P50244 Rev 02
Cutler-Hammer
Installation Instructions — Conveyor Sensors Power Supply
The Sensor Power Supply is suitable for use in a wide variety of
material handling applications. The unit delivers 100 W at 26VDC and
supports easy, Class II wiring. The power supply is a tamper-resistant,
rugged component that is easy to mount to a conveyor side-channel or
support. The unit is sealed in a rugged aluminum enclosure with
threaded fittings for all cable entries.
The supply is constructed with an integral junction box to enclose AC
connections. Therefore, it is not necessary to mount the supply in an
enclosure to comply with applicable wiring codes.
Mount the supply to a secure surface using integral mounting flanges
and 3/8 inch mounting hardware (not provided). Mounting holes are set
on 6 inch centers. Remove applicable gasketed cover(s) and wire as
indicated by the wiring diagram and as described below. Route wiring
through knockouts in the enclosure and secure using threaded 1/2 inch
NPT conduit fittings or cord grips as required (not provided). Replace
the gasketed cover(s).
DC Wiring
The Output Side terminals shown in the wiring diagram provide the DC
power output connection for use with a sensor system. Two sets of
terminals are wired in parallel to provide a convenient second set of
connection points. Connect the corresponding wires from the sensor
system to +VDC and –VDC as necessary.
INTRODUCTION
GENERAL INSTALLATION AND MOUNTING
PS256A-44B1
PS256A-44B2
MODELS COVERED IN THIS MANUAL
IN ORDER TO AVOID ELECTRIC SHOCK OR OTHER POSSIBLE
INJURY:
• DO NOT USE THIS PRODUCT FOR HUMAN SAFETY
APPLICATIONS. IT WAS NOT DESIGNED OR TESTED AND IS
NOT RECOMMENDED FOR THIS USE.
• DO NOT USE THIS PRODUCT IN HAZARDOUS LOCATIONS
(E.G. EXPLOSIVE ATMOSPSHERES). IT WAS NOT DESIGNED
OR TESTED AND IS NOT RECOMMENDED FOR THIS USE.
WARNING
TROUBLESHOOTING
The supply provides two indicators to allow for easy troubleshooting:
ON
ON
Normal Operation Verify load properly connected to
DC terminals.
ON
OFF
DC Supply OFF
The supply is in short-circuit mode.
Turn OFF AC power then locate and
remove the output short.
ON
Flashing Exceeding Class II Reduce output load to less than 100
output limit
watts.
OFF
OFF
AC not applied or
primary fuse
blown
OFF
ON
One input phase
Turn OFF AC power and reconnect
missing
all 3 input phases.
Verify AC voltage is present and is
wired properly. If problem persists,
the main fuse is blown or supply
has been physically damaged.
Replace the power supply.
(RED)
AC
IN
(GREEN)
DC
OUT
SUPPLY STATUS
TROUBLESHOOTING STEPS
In addition, a separate indicator is provided inside the enclosure
housing on the Input Side to aid in troubleshooting. As noted above,
the main power supply AC indicator LEDs will go off if one phase of the
incoming AC power is lost. AC voltage may still be present on one or
both of the remaining phases. This RED indicator LED, if on, confirms
voltage is still present. De-energize all circuits prior to work on the
supply.
NOTE: Even if this internal AC indicator is not lit, physically verify all
circuits are de-energized prior to any work on the supply.
APPROXIMATE DIMENSIONS
