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Introduction
The Reject Confirmation Unit (RCU) on loose product
applications confirms that the reject mechanism has
responded at the correct time. On packaged product
applications the RCU confirms that the contaminated
product has been successfully rejected.
NOTE
The RCU can not be used on stop / start applications
RC Sensor
The RC Sensor should be in one of two positions;
a)
On loose product applications the RC Sensor
should confirm that the reject mechanism
has reached its full reject position.
b)
On packaged product applications the RC
Sensor should confirm that the product has
entered the reject bin.
RCU Settings
Depending on the timer type selected one of two
displays are available to allow the user adjustment.
Timer Types - tm1, tm2 and tm3
The detector needs to be told how long it must wait
from releasing the Reject Mechanism, to receiving a
signal from the RC Sensor. This period plus a small
safety margin is known as the RC Extension time and
must be entered by the user.
4618 - 021
REJECT CONFIRMATION UNIT
.
OPERATING INSTRUCTIONS
The RCU achieves this by knowing when the Reject
Mechanism is to be activated and deactivated.
Following reject deactivation the RCU waits for a
signal generated via the Reject Mechanism or the
rejected product to confirm reject operation. This
signal is produced by a suitably positioned sensor,
called a Reject Confirmation (RC) Sensor.
NOTE
Remember to record all settings on the settings sheet
at the rear of the manual.
This arrangement is not practical with all packaged
products. Certain pillar packs and pouches could not
be reliably sensed entering the reject bin. If the pack
type makes the sensing of it questionable, then the
RC Sensor should be positioned as in a).
The RC Sensor under normal running conditions
should have its output in a LOW state and change to
a HIGH state when;
a)
on packaged product applications a rejected
pack obscures the sensor or
b)
on loose product applications the reject
mechanism has reached its full reject
position.
105
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