Yokogawa Standalone MW100 - Manual (Page 65)

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IM MW100-01E
Explanation of Functions
1
2
3
4
5
App
Index
1.10 Functions of the 10-CH, High-Speed Digital
Input Module
The “-D05” module is equipped with ten inputs for measurement of non-voltage contact,
open collector, and 5 V logic inputs at a minimum measurement interval of 10 ms.
The “-D24” module is equipped with ten inputs and measures 24-V logic inputs at a
minimum measurement interval of 10 ms.
Input terminal (clamp terminal)
Terminal cover
Measurement Input Types
Measurement Input Type Notation
No measurement SKIP
Digital DI
Measurement Range
DI (MX115-D05)
Measurement Range Type Notation Rated Measurement Range
LEVEL LEVEL OFF at 1 V or less and ON at 3 V or more
Contact input CONTACT 100 Ω or less, ON, 100 kΩ or less, OFF
DI (MX115-D24)
Measurement Range Type Notation Rated Measurement Range
LEVEL LEVEL OFF at 6 V or less and ON at 16 V or more
Measurement Interval
Select 10 ms, 50 ms, 100 ms, 200 ms, 500 ms, 1 s, 2 s, 5 s, 10 s, 20 s, 30 s, or 60 s.
Filters
The module detects ON/OFF as shown below to prevent the effects of chattering. If
the measurement interval is set a value greater than four times the chattering period,
measurement is possible by avoiding chattering effects.
• Measurement interval of 5 s or less: Use the wider of the ON/OFF width of the
detection period (approximately 75% to 90% of the measurement interval)
Detection
interval
Measurement
interval
Detection
interval
Measurement
interval
Measurement
interval
Detection
interval
Detection interval =
Measurement interval × 75% to 90%
Chattering
• Measurement interval of 5 s or more: Use the wider of the ON/OFF width of
approximately 4.5 s