Ingersoll-Rand Intellisys SSR 10-40, Руководство для обслуживающего персонала

Страница: 19 / 107

To check for a grounded cable condition, remove the ground wire on Terminal
27. Before performing this function, disconnect all electrical power, lock and tag.
Run the compressor and if it continues to run, then this is an indication that the
transducer cable is defective and should be repaired or replaced. Remember,
to reconnect the ground connection on Terminal 27 after the test and repair is
complete.
INTELLISYS HOUR TIMER
During the first hour of compressor operation, the Intellisys is counting in
minutes only. If a decimal is showing the unit is timing in minutes.
There are three 20 minute increments in the first hour.
20-40-60
If the power is interrupted in any of the 20 minute increments, the time goes back
to the last elapsed time 20 minute period.
Example: The unit has 21 minutes and the power is removed from the unit. The
timer will go back to the 20 minutes.
Notice the Intellisys panel showing 59 minutes of accumulated time. The display
will change over to 1 hour and continue recording in 1 hour increments.
OPTION INSTALLATION AUTO STOP/START
For those plants which have a widely varying plant air demand, larger air storage
capacity and/or want automatically available standby air capacity, Automatic
Stop/Start Control Option is available.
During periods of low demand, if the line pressure rises to the off line set point
of Intellisys controller, a timer is energized and begins to time out. The automatic
stop time is adjustable in a 10-30 minute range. The timer will continue to
-15- -16-
7. Slide the socket connector back
into the plastic housing. You can
hear the latch click when it is all the
way in.
6. Bend an arc back into the socket
connector to insure good contact
with the mating pin.
Another symptom causing all 8888's is that even though power is present at the
primary and secondary contacts of the transformer, intermittent contact can
cause shutdown within the control circuit.
The electrical signal in the pressure transducer can ground itself fully or
intermittently when the compressor is operating.
The spade connection at the end of the wire may contact the inner metal wire
sheath of the cable connector.
There are four wires inside the cable. Therefore several combinations of ground
contact is possible.
8. Make sure that the beveled latch
on the connector latches with the
mating half on the interface board.