NDC BETA LaserMike LaserSpeed Pro 8500-4, Instruction Handbook Manual

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17-16 LaserSpeed Pro 8500-4 Instruction Handbook: Troubleshooting Guide
may result in false Material Pre-
sent readings.
Counter isn't counting, but
everything looks fine in La-
serTrak Wiring
Configuration Verify that voltage and ground
are both connected between the
counter and the LaserSpeed.
If using a counter with single-
ended inputs, verify that Phase A
False and Phase B False are not
connected to ground.
Check scaling on pulse output
and in counter, make sure that
maximum frequency of the coun-
ter is not exceeded.
Length is still counting even
though material is not in
front of gauge, and QF is
zero.
--- or ---
Counter continues to count
after material exits meas-
urement area. Velocity Hold When the velocity is above the
"Hold Velocity if Above" setting,
and the gauge loses measure-
ments, it will continue to output
pulses and count length.
To disable this feature, use La-
serTrak to set the Hold Velocity if
Above setting to a large value
like 50,000.000.
Pulses are only 4-4.5V, even
though I've connected 24V
to User Input Voltage (pin
20). Signal Ground not con-
nected.
Connected to the
wrong pulse output The pulse output ground is iso-
lated from the power ground.
Make sure the +24V supply for
the pulse outputs is connected to
both User V
IN
(Pin 20) and Signal
Ground (pin 21.)
The LS8500-4 has two pulse
outputs, one that is voltage scal-
able, and one that is not. Make
sure you are connected to the