Liquid Controls LCR 600 Setup & Op - Manual (Page 64)

64
problem probable cauSe SolutIon
“pulser failure”
appears on the
diagnostic ticket
or on the LCR 600
display. 1.
2.
Missing pulse counts.
Excessive reversals.
Pulser faults generally
occur in a high vibration
environment. Liquid
Controls is not responsible
for pulser failures caused
by excessive system
vibrations.
1. Using a multimeter, measure the following DC voltages
on terminal block J8, while J8 is connected to the circuit
board. Use terminal 37 as ground reference.
TERMINAL # VoLTAGE
J8 #32 +5 VDC
J8 #33 0 or +5VDC
J8 #34 0 or +5VDC
2. If the terminals show the preceding voltages, check for
loose pulser wiring connections. If no loose connections
are found, replace the encoder harness.
(PN 81584 – for Series E2611X and E2612X)
(PN 81412 – for Series E2605X and E2606X) or
(Hard wires for POD pulser.)
TERMINAL # VoLTAGE
J8 #32 0 VDC
J8 #33 +1-3VDC
J8 #34 +1-3VDC
4. If the LCR 600 still shows a pulser failure, insert a ticket
into the Epson printer and begin a delivery. With product
flowing through the meter, measure the following DC
voltages on the terminal block.
TERMINAL # VoLTAGE
J8 #32 0 VDC
J8 #33 +1-3VDC
J8 #34 +1-3VDC
5. If the voltages shown below are observed, ensure that
the pulser shaft is rotating. Look for any mechanical
problems that may cause either the meter or the pulser
shaft to lock up. If the Lap Pad continues to indicate a
pulser failure, replace the pulser
(Part # 81582 for Series E2611X and E2612X)
(Part # 81170 for Series E2605X and E2606X) or
(Part # 81159 for POD pulser)
TERMINAL # VoLTAGE
J8 #32 +5 VDC
J8 #33 0 or +5VDC
J8 #34 0 or +5VDC
troubleShootIng