Override Function (Only St4-C12Ex) - Panasonic ST4 Instruction Manual

Panasonic ST4 Instruction Manual

3.7 Override Function (Only ST4-C12EX)

The override function is incorporated only in ST4-C12EX.
It forcibly turns off the safety function of ST4-C12EX. This function enables you to override the
machine stop signal and to enter the muting state. It is used to restart the system smoothly
without removing the objects from the production line when the sequence of operations is
incorrect or in case of a power loss.
The override function is used when the muting function is active, something happened which
stopped the operation and the operation then needs to be restarted again with the control output
(OSSD 1/2) in OFF status.
!
NOTE
The muting function complies with the requirements defined in the following
international standards:
-
SEN TRONIC
AG
Produkte, Support und Service
DANGER!
Incorrect use of the muting function may cause accidents. Please
study the muting function carefully before you use it.
Use the muting function while the machine cycle is not in danger
mode. Maintain safety by using other measures while the muting
control is activated.
For applications where the muting function is used when a work
piece passes through, place the muting sensors at such a distance
so that personnel do not accidentally activate the muting function.
Be sure to check that the muting function is working properly before
you use it in live operation. Check the state of the muting lamp for
cleanliness, brightness, etc.
Always connect a muting lamp and use the preset muting lamp
diagnosis function (see page 74).
Install the muting lamp in a position where it can always be seen by
operators who configure or adjust the machine.
When the override function of ST4-C12EX is active, the sensing area
of the ST4-A□ can be intruded. If multiple sensing areas exist, make
sure to install muting lamps in each sensing area. For all the sensing
areas there must be a signal to prevent operators from entering into
it. Failure to do so may allow operators to enter into the sensing
areas, which could result in serious injury or death.
ISO 13849-1 (EN 954-1/JIS B 9705-1): 'Safety of machinery - Safety-related
parts of control systems - Part 1: General principles for design, Article
5.9 Muting'
Rugghölzli 2
CH - 5453 Busslingen
3.7 Override Function (Only ST4-C12EX)
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