Johnson Controls YORK OPTIVIEW CONTROL CENTER, Руководство по эксплуатации

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JOHNSON CONTROLS
14
FORM 160.10-O1
ISSUE DATE: 4/27/2018
SECTION 2 - OPTIVIEW OPERATION
Start/Stop Control Switch Positions
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 completed (such
as vane calibration). 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 (◄ )
When the switch is placed in the “START” position,
the chiller will begin the start sequence. The switch is
only in this position momentarily as the operator at-
tempts to locally start the unit. After release, the switch
will automatically return to the “RUN” position. The
unit will begin the start sequence only if all fault condi-
tions are cleared.
RUN ( ▌)
When the switch is placed this position, the chiller is
able to operate. The switch spring-returns to the “RUN”
state after being turned to the “START” position. When
in this position, the chiller is allowed to function nor-
mally and will also allow the chiller to automatically
restart following a cycling shutdown. The switch must
be in this position to receive a valid remote start signal
when operating under a remote control source.
OPTIVIEW DISPLAY PANEL OVERVIEW
The graphical display on each control panel allows
a wide variety of information to be presented to the
user. Each screen description in this document will
begin with a section entitled “ Overview ” which will
describe the graphical elements on the screen and give
a short summary of the functions available. Each ele-
ment on the screen will then be categorized into three
distinct groups: “ Display Only ”, “ Programmable ”,
and “ Navigation ”. Below is a short description of what
types of information are included in these groups.
The Programmable values and Naviga-
tion commands are also subject to access
level restrictions. A minimum access level
is noted for any value or command that
can be changed.
Display Only
Values in this group are read-only parameters which
provide information about the chiller operation. This
type of information may be represented by a numerical
value, text, or an LED image. If a monitored numeri-
cal value is above the normal operating range, the high
limit value will be displayed along with the greater-
than ‘>’ symbol; if the value is below the normal oper-
ating range, the low limit value will be displayed along
with the less-than ‘<’ symbol. Numerical values ren-
dered invalid by other conditions, will display X’s to
indicate this condition.
Programmable
Values in this group can be changed by the user, pro-
vided the user is logged in at the appropriate access
level as described below. Each of the programmable
values requires a specific access level which will be
indicated beside the specified value. All of the pro-
grammable controls in the system fall into one of the
categories described below:
Access Level
When power is applied to the chiller, the system begins
with an access level of “View”. This will allow the user
to navigate to most screens and observe the values dis-
played there. The user will not be allowed to change
any values at the “View” level. To change any values,
the user must return to the “Home” screen (shown by
default when power is applied to the system) and use
the “Login” button, located in the series of five but-
tons below the display. The user may also utilize the
“Change Setpoints” key (described below) to login. At
this point, the user will be prompted to enter a User ID
and the corresponding password.
By default, the User ID is zero (0). In order to gain
standard “Operator” level access, the password would
be entered as 9 6 7 5, using the numeric keypad and
then pressing the ‘
ü
’ (Enter) key. The “Operator” ac-
cess level will revert to the “View” level after 10 con-
tinuous minutes without a keypress.
If a custom user ID and password have been defined
(see “User Screen”), the user may enter that user ID
and the corresponding password value at login. If the
correct password is entered, the user is authorized with
the appropriate access level. If an incorrect password is
entered, the user is notified of the failure and prompted
again. At this point, the user may retry the password
entry or cancel the login attempt.