May 2, 2011
POWER UP AND INITIAL CHECKOUT
Check the Status LED
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Part Number 11694 Rev 1.6
JACE-700
MOUNTING AND WIRING GUIDE
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Check the Status LED
When power is applied, the front cover STATUS LED will light green. This indicates
that the system is OK and that power is applied. The STATUS LED may be blinking
until the QNX OS has finished loading and the Niagara platform daemon is running.
Once this boot sequence has finished, the STATUS LED should remain lit (steady),
and the BEAT LED should start blinking, at a typical rate of 1Hz. Typically, this is
about 30 seconds after power is applied.
If after applying power, the STATUS LED goes out, or if the BEAT LED comes on
(steady) and stays lit longer than 2 minutes, contact Systems Engineering for
technical assistance. See also the
About the Backup Batteries
A JACE-7 series controller has two different backup batteries:
• An on-board
, and
• An optional external, sealed lead-acid, rechargeable
(or batteries)
For continuous system operation during loss of primary power (to the
NPB-PWR-UN module powering the unit), unless power loss is only a few seconds,
both batteries should be installed. Station alarms are generated if either battery is
uncharged or unable to hold a sufficient charge, as well as whenever primary power
is lost. You should always investigate any alarm related to backup batteries.
NiMH battery pack
A custom 10-cell NiMH (nickel metal hydride) battery pack is inside the controller,
mounted atop the shield, and is secured by a metal bracket and two kep nuts. This
battery allows the controller to continue station operation (only) through very short
power bumps, meaning a few seconds in duration. If a longer outage, the NiMH
battery provides enough run time for the unit to backup data and then shutdown.
Typically, this process takes about one minute. Shutdown occurs automatically, after
data is backed up to on-board flash memory.
Upon startup (boot), a test of the NiMH battery is performed. A system alarm is
generated if the NiMH battery voltage level is found to be bad. A charge is also
initiated upon startup, which lasts from 3 hours minimum, and can range up to 18
hours if the battery is completely discharged. During this NiMH battery charge
period, neither the NiMH battery or the external
startup NiMH charge period, a periodic test of
both
batteries occurs, and the
appropriate battery alarm is generated is either battery is found to be bad.
Note
• If the last NiMH battery test was “bad,” upon loss of primary power the
controller performs an immediate shutdown, backing up data and pow-
ering off (including attached expansion modules).
• A NiMH battery characteristic is to lose charge if not left in charge
mode (trickle charge). Leaving the battery unconnected, or in the unit
powered off will cause the battery to fully discharge in a matter of
weeks. Note that in the case of a new controller, it ships from the factory
