Installation, Operation and Service Manual
LKAT
2
+24V
© 2018 DynAmp, LLC
Page 16
046404 E
3. The location should be within reach of the head cables supplied with the system.
Standard head cable length is 33 feet (10 meters). Extra-long head cables may also be
ordered for special applications.
4. Route interconnection cables away from bus and other high voltages.
Refer to Metering Unit Outline & Mounting drawing at the end of this manual. Anchor the
cabinet in the desired location after ensuring adequate cable reach.
5. Connect Measuring Head cable assemblies to the Metering Unit.
6. Refer to the LKAT
2
System Wiring Diagram. The output cable assembly consists of
20AWG shielded twisted pair cable (8 pairs) with 17 (one contact position in output
connector is unused) position circular connector on one end, and stripped, tinned wires on
the other end. The twisted wire pairs are jacketed with black and white PVC. Each pair
has the pair number imprinted on the jacket. Connect the output cable assembly wires to
the appropriate points in the process electronics system.
7. A 3-conductor power cable is supplied with the system. Connect power cable to the
Metering Unit.
4.6 SYSTEM CHECKOUT
Recheck all wiring connections against the drawings to ensure proper installation. Energize
the LKAT
2
System. Confirm that the green status LEDs are illuminated. If accuracy
diagnostic LED lights red, skip to “Troubleshooting an Accuracy Diagnostics Fault Indication”
in the “Theory of Operation” section of this manual
Energize the rectifier to the desired test current. Calculate the expected Metering Unit output
signal magnitude at the test current.
The measured Metering Unit output signal magnitude should be equal to (or very close to) the
expected value that was calculated.
If the Digital Display option is included in the Metering Unit, the displayed kA level should also
be equal to (or very close to) the expected value that was calculated.
Refer to “SPECIFICATIONS” section of this manual for more information.
Photocopy the appropriate LKAT
2
Diagnostic Measurements Forms. Form 1 is for diagnostic
measurements at zero bus current (with the Measuring Head on or off the bus). Form 2 is for
diagnostic measurements with the Measuring Head installed on the bus with the bus
energized. Follow the directions to measure and record necessary information.
•
These forms are intended to help keep accurate records of LKAT
2
functional tests.
•
This information may prove valuable in the event of a malfunction.
•
These measurements do not constitute system calibration.
•
Space is provided for the recording of three sets of readings.
•
Voltages may vary slightly with temperature extremes.
•
System performance will typically remain within nominal specifications when measured
levels fall within the acceptable limits shown on the forms.
•
Levels must be measured and recorded under test conditions shown on the forms.
•
The Metering Unit cover must be open during system checkout, as all measurements
are made inside Metering Unit on Main pc board terminal blocks. The cover should
remain firmly closed during normal operation.
Always
complete these forms in full
before
contacting the factory.
