Safety Controls
3-11
KVAL 990-FX Operation Manual
Safety Controls
Emergency Shutdown and Recovery
Emergency shutdown (E-Stop) switches located at key points around the
machine.
Operate the E-Stop switches when the machine is out of control or is about
to injure personnel or damage equipment.
When an E-Stop switch is activated, high voltage power is cut to the
machine. The motors will stop but power to the PLC and the Operator Sta
-
tion Screen will remain on.
Note:
The machine responds in the same way as pressing the STOP button on the operator's station.
To Resume Normal Operation after an E-Stop
If an E-Stop is activated, use the following procedure to recover, after the cause of the
emergency stop is resolved:
1.
De-activate the E-Stop switch by pulling it out.
2.
Push the
START MACHINE
button on the operator's station
3.
Press the
Reset Light Curtain Buttons
on the Feeder and Stacker
About the Light Curtain
The
Safety Light Curtain
provides safety for personnel who enter the defined area when the
machine is active. If any part of an operator’s body is detected in the defined area, the machine
stops the operation.The machine must be reset from the operators station to continue machining.
The
Safety Light Curtain
is composed of an EZ-Screen emitter and receiver. The emitter has a row
of synchronized light-emitting diodes (LEDs) that send signals to the receiver. The receivers have
a a matching row of synchronized photo detectors that read the signal from the emitter. When the
signal is blocked of
any beam,
the machine stops. To continue machining push the
Start
button
Important:
The EZ-Screen system is aligned at the factory. Do not move the emitter or
receiver modules. This may cause misalignment, if the system is mis
-
aligned the machine will not start
If the Beam is Broken
If the beam is broken, the machine will shut down. This is safety feature performs the same func
-
tion as an Emergency Shutdown (E- Stop). For information on the E-Stop function,
