Network Controller 6 Mounting and Wiring Guide
Updated: January 16, 2012
Replacement Parts
New Replacement Units
24
New Replacement Units
To replace a faulty unit, order and install a
new
T-600 controller. If the faulty T-600 is
still in warranty
, you can
receive credit by returning it. Be sure to contact the vendor for a return material authorization (RMA) number
before shipping an item for return credit. See
page 25, for more details.
Note
Before ordering a new T-600, it is strongly recommended that you contact your normal technical
support resource to eliminate the possibility of a software issue or mis-configuration problem.
Replacing the T-600 base assembly
Caution
Before handling circuit boards, discharge any accumulated static by touching the metal surface of
the T-600. For details, see the
“Static Discharge Precautions”
To replace the T-600 base assembly in the field, proceed as follows:
Procedure 9
Replacing a T-600 base assembly.
Step 1
Using the appropriate NiagaraAX software tool, back up the controller’s configuration to your PC.
Step 2
Remove power to the controller. The unit should power down automatically.
Wait for all LEDs to remain off.
Note
If IO accessory modules are installed, and any I/O points have voltage, turn the devices off or
disconnect power to them.
Step 3
Note positions of all communications and other wiring cables going to the T-600, as well as all
installed accessory modules (if they must be removed). If necessary, label connectors and accessory
modules to avoid mis-connection later, after T-600 is replaced.
Step 4
Unplug all Ethernet, serial, LON, modem, and I/O connectors from the T-600, and unplug its earth
ground wire.
Step 5
If IO accessory modules are installed:
–
If DIN rail mounting with DIN end-clips was used, you may be able to remove the DIN rail end clip
that secures the T-600 end of the assembly, and then
slide
the controller away from the rest of the
assembly. Then you can remove the controller from the DIN rail (see
on page 6), leaving the
mounting and wiring of IO modules untouched.
In this case, after removing the T-600 controller from the DIN rail, skip ahead to
–
If tab (screw) mounting was used
instead
of DIN rail mounting, or if a combination of DIN rail
mounting
and
tab screws (into the T-600’s “accessory side” tab holes, see
), you will need to
remove the accessory modules
first
, before removing the T-600.
In this case:
a.
Making a careful note or all wiring terminations, unplug the I/O connector plugs and earth ground
wires from the installed IO modules.
