11
Smart Condition Monitoring System Electrical and Communications Manual
Transducer Connection
CONNECTING YOUR OWN 0-5V DC OUTPUT
CURRENT TRANSDUCER
It is very important that you do not connect the cable from the
current transducer to the converter box box without
successfully completing this procedure. If it is not possible to
successfully complete this procedure, then the cable should be
left disconnected and adequate protection to prevent shorting
of the wires or dirt contamination be provided until such a
time as a test can be completed.
1. To complete this installation and test, the cable from the
0-5V CT or PLC providing the signal must be disconnected
and isolated at the source.
2. Please provided a 2-core cable. Double check it has been
disconnected from the signal source at the other end.
Ensure the VSCC9001 converter box connector is not
connected to either the converter box or the Polarity
Checker box then unscrew the free end of the cable joint
and slip the gland nut, seal grommet and removable
terminal cover up the cable (
Step F
).
3. Strip back the cable jacket 1” and strip each of the 2 core
wires back ½” to bare wire (
Step B
).
4. There are only 2 screw down terminals inside the cable
joint. Loosen, insert a bared core wire and tighten the
terminal and repeat. It is not important at this stage which
core wire is connected to which terminal (
Step G
).
5. Screw terminal cover onto cable joint, slide down blue
cable gland seal and insert into “fingers” then slide down
gland nut and loosely tighten (
Step H
).
6. Connect the 0-5V CT or PLC cable at the source end and
connect the Polarity Test Box to the EN2 connector on the
end of the lead from the cable joint by slowly turning the
connector until the key aligns then insert and tighten the
finger lock nut on the connector. Sometimes the finger nut
needs to be turned slightly to allow the connector to
engage fully (
Step E
).
7. Provide either a test signal from the PLC or engage the
equipment such that current is drawn by the motor. Using a
Multimeter with the input and range set to around 0-20V dc
(0-10V dc minimum) check whether a positive or negative
voltage reading is shown on the multimeter (
Step E
). Note
that if the motor is not turning, the meter will read 0V dc.
8. If the meter displays a positive value less than 5V dc, this
test is complete. Tighten the cable gland, disconnect the
cable from the test box, and connect to the converter box.
If the multimeter displays a negative DC voltage reading
the wires inside the cable joint are reversed.
CAUTION: the equipment must be turned off or the test signal
deactivated before the cable joint is opened or damage to the PLC
or CT could occur.
Step F
Step B
Step H
Step G
