GAELCO Ring Riders, Operator'S Manual

Page: 46 / 95

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GAELCO - RING RIDERS
9.9.1 EMERGENCY STOP
To check the emergency stop circuit, enter the INPUT / OUTPUT screen in Test Mode and
select the option
Emergency Stop : if the red knob is in the rest position (circuit closed,
movement possible), the message will read OFF . When the red knob is pressed, the
message will change to ON (motion system disabled). When the knob is turned clockwise,
the movement system is ready to operate again.
Actually, the emergency stop button activates two circuits: one runs through the CPU and
only serves to give a screen warning that the button has been pressed. The other circuit is
the real emergency stop, which does not run through the CPU but acts directly on the
frequency converter which drives the AC motor. So, in despite of the message delivered
by the CPU, a problem could lie in the direct circuit. To check whether this is the case,
select the
Motion Test from the MOTION SYSTEM screen while in Test Mode. If there’s
no motion, select the option Check error log and check the error messages.
9.9 SECURITY SYSTEM
The Commander SE has a security loop that goes through an emergency stop switch and
two micro-switches installed on the front footrests. If the emergency button is pressed, or
any of the footrest switches are released, the “ready” input of the Commander drops to 0V
and the motor does not receive any current.
When the CPU performs the Motion Test , the opto coupler bypasses the footrest switches
(Safety stop).