CAB MAESTRO 5L Operator's Manual - page 12
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4
Sensors
4.2
Extended Function
Figure 9 Sensors
The integration of the MAESTRO 5L into a PCB production line will extend the function of the sensors. The interface
signals will be controlled by interpreting the sensor signals. The interface signals report the readiness of the separator
to receive and deliver PCBs respectively to adjacent devices.
4.2.1. Coupling the MAESTRO 5L to a supply device (SMEMA interface)
Sensor 2 (4)
When a penalized PCB from a supply device arrives at the sensor, the SMEMA signal for the takeover readiness will
be switched off and a 20 second timer is then started.
After the 20 second timer, the MAESTRO 5L will be in the takeover readiness mode again unless the sensor is inter-
rupted (by a PCB).
In this case an error 5 message will occur.
The sensor 2 also checks to see whether or not a PCB arrives at the sensor 20 seconds after seeing the prior PCB.
In the event a new PCB is not supplied to the separator and therefore not detected by the sensor, the yellow warning
light will be switched on.
Sensors 3 and 4 (5/6)
The SMEMA signal for the takeover readiness will be switched on if a panel from a supply device leaves sensor 3 and
sensor 4 is not active (see programming section).
A timer will be started when a panel from a supply device leaves sensor 3 and sensor 4 is active (see programming).
After the 20 seconds, the switch state of sensor 4 will be checked. The SMEMA signal for takeover readiness will be
switched on if sensor 4 is free.
4.2.2. Coupling the MAESTRO 5L to the optional Conveyer Belt
Sensor 4 (6) / Conveyer belt sensor (7)
At the end of the optional conveyer belt is another laser edge sensor (7). If this sensor is free, the conveyer belt will
be started for a defined period of time after a panel is detected at sensor 4 (6). When a second panel is detected at
sensor 4 (6) the time will be extended.
The conveyer belt stops when a PCB is sensed by the conveyer belt sensor (7). When the conveyer belt stops, the
MAESTRO 5L receives a signal that informs that the conveyer belt is not ready to take over more PCBs. At this point,
the main drive of the separator will be stopped when a PCB arrives at sensor 4 (6).
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