IQ DP-4000
SECTION
6
- TROUBLESHOOTING AND MAINTENANCE
6.1 LEVEL OF REPAIR
This manual is written assuming you will perform only
unit-level troubleshooting. If you trace the cause of a
malfunction to the IQ DP-4000, replace the unit with a
spare and return the malfunctioning unit to Cutler
Hammer for factory repairs.
6.2
MAINTENANCE AND CARE
The IQ DP-4000 is designed to be a self-contained and
maintenance-free unit. The printed circuit boards are
calibrated and conformally coated at the factory. They
are intended for service by factory trained personnel
only.
Operate the IQ DP-4000 in an environment within the
temperature range of -25°C to +70°C. The environment
should also be free of excess humidity.
If you have spare units, store them in the original
packing material and container.
6.3
TROUBLESHOOTING
This section divides troubleshooting into two parts:
•
Troubleshooting during initial startup (refer to Table
6.A)
•
Troubleshooting during operation (refer to Table
6.8)
AwARNING
ALL MAINTENANCE PROCEDURES MUST BE
PERFORMED ONLY BY QUALIFIED PERSONNEL
WHO ARE FAMILIAR WITH THE IQ DP-4000 AND ITS
USES. FAILURE TO OBSERVE THIS WARNING
COULD RESULT IN SERIOUS INJURY, DEATH,
AND/OR EQUIPMENT DAMAGE.
TROUBLESHOOTING PROCEDURES MAY INVOLVE
WORKING ON
EQUIPMENT IN AREAS WITH
EXPOSED LIVE PARTS WHERE THE HAZARD OF A
FATAL
ELECTRIC
SHOCK
IS
PRESENT.
PERSONNEL M UST EXERCISE EXTREME CAUTION
TO AVOID INJURY OR EVEN DEATH.
ALWAYS DISCONNECT AND LOCK OUT THE
CURRENT SOURCE AND
CONTROL
POWER
SUPPLY BEFORE TOUCHING THE COMPONENTS
ON THE REAR OF THE IQ DP-4000.
TD1 7548A
6.4
REPLACEMENT
To replace the IQ DP-4000:
1 . Turn off control power at the main disconnect or
isolation switch of the power supply. If the switch is
not located in view of the IQ DP-4000, lock it out to
guard against other personnel accidentally turning
on the switch .
2. Verify that all "foreign" power sources wired to the
IQ DP-4000 are de-energized. These sources may
also be present on the relay and the input/output
terminal block. Temporarily short the current
transformer (CT) inputs at a point prior to the IQ
DP-4000's terminals before attempting to open the
terminals on the IQ DP-4000.
3. Before disconnecting any wires from the unit, you
must individually identify them to assure that you
can reconnect them properly. Make a sketch to aid
in terminal and wire identification.
4. If an optional ribbon cable connects with the
communication port, carefully disconnect it.
5. If the power module for the unit is in a remote
location, carefully unplug the optional extension
cable from the IQ DP-4000 chassis, not from the
power module. Remove the wires by loosening the
wire connection at the screw terminal.
AwARNING
SUPPORT THE IQ DP-4000 FROM THE FRONT SIDE
WHEN THE SCREWS ARE LOOSENED OR
REMOVED
IN STEP
6.
WITHOUT
SUCH
SUPPORT, THE UNIT COULD FALL OR THE
PANEL COULD BE DAMAGED.
6. Remove the mounting screws holding the unit
against the door or panel. The screws are
accessible from the rear of the unit. Carefully lay the
screws aside for later use.
7. Remove the present unit and mount the
replacement unit.
8. To connect the replacement unit, reverse the
procedure outlined in steps 4 - 7.
9. Use the sketch you made in step 3 to replace each
wire at the correct terminal.
1 0. Go to Section 4.5 and perform initial startup.
6.5 TECHNICAL ASSISTANCE
For information, technical assistance, or referral to an
authorized
distributor,
contact
Cutler-Hammer
39
www
. ElectricalPartManuals
. com
