Omron MX2 Series - Window Comparator (WCO;WCOI) (Disconnection Detection Odc;Oidc)

7 Other Functions
7 - 91
Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
The window comparator signal will be output when the analog input O/OI value is between the upper
and lower limit settings. It is useful for monitoring the analog input at a level to detect disconnection or
other faults.
The hysteresis width can be set for the upper and lower limit level settings for the window comparator
function.
In addition to the hysteresis width, the upper and lower limit levels can be set individually for each of the
analog input signals O and OI.
The analog operation level during WCO/WCOI output can be set to a fixed value. To do so, set the
Analog Operation Level at O/OI/FE Disconnection (b070/b071). When set to no, the analog input value
will be used “as is.”
The signals ODc and OIDc will be output in the same way as WCO and WCOI, respectively.
Parameter
No.
Function name
Data range
Default
data
Unit
b060
Window Comparator O
Upper Limit Level
Lower limit level + Hysteresis width  2
(0. min.) to 100.
Set an upper limit level.
100.
%
b063
Window Comparator OI Upper
Limit Level
b061
Window Comparator O
Lower Limit Level
0. to Lower limit level − Hysteresis width 
2 (100. max.)
Set a lower limit level.
0.
%
b064
Window Comparator OI Lower
Limit Level
b062
Window Comparator O Hys-
0. to (Upper limit level − Lower limit level)
teresis Width
 2 (10. max.)
Set a hysteresis width for the upper and
0.
%
b065
Window Comparator OI Hys-
teresis Width
lower limit levels.
b070
Analog Operation Level at O
Disconnection
0. to 100.
255: no (Disabled)
Set the analog operation level during
WCO/WCOI (ODc/OIDc) output.
no
%
b071
Analog Operation Level at OI
Disconnection
Multi-function Output 11/12
27: ODc (Analog O disconnection
detection)
28: OIDc (Analog OI
disconnection detection)
54: WCO
(Window Comparator O)
55: WCOI
(Window Comparator OI)
C021
C022
C026
Selection
Multi-function Relay Output
−
−
(AL1, AL2) Function Selection
Note Set the upper and lower limit level settings for the window comparator function as a percentage [%] of the
input voltage (10 V) or current (20 mA).
7-8-20 Window Comparator (WCO/WCFI) (Disconnection Detection
ODc/FIDc)