Printer 800 Safety Features.pdf - 第6页
SAFETY FEA TURES EMERGEN CY SHUTDOWN 2.6 Installatio n Manu al Chapter I ssue 1 Jul 03 EMERGENCY SHU TDOWN The machine i s fitt ed with an emer gency stop push button c ontrol switc h (E S top). The E S top switch, once …
SAFETY FEATURES
MACHINE SAFETY FEATURES
Chapter Issue 1 Jul 03 Installation Manual 2.5
Two Button
Control Switches
Located on the upper side panels, either side of the printhead cover, are the two
button control switches or jog switches. These buttons are positioned such as
to maintain maximum safety for the operator whilst solvent priming or paper
feeding with the printhead cover open. This requires both buttons to be
depressed simultaneously for the function to become active. The use of these
buttons is dependent on the function selected on the machine monitor. During
normal operation these buttons control paper feed and solvent prime opera-
tions. When in maintenance mode the two buttons also control the following
diagnostics:
• Print Carriage
• Squeegee Assembly
• Camera Axes
• Rail System
• Screen Align
• Rising Table
•ProFlow
Only one button is required to drive the selected mechanism, the two buttons
are used to drive the mechanism in opposite directions, ie jog forward or jog
back.
Figure 2-1 Two Button Control Locations
Left Jog Button Right Jog Button
SAFETY FEATURES
EMERGENCY SHUTDOWN
2.6 Installation Manual Chapter Issue 1 Jul 03
EMERGENCY SHUTDOWN
The machine is fitted with an emergency stop push button control switch (E
Stop). The E Stop switch, once pressed, is a latching switch and requires
resetting. To reset the E Stop, turn the button clockwise until it unlatches.
Pressing the E Stop or raising the printhead cover cuts the servo axes power
supply. A warning of this condition is reported on the machine monitor.
Figure 2-2 Emergency Stop Push Button Control Switch (E Stop)
E Stop
System Button
SAFETY FEATURES
EMERGENCY SHUTDOWN
Chapter Issue 1 Jul 03 Installation Manual 2.7
E Stop Module
Shut Down
If the E Stop loop is opened by pressing the E Stop or opening the printhead
cover, an emergency stop is initiated via the E Stop module. When actuated
the following areas of the machine are rendered inactive:
•Lid Bolt
• Moving Rail Stepper
• Print Carriage Servo (axis stopped before power is removed)
• Paste Cartridge Tilt Up/Tilt Down Motor
• Paste Dispense Solenoid and Stepper Motor
• Rail System Front and Rear Belt Motor Drives
• Rising Table Brake (brake engages when power is cut)
• Rising Table Servo
• Squeegee/ProFlow Stepper Motor(s)
•System Lamp
• Underscreen Cleaner Paper Feed Motor
• Underscreen Cleaner Solvent Pump
• Underscreen Cleaner Squeegee Solenoid
• Vacuum Tooling Solenoid
• X Camera Motor (axis stopped before power is removed)
• X Forward, X Rear and Y Chase Alignment Stepper Motors
• Y Camera Motor (axis stopped before power is removed)
The safety circuits have been designed to conform to EN954 Category 2 and
checks for welded contacts before resetting. Additional safety is achieved by
duplication of the power contactors to provide redundancy.
Recovery When normal working conditions are restored, release the emergency stop
button and press the system button when prompted.