User guide

3-8 Safety
Integrated Safety Systems
Your Century C-721 system offers the safety features described below.
Safety Interlock System
CAUTION! Do not use the Safety Interlock to stop the dispensing machine during
normal operation. It is a built-in safety feature to prevent access to the
dispensing area while the dispensing program is running. Opening the
doors during dispensing may ruin the board.
Interlock is a key-activated safety device located on the Control Panel, designed to restrict access to the
inside of the dispensing system, based on user classification. A key-activated switch operates the Safety
Interlock system. Depending on the Safety Interlock mode, ON or OFF, access for certain operations is
limited as the door sensors activate the Safety Interlock system. Once an Interlock safety mode is
selected, the key can be removed to prevent an inadvertent mode change.
TIP It is recommended that before opening the doors, you select Pause in the FmNT Run
Window
. The current dispensing instruction will be completed and then the dispensing
system will stop. To resume dispensing, close the doors and press
Pause again. This
way, the fluid pump will not be shut off and the dispensing will start where it left off,
causing no board damage.
ON (I) When the Interlock is ON, you can open the front doors after pressing
Pause (on the Dispenser
Control Panel or from within FmNT) and waiting for all motion to stop. When the green Interlock
Recovery LED turns OFF, you can safely open the doors. To resume dispensing, close the doors, then
press
Pause again.
If you open the doors without first pressing
Pause, motion will stop and all position references will be
lost. This interlock shutdown condition is indicated by a red LED on the Control Panel and by a red
“abort” status light on the .
OFF (0) This is BYPASS mode. The yellow beacon turns ON when the Interlock is OFF. Both the
yellow Light Beacon light and yellow
Dispenser Status LED are ON when Interlock is OFF. In this
state, opening the doors does not halt the dispensing system motion.
CAUTION! Do NOT use Interlock OFF mode during normal operation. Use OFF mode
only when servicing or programming the dispensing system.
Safety Interlock Recovery Light
The Safety Interlock Recovery Light is located on the Control Panel to the left of the Dispenser Status
LED (see Tables 3-3 and 4-5).