20 FX20/60 Supervisory Controllers Installation Instructions
Cleaning
If dust or metal filings are present inside the unit, clean
with vacuum or compressed air. Otherwise, no
cleaning inside the unit is required. Optionally, if the
outer enclosure becomes dirty, you can wipe it with a
damp cloth and mild detergent.
Required Battery Maintenance
Battery life expectancy is a function of its discharge
cycles (the number of discharges and their depth) and
the ambient temperature of the battery during normal
operation. In most applications, the battery should see
relatively few discharges. Therefore, ambient
temperature has more to do with determining the life
expectancy of the battery than any other factor. If the
FX20/FX60 is installed in a conditioned space, the
battery should provide dependable service for
approximately 3 years. In an environment where the
operating temperature is higher (50ºC or 122ºF), you
should only expect the battery to last approximately
1 year.
The NiMH battery in the FX20/FX60 is fully discharged
before shipping. Additionally, NiMH batteries lose
charge over time if not kept trickle-charged. Therefore,
even a new unit (or replacement battery) requires up
to 18 hours of powered operation before it becomes
fully charged to provide reliable backup power.
The FX20/FX60 monitors the battery and periodically
loads the battery to test its ability to maintain
battery-backed functions. Investigate any battery
trouble message, and check the battery connections to
the unit. Replace the battery as required.
To order a new battery, see Standard Replacement
Parts.
Replacing the Battery
The replacement battery is a complete assembly,
consisting of a custom NiMH battery pack pre-attached
to a battery bracket (see Figure 10).
IMPORTANT: Use only NiMH battery packs
approved for use with the FX20/FX60.
To replace the battery:
1. Back up the FX20/FX60’s configuration to your
computer using FX Workbench.
2. Remove power from the FX20/FX60. Wait for
LED activity to stop. After several seconds, all
LEDs on the FX20/FX60 should be off.
3. Remove the cover. See Removing and Replacing
the Cover.
4. Remove the old battery and bracket assembly by
removing the four screws holding it in place. Set
the screws aside for later.
5. Remove the battery from the connector on the
FX20/FX60.
6. Recycle the battery as defined by your regional
codes. For recycling within the United States, see
the battery label.
7. Plug the battery connector plug of the
replacement battery into the battery connector on
the FX20/FX60.
8. Place the replacement battery/bracket assembly
over the option card slots, with the mounting
holes aligned with the standoffs.
9. Place the four screws through the battery bracket,
option card blanking plates, option cards (if used),
and into the standoffs on the FX20/FX60 base
board. Using a screwdriver, hand-tighten these
screws.
10. Replace the cover.
11. Restore power to the FX20/FX60 and verify
normal operation.
Repair Information
Servicing the FX20/FX60 may call for replacement
parts.
Non-replaceable Parts
Other than the parts listed in the Standard
Replacement Parts section, no serviceable
components are on the base assembly.
Memory
Any addition, modification, or replacement of memory
components requires software configuration changes
and is not field upgradeable. For additional information
on modifying the memory capacity of the FX20/FX60,
consult your local sales representative.
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