Nexen Smart Valve 964508 - Manual (Page 12)

9
FORM NO. L-20353-C-0302
PROBLEM PROBABLE CAUSE SOLUTION
After removing the Exhaust Pres-
sure signal, the output pressure is
not exhausted by the SmartValve.
During torque overloads, the
output pressure is exhausted but
no alarm indication is given.
Exhaust Pressure signal does not make it to
the SmartValve.
Exhaust Pressure signal does not cause the
SmartValve to exhaust air pressure.
Bad connection between connector 1 and
alarm output receiving device (IE Program-
mable Logic Controller or indicator).
Alarm output not configured properly
Remove Exhaust Pressure signal and observe
that LED D9 turns off. If it does not, then in-
spect connector 1 and the wiring back to the
signal source for bad connections.
Remove Exhaust Pressure signal and observe
that LED D9 turns off. If D9 turns on, then
signal source must be changed such that
+24VDC is applied normally and then removed
during an overload condition.
Examine wiring and connections and make nec-
essary repairs.
Jumper W3 determines whether the alarm out-
put relay conducts current or not during an over-
load condition, refer to "ALARM OUTPUT" in
the ELECTRICAL CONNECTIONS section
and "JUMPER W3" in the SETUP section.
SPECIFICATIONS
Power Supply -------------------------------------------------------------------------------------------------------- +24 VDC @ 500 mA
Operating Ambient Temperature --------------------------------------------------------------------- 32°F to 140°F [0 to 60°C]
Supply Air Pressure ----------------------------------------------------------------------------- 85 to 150 psig [5.9 to 10.3 BAR]
Supply Air Filtering ----------------------------------------------------------------------------------------------------- 20 micron element
Exhaust Pressure and Signal Input ---------------------------------------- 12-24VDC @ 24 mA maximum, non isolated
Pressure Selection Inputs ----------------------------------------------- 12-24VDC @ 24 mA maximum,optically isolated
Analog Pressure Selection Input -------------------------------------------------------------- 0-10VDC @ 1 mA, non isolated
Alarm Output ---------------------------------------------------------- 100VDC max. @ 150 mA maximum,optically isolated
Enclosure -------------------------------------------------------------------------------------------------------------- Nylon with o-ring seal
Cable ------------------------------------------------------------------------------------------- 20 AWG conductors, 78 in. [2 m] long
Air Line Diameter ----------------------------------------------------------------------------------------------------------- 0.25 in. or 6 mm
Accuracy --------------------------------------------------------------------------------------------- +/- .25% full scale @ 77°F [25°C]
Cv Factor -------------------------------------------------------------------------------------------------------------------------------------- 0.030
SmartValve -------------------------------------------------------------------------------------------------------------------------------- 964508
Optional Power Supply -------------------------------------------------------------------------------------------------------------- 964509