SAFE POSITION
SAFE POSITION is defined as a position where
the gun electrode is at least 8 inches away from
any grounded object. While many such positions
may exist, one position should be selected as the
applicator SAFE POSITION.
SAFE POSITION has several inputs and outputs that
affect other portions of the system:
• Safe-to-Move Discrete I/O cable Output: This is
generated when the controller has determined that
the gun electrostatics are ready for application and
that the applicator can move freely.
• SAFE POSITION Interlock Input: This is generated
within the controller or through external SAFE
POSITION Interlock on pin 18 of the Discrete I/O
cable.
• Arc detection blanking time parameter C1: Arc
detection is deactivated during the blanking time.
This setting will limit the length of time before arc
detection is enabled.
When the applicator is in the SAFE POSITION (the
location in which it is safe to turn on electrostatics),
its control system (robot, PLC, etc.) applies the
SAFE POSITION Interlock input of 24VDC on the
Controller Discrete I/O cable. This will satisfy the
SAFE POSITION Interlock in the Pro Xpc Auto
Controller and allow the electrostatics at the gun to
be enabled by the Pro Xpc Auto Controller. After
the arc detection blanking time has passed, the
Safe-to-Move output tells the applicator control
system that the applicator is now able to leave the
SAFE POSITION. When the applicator leaves the
SAFE POSITION, the SAFE POSITION Interlock is
removed, which leaves it not satisfied. This does
not disable the electrostatics. If the electrostatics
are turned off, the robot needs to return to the
SAFE POSITION and reapply the SAFE POSITION
Interlock input in order to turn electrostatics on.
SystemInterlock Input
REMOTE Enable/Disable
24VDC Interlock Input
Electrostatics Enable Input
SAFE POSITION Interlock
Input
Electrostatics
Safe-to-Move Output
t
C1
:Time as set by parameter C1
26
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