Johnson Controls FMS-1655 Series, Installation Manual

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Due to continuous improvement, TRIATEK reserves the right to change product specifications without notice.
the 1655 series of controllers from JCI, and
significantly enhances the visibility of the
status of individual units installed along a
long corridor or hallway, and allows an unsafe
condition to be immediately recognized. The
display settings of this enhanced feature
may be configured using the Safety Halo™
option on the Display Setup menu. This
option may be disabled if not required by
the installation, which simply turns off the
Safety Halo™ status indicator. If enabled, the
brightness may be adjusted from full intensity
down to barely visible in daylight conditions.
For convenience, the Safety Halo™ status
indicator incorporates a Nightly Auto-Dim
feature which allows the brightness of the
status indicator to automatically reduce in
intensity at a designated hour every day, and
then resume normal brightness at another
designated hour. The brightness of the
FMS-1655 main display screen may also
be adjusted using the Set Brightness option
on the Display Setup menu. All brightness
settings are stored to non-volatile memory
and remain in effect through a power cycle.
The Display Modes menu option on the
Display Setup menu allows users to select
a display mode based on the number of
pressure sensors being monitored. The
display mode is pre-configured at the factory
based on the sensor count, but may be
changed after adding or removing a sensor.
The main display screen of the FMS-1655
may be customized by using the Display
Setup menus. The Display Options menu
option allows specific information to be
individually suppressed by deselecting the
unwanted items from the Set Display Options
selection screen. Changing the time and
date can be accomplished either by using
the hotspots on the main display screen, or
by selecting the Set Time & Date option. The
time and date settings are volatile and are not
saved to non-volatile memory on demo units.
However, an operational unit connected to a
controller module can retain its time and date
settings for up to two hours in the event of a
power failure.
Built-in Diagnostics
The FMS-1655 incorporates several
useful diagnostic tools that may aid in
troubleshooting the system during the
installation and commissioning phase. The
Overrides option allows both analog and
relay outputs to be overridden individually.
Each analog output may be locked at the
overridden percentage while test and balance
makes adjustments to supply or exhaust
dampers, for example. While in the overridden
state, the analog output is “disconnected”
from its PID control loop, if enabled.
Cancelling the override effectively resumes
the normal PID control loop operation, again
if enabled.
A unique feature of the FMS-1655 is the Real-
Time View option, which allows the user to
see in real-time the actual inputs and outputs,
along with their voltage levels or states. One
of the most useful tools for fine-tuning the
PID loop performance is the Analog I/O Pairs
screen, which displays the analog input and
its current setpoint, along with the analog
output which is mapped to it. This allows the
user to see in real-time the varying analog
input signal and its corresponding analog
output control signal.
To preserve the configuration settings
after verifying that everything is configured
properly, the Save Settings option on the
Diagnostics menu will take a snapshot of
the current configuration settings for later
retrieval. In the event that any configuration
settings are inadvertently overwritten, they
may be restored either to the previously saved
user settings or to the factory-default settings.
To help maintain the long-term accuracy of
the FMS-1655 differential pressure reading, a
zero calibration feature has been incorporated
which allows the user to zero the display after
allowing the differential pressure between the
monitored room and the reference space to
neutralize, e.g., door open. Once the pressure
has stabilized, performing a zero calibration
ensures that the display reading accurately
shows that the pressure has equalized while
the door to the monitored space is left open.
Volumetric Offset Control
The FMS-1655 includes the ability to control
the supply and general exhaust air flow
devices in a laboratory application with
multiple fume hoods. This requires the use of
JCI’s Universal Valve Module to bring the total
supply and exhaust flows into the FMS-1655.
To configure the FMS-1655 for volumetric
offset control, simply configure AI-3 as the
supply flow input, and AI-4 as the exhaust
flow input. The volumetric offset setpoint must
be entered while configuring AI-4. Be sure to
select Vol. Offset Control on the Flow Sensor
Input configuration screen. The volumetric
offset control signal is output on AO-4, which
may be daisy-chained to each of the supply
air flow devices. The secondary temperature
control signal for heating is output on AO-2,
which may be daisy-chained to each of the
reheat valves. For more information on using
the FMS-1655 for volumetric offset control
applications, please refer to the FMS-1655
Programmer’s Guide.
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QUICK START GUIDE
FMS-1655 Quick Start Guide