Satake Scan Master II - Ejector Interface Pcb; Ejector Testing; Reset LED; Computer

Section 2-- Identification and Function of Parts 2-39
© 2008, Satake USA Inc.
(ALL RIGHTS RESERVED)
Test Point
Function
TP1 Primary Light Trip Voltage
TP2 Primary Dark Trip Voltage
TP3 Resort Light Trip Voltage
TP4 Resort Dark Trip Voltage
2.16 EJECTOR INTERFACE PCB (See Figure 2-22)
The Ejector Interface PCB is the control center for setting the Ejector Delay and
Ejector Dwell.
2.16.1 EJECTOR TESTING
A test circuit is provided to test the ejectors, either individually or eight at a time, at
four different frequencies. Switch SW3 turns the test circuit on when it is moved to
the center (on) position. LED DS1 will illuminate Green when the Ejector Test
function is active.
Momentarily placing switch SW3 in the up position selects the next higher numbered
ejector or group of ejectors.
Pushwheel switch SW4 positions 1 through 8 will permit individual testing of the
ejectors associated with that chute. This is helpful when listening to the sound
produced by individual ejectors to determine if one sounds distinctly different than
others. SW4 position 9 will cause one ejector for each chute to be tested
simultaneously with the corresponding ejectors for the other seven chutes. This
method provides a quick means of testing ejectors when feeling the air blast from
ejectors by hand.
In testing ejectors, when the testing has sequenced through all ten ejectors, further
sequencing will cause the frequency to change to the next higher of the four
frequencies. After the highest frequency is reached, further sequences will start
over at the lowest frequency. Holding switch SW3 in the up position will
automatically sequence from one ejector to the next.
After testing, switch SW3 must
be placed in the OFF position before the feeders will
run and sorting can begin.
2.16.2 RESET LED
The Reset LED (DS2) will illuminate red when power to the machine is turned on and
will go off almost immediately. A steady red light of the RESET LED indicates a
possible problem with the Ejector Interface PCB.
2.16.3 COMPUTER
The COMPUTER LED (DS3) will light Green when the Ejector Interface PCB has
detected that the control computer is active and communicating with the Ejector
Interface PCB.