Two-Hand Control - Mitsubishi MELSEC-WS0-CPU0 User Manual

Chapter 4
Note
Table 26:
Connection of two-hand
control
Table 27:
Functions with two-hand
control unit type IIIA
51
Connecting devices
4.1.4

Two-hand control

The contact symbols in this chapter show the switching status while both two-hand
buttons are not pressed.
Electrical connection: Example from Setting and Monitoring Tool with WS0-XTIO
Type IIIA
connected to 24 V
Type IIIC
connected to 24 V
Type IIIA
At Type IIIA two equivalent inputs (NO contacts of the two two-hand buttons) are
monitored.
A valid input signal is only generated if the ON state (High level) exists at both inputs
within a period of 0.5 s (synchronous change, both two-hand buttons pressed) and if
both were in the OFF state (Low level) beforehand.
Function
Tested
Series connection/
cascading
Discrepancy time
Channel 1: Contact between 24 V and I1
Channel 2: Contact between 24 V and I2
Channel 1: Left side NO contact between 24 V and I1
Channel 2: Left side NC contact between 24 V and I2
Channel 3: Right side NO contact between 24 V and
I3
Channel 4: Right side NC contact between 24 V and
I4
Possible
Not possible
Fixed Value: 500 ms
See Two-hand control type IIIA function block in the logic in the
CPU module with which these inputs are to be evaluated.
Notes