JOHNSON CONTROLS
20
FORM 155.21-O1 (615)
OPTIVIEW CONTROL CENTER
The OptiView™ Control Center display is highlighted
by a full screen graphics display. This display is nested
within a standard keypad, and is surrounded by “soft”
keys which are redefined based on the currently dis
-
played screen. Eight buttons are available on the right
side of the panel, and are primarily used for navigation
between the system screens. At the base of the display
are 5 additional buttons. The area to the right of the key-
pad is used for data entry with a standard numeric keypad
provided for entry of system setpoints and limits.
The
Decimal
key provides accurate entry of
setpoint values.
A
+/-
key has also been provided to allow entry
of negative values and AM/PM selection during
time entry.
In order to accept changes made to the chiller
setpoints, the
Check
key is provided as a uni-
versal "Enter" or "Accept’’ symbol.
In order to reject entry of a setpoint or dismiss
an entry form, the
X
key is provided as a uni-
versal "Cancel" symbol.
Cursor Arrow
keys are pro-
vided to allow movement on
screens which contain a large
amount of entry data. In ad-
dition, these keys can be used
to scroll through history and
event logs.
The Start/Stop control is operated via a three-position
rocker/rotary switch. When toggled all the way to the
right, it is considered in the
STOP/RESET
position.
When in the middle position, this is considered the
RUN
state. When toggled to the left-most position, it is
considered in the
START
state. Each state is described
in detail below:
•
STOP / RESET (O)
When in this position, the chiller will not run under
any condition. For safety reasons, this position is
required for many maintenance tasks to be com-
pleted. In addition, the switch must be placed in this
state following a Safety shutdown before the chiller
is allowed to restart. This guarantees that manual
intervention has taken place and the shutdown has
been acknowledged.
• START (◄ )
The switch can only remain in this position when
being acted upon by a manual force. Once the user
has released the switch, it automatically reverts to
the RUN position. Generally, this state only occurs
momentarily as the operator attempts to locally start
the unit. Once this position has been sensed, if all
fault conditions are cleared, the unit will enter the
system start sequence.
•
RUN ( ▀ )
When in this position, the chiller is able to operate.
The switch spring-returns to this state after it has
been toggled to the
START
position. When in this
state, the chiller is allowed to function normally, and
will also allow the chiller to automatically restart fol-
lowing a Cycling shutdown. The switch must be in
this state to receive a valid remote start signal when
operating under a remote control source.
29348A
FIGURE 3 -
OPTIVIEW CONTROL CENTER
OptiView Control Center
