Analog Input Circuit - YASKAWA JANCD-YEW01-E Instructions Manual

Interface Board for Welding
Power Supply
6.2
6 Analog I/O Circuit

6.2 Analog Input Circuit

Analog Input Circuit
Two analog input circuits (channel 1 for voltage feedback, and channel 2
for current feedback) are available.
• The input voltage must be within -5 V to +5 V.
NOTE
• Use shielded twisted-pair wires (24 to 28 AWG) for the
analog input wiring, and make the wiring length as short
as possible.
Number of channels and
application
Output range
Digital resolution
LSB value
D/A output voltage error
Linearity error
Conversion cycle
1)
Conversion time
Input impedance
1 Includes the delay of 50 μs from the input to the A/D converter.
Fig. 6-2: Example connection
YEW01 side
Input CH1 Filter
Input CH2 Filter
0 V
(Analog ground)
6-2
2 channels for voltage output
-5 V to +5 V
16 bit
-6
Approx. 153 μV (153 × 10
±0.5% full scale
±5LSB
Convert designated channel per every 2 ms.
Maximum 60 μs
Equal to or more than 1 MΩ
2-1
A/D
Selector
Switching signal
HW1481264
167646-1CD
V/bit)
A/D conversion output
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