signal ranges from zero (4mA) to full scale (20mA) as specified by two
parameters [D/A ZERO OUTPUT WEIGHT] and [D/A FULL SCALE VALUE].
Output terminal is electrically isolated from the internal circuit using a photo-coupler.
The D/A converter has 16-bit resolution and capable of 200 conversions per second.
This output is capable of over-range output (approx. ±10% FS).
Using the D/A converter, external pulse train is representing the belt speed which is
used as parameters for types of comparisons and readings.
8-4-1. External output port
Pin assignment
Source supply for external device
This output port provides power voltage for speed detecting devices such as a rotary
encoder. Power voltage is +12V, and capable of sourcing up to 160mA (6-pin).
Cur
rent [
m
A
]
0
25
50
75
100
Calculated value
Output [%]
4
8
12
16
20
D/A zero output D/A full-scale
1
＋ (ch1)
8
＋ (ch2)
2
－ (ch1)
9
－ (ch2)
3 10
4 COM 11 COM
5 COM 12 COM
6 +12V 13 B-phase
7 Z-phase 14 A-phase
Note:
When used with F805AT-BC, pin No. 3 and 10 is not used and should
remain open. Applying external voltage to, or shorting these terminals may
result in failure/damage in the external device or F805AT-BC.