Two-Hand Control Type Iiia - Mitsubishi Electric WS0-CPU0 Operating Manual

Figure 191:
Function block diagram for
the Two-hand control type
IIIA function block
Table 89:
Parameters of the Two-hand
control type IIIA function
block
Figure 192:
Function block diagram for
the Two-hand control type
IIIC function block
ATTENTION
Logic programming – Function blocks
9.9.9

Two-hand control type IIIA

Function block diagram
General description
The Two-hand control type IIIA function block is a predefined function block for two-
hand control sensors for which discrepancy time monitoring on equivalent inputs is
required. The discrepancy time monitoring is used to monitor the synchronous
actuation of two-hand circuits of type IIIA in the context of EN 574.
The internal logic of the Two-hand control type IIIA function block corresponds to the
functionality of the Emergency stop function block, only with a limited parameter
selection. The function block allows graphic differentiation in accordance with the
application.
Input A and Input B form a dual-channel evaluation and must be equivalent. When
the evaluation of the inputs is High, the Enable output is High (see Section 9.9.2).
The discrepancy time is set to 500 ms (the discrepancy time is fixed and cannot be
changed).
Parameters of the function block
Parameter
Inputs
Discrepancy time
Number of outputs
Use fault present
9.9.10 Two-hand control type IIIC
Function block diagram
General description
The Two-hand control type IIIC function block provides the logic for monitoring the
inputs of a two-hand control in accordance with EN 574/ISO 13851.
Use the Two-hand control type IIIC function block only in combination with a
WS0-XTIO or a WS0-XTDI module!
The Two-hand control type IIIC function block requires the usage of a WS0-XTIO or a
WS0-XTDI module. Otherwise the requirements of EN 574/ISO 13851 are not fulfilled.
Possible values
Fixed value: Dual channel equivalent
Fixed value: 500 ms
(equivalent to the discrepancy time according to EN 574)
 1 (Enable output)
 2 (Enable output and Discrepancy error output)
 With
 Without
Chapter 9
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