2.8 Machine Safety
The PAMIO module type 4ENC4A (and only this one) provides
specific safety connectors. The following instructions apply only
when these modules are part of the PAMIO components configura-
tion.
For information on the machine's safety devices
and emergency stop chain see the manual pro-
vided by the CNC machine's manufacturer. The
manufacturer of the CNC machine is responsible
for the proper installation of the emergency stop.
2.8.1 'CNC ready' signal - Emergency stop inter-
locking
DANGER!
Injuries due to uncontrolled operation!
An inactive 'CNC Ready' signal represents a safety
related situation. The "CNC Ready" relay is
switched off when the PA CNC control unit is in a
situation where the axes' movements are not con-
trolled.
As the axes may continue to move in an uncon-
trolled manner, the contacts of the "CNC Ready"
relay must be used to disconnect the machine's
emergency stop safety chain. All actions neces-
sary for safety must be executed in the same way
as when the Emergency Stop button is pushed.
n Properly integrate the 'CNC ready' relay into the machine's
emergency stop chain.
All safety related actions must ensure that at least all axes
movements and spindle rotation (or beam power) are stopped as
quickly as possible.
n Refer to the drive manufacturer manual, to determine the best
way of stopping movements and other dangerous power on the
machine.
n If drive capability does not exist, the use of external braking
resistors might be necessary.
Unbalanced axes have to execute with the mechanical brake.
The contacts for 'CNC Ready' and 'Power OK' are available on
connector X19.
Further Applicable Documents
Personal Injury
PA 8000 PAMIO
Safety
12.01.2017 | 17
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