Hitachi WJ200-001L, Instruction Manual

Page: 290 / 680

4

83
Window Comparator for Analog Inputs
The window comparator function outputs signals when the value of analog inputs [O]
and [OI] are within the maximum and minimum limits specified for the window
comparator. You can monitor analog inputs with reference to arbitrary levels (to find
input terminal disconnection and other errors).
Refer to chapter 3 for detailed information.
Option
Code
Terminal
Symbol
Function Name State Description

WCO Window comparator for
analog voltage input
ON [O] input is inside of the window comparator
OFF [O] input is outside of the window comparator

WCOI Window comparator for
analog current input
ON [OI] input is inside of the window comparator
OFF [OI] input is outside of the window comparator
Valid for inputs:
11, 12, AL0
– AL2
Example for terminal [11] (default output
configuration shown
– see
page 3-89 ):
Example for terminal [AL0], [AL1], [AL2] (requires
output configuration
– see
page 4-51 and 3-91 ):
See I/O specs on
page 4-6
Required settings

~

,

,

Notes:
- Output values of ODc and OIDc are the same as
those of WCO and WCOI, respectively.
RY
Inverter output
terminal circuit
CM2 11
WCO
AL1
Power
supply
Load
AL0 AL2
Inverter logic
circuit board WCO