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Model IC
Controls for the IC are usually combined with the sampler controls . A signal is sent to a relay in the IC junction box,
starting the motor . The relay signal is held until feedback from the position proximity switch indicates the table has
moved to the next position . At this time the relay signal is terminated and the motor stops . Capacitors located in the IC
junction box are switched to the motor, serving a braking function .
A proximity switch is located near the door of the IC . At any time the door is opened, operation is immediately
stopped . Operation of the sampler should also be halted when the IC door is open .
Indexing of the table can occur one of three ways:
ƒ Automatically as determined by the controller
ƒ Manually when indicated through the controller's display
ƒ Manually when the pushbutton is pressed on the IC junction box
Automatic indexing of the table is performed when the number of samples taken for a jar equals a preset value . After a
sample is taken, a delay period should be initiated to allow sample to enter the jar before indexing to the next position .
Operation of the sampler should stop after all jars have been filled .
Indexing Cabinet
Batch mode is used in conjunction with the indexing cabinet . The batch setpoint should represent the number of
samples needed to fill one jar in the indexing cabinet . The program will automatically select Batch mode and set the
Batch setpoint to one (1) if it is currently set to zero . If the setpoint is greater than zero, the program will use the current
batch setpoint .
A typical operating sequence for the IC starts with Batch sampling . A series of samples is taken to fill the first jar of
the IC . When the Batch is complete, the program waits 5 seconds to allow for all of the product to settle into the jar .
After this delay, the controller will send a signal to energize the IC motor . As the IC carousel moves, a proximity sensor
monitors the carousel . When the proximity sensor senses a notch in the carousel, the controller stops the motor . The
carousel should stop at the next empty jar . This cycle continues until all of the jars are full . When all of the jars are full,
all sampling stops until the IC is reset by to Operator . An alarm is logged by the controller and the IC FULL output is
activated . The operator should not reset the IC until all of the full jars have been replaced .
Operation of the IC is disabled when the door of the IC is open . This is to prevent injury from the automatic operation of
the carousel .
When the Index Cabinet is active, If the sampler does not immediately extend the plunger into the process stream and
start sampling check to see if the REMOTE ENABLE input is present . Without this input, the sampler will not function
under any circumstances . To see if the remote enable is present, please refer to drawing 10-0468A that came with the
SBC controller and confirm contact is being made between terminals TB2 3&4
Sentry SBC Controller
Original Instructions
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