Hitachi WJ200-001S Instruction Manual page 290

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 Terminal
Code Symbol

WCO Window comparator for
analog voltage input

WCOI Window comparator for
analog current input
11, 12, AL0 – AL2
Valid for inputs:
~, ,
Required settings
Notes:
- Output values of ODc and OIDc are the same as
those of WCO and WCOI, respectively.
Function Name State
ON
OFF
ON
OFF

Description
[O] input is inside of the window comparator
[O] input is outside of the window comparator
[OI] input is inside of the window comparator
[OI] input is outside of the window comparator
Example for terminal [11] (default output
configuration shown – see
Inverter output
terminal circuit
CM2
Example for terminal [AL0], [AL1], [AL2] (requires
output configuration – see
Inverter logic
circuit board
AL0 AL1
Power
supply
See I/O specs on page 4-6
483
page 3-89):
WCO
11
RY
page 4-51 and 3-91):
WCO
AL2
Load