Application Example Of Hwbb Function - YASKAWA UAK series User Manual

8.8.11 Application Example of HWBB Function

An example of using HWBB function is shown below.
(1) Connection Example
Guard
24-V power
supply
0 V
When a guard opens, both of signals, the /HWBB1 and the /HWBB2, turn OFF, and the EDM
Since the feedback is ON when the guard closes, the device is reset, and the /HWBB1 and the /HWBB2 sig-
nals turn ON, and the operation becomes possible.
Note: The EDM
EDM1- or EDM2+ to EDM2-.
(2) Failure Detection Method
In case of a failure such as the /HWBB1 or the /HWBB2 signal remains ON, the device is not reset when the
guard closes because the EDM
detected.
In this case, an error in the external device, disconnection or short-circuiting of the external wiring, or a failure
in the SERVOPACK must be considered. Find the cause and correct the problem.
Close
Limit switch
Open
A1 T11 T12 T21 T22
Input
Power
supply
input
A2 T31 T32 T33
signal is used as a sourcing output. Connect the EDM
signal keeps OFF. Therefore starting is impossible, then the failure is
8.8 Hard Wire Base Block (HWBB) Function
Device
manufactured
by OMRON Corp.
G9SX-BC202
Output
Σ-V-SD driver
S24 S14
/HWBB1+
/HWBB1-
/HWBB2+
/HWBB2-
EDM +
EDM -
so that the current flows from EDM1+ to
signal is ON.
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