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Chapter 3 Function and Performance Specifications
3-14
3.3.8 Potentiometer Analogue Input Specifications
Number of potentiometer inputs 2
Stored in
Ch.1 : WRF03E, Ch.2 WRF03F
Input range 0-1023 (H0-H3FF)
Resolution 10 bits
Input filter By user settings
3.3.9 Interrupt Input Specifications
Input that can be used X1, X3, X5, X7 (by user settings)
ON 15 VInput voltage
OFF 5 V
3.3.10 Backup
(1) Battery
Data memory (retentive area) can be kept by EH-MBAT battery as below.
Battery life time (total power off time) [Hr] *
Guaranteed value (Min.) @55°C Actual value (Max.) @25°C
9,000 18,000
* Battery life time has been changed since Oct. 2002 production (MFG NO.02Jxx) due to hardware modification.
Battery can be mounted inside of front cover.
Battery is available only for 23-point and 28-point types.
If the calendar clock function is used with the 23-point or 28-point type, be sure to use the battery.
(2) Capacitor
14-point type: Data can be kept for 72 hours (at 25 °C) by the capacitor.
23 and 28-point types: Data can be kept for 24 hours (at 25 °C) by the capacitor.
Please note that data memory of 10 point type cannot be retained.
3.3.11 Expansion
• Up to 4 times of expansion units can be installed.
• 14 points and 28 points digital units, and 4ch. input / 2 ch. output analog expansion units available.
• A cable with a length of up to 1 m can be used to connect between units.
• The total extension cable length can be up to 2 m (from the basic unit to the expansion unit at the end).
• The 10-point type unit cannot be expanded.