Interlocks
Interlocks are required to ensure that the system
is safe to operate. The controller can use internal
or external signals to receive verification that the
conditions the interlocks are monitoring are in a state
that is safe for the system to operate.
Determine how the following interlocks will be used.
The following table shows how to use the Pro
Xpc Auto Controller for each interlock. The table
also explains how to bypass the interlock if the
requirement is being satisfied in another manner.
If other forms of interlock are implemented that
preclude the need to use the controller interlocks, the
controller interlocks can be disabled.
Interlock
Pin
Description
System
Interlock
Input power
cord, Pin 3
(wire 3)
If required, use Pin #3 on the Input Power Connection. See Step 2 in
.
If not required, bypass the interlock by connecting wire 3 to line voltage on the
Input Power cord. The
icon will be displayed.
24VDC
Interlock
Discrete
I/O cable,
pin 19
If required, Pin #19 on the Discrete I/O Cable Connection is used to indicate the
condition of a 0VDC/24VDC signal being used as an interlock. This pin can be
used to connect to an external device, such as a ventilation interlock signal to
the controller. Input signal values are:
0 (0VDC or GND): Interlock not satisfied; electrostatics cannot be enabled
1 (24VDC): interlock satisfied
If not required, apply a constant 24VDC to Pin #19, or see
Disable Controller Interlocks, page 8
.
Symbol A9 on the display screen (see
) will show that
this signal is satisfied.
SAFE
POSITION
Interlock
Discrete
I/O cable,
pin 18
If required, Pin #18 on the Discrete I/O Cable Connection requires 24VDC to be
applied for electrostatics to turn on. Apply only when the applicator is in SAFE
POSITION. See
. If electrostatics are on, removing
24VDC from this pin will not turn off the electrostatics.
If not required, apply a constant 24VDC to Pin #18, or see
Disable Controller Interlocks, page 8
.
Symbol A10 on the display screen (see
) will show that
this signal is satisfied.
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