Trane Tracer CH.530 RLC-SVU01B-E4, Tracer CH.530 Owner's Manual
Tracer CH.530™
Chiller Control System
“HO” Design Sequence
RLC-SVU01B-E4
Owner
Manual
EasyView and DynaView Interfaces
RLC-SVU01B-E4
Foreword
These Installation, Operation, and
Maintenance instructions are given
as a guide to good practice in the
installation, start-up, operation, and
periodic maintenance by the user of
Tracer CH.530 chiller control
modules.
They do not contain the full service
procedures necessary for the
continued successful operation of
this equipment. The services of a
qualified service technician should
be employed, through the medium
of a maintenance contract with a
reputable service company.
Warranty
Warranty is based on the general
terms and conditions of the
constructor. The warranty is void if
the equipment is modified or
repaired without the written approval
of the constructor, if the operating
limits are exceeded, or if the control
system or the electrical wiring is
modified.
Damage due to misuse, lack of
maintenance, or failure to comply
with the manufacturer's instructions,
is not covered by the warranty
obligation.
If the user does not conform to the
rules of chapter "Maintenance," it
may entail cancellation of warranty
and liabilities by the constructor.
Reception
On arrival, inspect the unit before
signing the delivery note. Specify
any damage on the delivery note,
and send a registered letter of
protest to the last carrier of the
goods within 72 hours of delivery.
Notify the local sales office at the
same time.
The unit should be totally inspected
within 7 days of delivery. If any
concealed damage is discovered,
send a registered letter of protest to
the carrier within 7 days of delivery
and notify the local sales office.
Units are shipped with the
refrigerant operating or holding
charge and should be examined with
an electronic leak detector to
determine the hermetic integrity of
the unit. The refrigerant charge is not
included in the standard Warranty
Cover.
General information
About this manual
Cautions appear at appropriate
places in this instruction manual.
Your personal safety and the proper
operation of this machine require
that you follow them carefully.
The constructor assumes no liability
for installations or servicing
performed by unqualified personnel.
©American Standard Inc. 2004
RLC-SVU01B-E4
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Contents
Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Commonly Used Abbreviations . . . . . . . . . . . . . . . . . . . . .4
CH.530 Communications Overview . . . . . . . . . . . . . . . . . .5
Controls Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
EasyView Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Outputs: Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Diagnostic Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
DynaView Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Key Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Controls Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
RLC-SVU01B-E4
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Commonly Used
Abbreviations
Commonly Used Abbreviations
Abbreviations and terms used in this manual are defined below.
BAS = Building Automation System
CAR = Circuit Shutdown, Auto Reset
CLS = Current Limit Set Point
CMR = Circuit Shutdown, Manual Reset
CPRS = Compressor
CWR = Chilled-Water Reset
CWS = Chilled-Water Set Point
EXV = Electronic Expansion Valve
FLA = Full Load Amperes
HACR = Heating, Air Conditioning, and Refrigeration
HVAC = Heating,Ventilating, and Air Conditioning
IFW = Informational Warning
LLID = Low Level Intelligent Device
LRA = Locked Rotor Amperes
MAR = Machine Shutdown, Auto Reset
MMR = Machine Shutdown, Manual Reset
PCWS = Front Panel Chilled-Water Set Point
PSIG = Pounds-per-Square-inch (gauge pressure)
RAS = Reset Action Set Point
RLA = Rated Load Amperes
RCWS = Reset Chilled-Water Set Point
RRS = Reset Reference Set Point
Tracer ™ = Type of Trane Building Automation System
UCLS = Unit Current-Limit Set Point
UCM = Unit Control Module (Microprocessor-based)
RLC-SVU01B-E4
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Controls Interface
Tracer CH.530
™
Communications Overview
The Trane CH.530 control system that
runs the chiller consists of several
elements:
•
The main processor collects data,
status, and diagnostic information,
and communicates commands to
the starter module and the LLID
(Low Level Intelligent Device) bus.
The main processor has an integral
display (EasyView or DynaView).
•
Higher-level modules (e.g., starter)
exist only as necessary to support
system-level control and
communications. The starter
module provides control of the
starter when starting, running, and
stopping the chiller motor. It also
processes its own diagnostics and
provides motor and compressor
protection.
•
Low Level Intelligent Device (LLID)
bus. The main processor
communicates to each input and
output device (e.g., temperature
and pressure sensors, low voltage
binary inputs, analog input/output)
all connected to a four-wire bus,
rather than the conventional
control architecture of signal wires
for each device.
•
The communication interface to a
building automation system (BAS).
•
A service tool to provide all service
and maintenance capabilities.
Main processor and service tool
software is downloadable from
www
.Trane.com.
EasyView or DynaView provides bus
management. It has the task of
restarting the link, or filling in for
what it sees as “missing” devices
when normal communications have
been degraded. Use of TechView may
be required.
The CH.530 uses the IPC3 protocol
based on RS485 signal technology
and communicating at 19.2 Kbaud, to
allow three rounds of data per
second on a 64-device network. A
typical four-compressor RTAC will
have approximately 50 devices.
Most diagnostics are handled by the
EasyView or DynaView. If a
temperature or pressure is reported
out of range by an LLID, the
EasyView or DynaView processes
this information and calls out the
diagnostic. The individual LLIDs are
not responsible for any diagnostic
functions. The only exception to this
is the Starter module.
Note: It is imperative that the CH.530
Service Tool (TechView)be used to
facilitate the replacement of any LLID
or reconfigure any chiller
component. TechView is discussed
later in this section.
Controls Interface
Each chiller is equipped with either
the EasyView or DynaView interface
to the CH.530. EasyView provides
basic monitoring and control
functions in a language-independent
format, with an LED display in an
enclosure. DynaView has the
capability to display additional
information to the advanced
operator, including the ability to
adjust settings. Multiple screens are
available and text is presented in
multiple languages as ordered.
TechView can be connected to either
the EasyView or DynaView module,
and provides further data,
adjustment capabilities, and
diagnostics information using
downloadable software.
RLC-SVU01B-E4
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The EasyView interface to the CH.530
consists of a display in a 9.75" wide,
8" high, and 1.6" deep [250 mm x 205
mm x 41 mm] enclosure. The
enclosure contains a circuit card and
a weathertight connection for the
RS232 TechView. Use of TechView is
discussed in a separate publication.
The LED display contains basic
information for machine monitoring
and control. The information
presented uses symbols and is
language-independent.
Outputs: Display
Default Display: During normal
operation, Evaporator Leaving-Water
Temperature is shown.
Set Point Display: The Evaporator
Leaving-Water Temperature Set Point
is displayed if the increment (+) or
decrement (-) key is pressed. The
Evaporator Leaving-Water Set Point
will remain on the screen for three
seconds after increment or
decrement is released.
NOTE: Even if the chiller is in an “Ice
Building Mode” operation, the
display will continue to show the
Leaving Water Temperature and the
Leaving Water Temperature (Chilled
Water) Setpoint. It will NOT display
the Evaporator Entering Water
Temperature or the Ice Termination
Setpoint even when they are active
during the “Ice Building” mode of
operation.
Diagnostic and Interlock Display:
When in a diagnostic or interlock
condition, the front panel will
continue to show the default or set
point display as appropriate. When in
a diagnostic condition (service
wrench LED flashes) or interlock
condition (interlock LED flashes),
simultaneously depressing the
increment (+) and decrement (-) keys
will cause the most-severe active
diagnostic or interlock to be
displayed in code for 3-5 seconds,
after which the front panel will revert
to the Evaporator Leaving-Water
Temperature. Only the most-recent
diagnostic will be retained. The Trane
standard 3-digit diagnostic codes are
listed at the end of this section.
The
diagnostic readout should be noted
and is for the use of Trane service.
EasyView Interface
EasyView Interface
Figure 1 – EasyView Display
Legend
1. Display
2. Set Point
3. Interlock
4. Service
5. Increment Button
6. Auto LED
7. AUTO Button
8. STOP Button
9. Decrement Button
1
2
3
4
5
6
7
8
9
RLC-SVU01B-E4
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EasyView Interface
Auto LED
The Auto LED is used to indicate the
position of the AUTO/STOP keys as
though they were a physical toggle
switch. When the AUTO key is
depressed, the Auto LED will be lit. If
the unit cannot enter the Auto mode,
that information will be conveyed by
the lighting of either the diagnostic
LED or the interlock LED. When the
STOP key is depressed, the Auto LED
will extinguish.
Set Point LED
The Set Point
LED is on solid when the display is
showing “Evaporator Leaving-Water
Set Point.”
Interlock LED
The interlock LED flashes when there
is an interlock condition.
Interlock is used to indicate that the
machine is prevented from running,
due to an external status that the
operator could probably correct, and
is not related to a chiller or
component failure. The interlock
conditions for RTAC are as follows:
Interlock Condition Code
No Chilled-Water Flow ED
External Auto/Stop 100
Low condenser start
inhibit 200
BAS Auto/Stop 300
Low-Ambient Start Inhibit 200
1
BAS here and elsewhere in this manual refers
to the Trane Tracer™ Equipment Controller.
The interlock LED will stop flashing
when the condition that prevents
machine operation is corrected. No
reset is required.
Service LED
The service LED flashes when there
is a diagnostic that is
not
an interlock
condition.
This is the standard diagnostic
indication of the machine. Contact a
qualified service agency to correct
the problem. Before calling, press
the (+) and (-) keys simultaneously to
determine the diagnostic code.
Record this code and report it to the
service agency. If you suspect that a
nuisance trip has occurred, the
diagnostic can be reset. (See section
on diagnostic reset.)
Inputs:
Increment Key (+)
Pressing the increment key while the
set point light is off will cause it to
turn on continuously and display the
Evaporator Leaving-Water
Temperature Set Point for three
seconds.
Pressing the increment key while the
Set Point light is on will increase it
by 0.1 degree (F or C).
Holding the increment key down will
increase it repeatedly at a rate of
5°F/sec [2.77°C/sec] until the Set
Point is equal to the Evaporator
Leaving-Water Set Point machine
maximum
Decrement Key (-)
Pressing the decrement key while
the set point light is off will cause it
to turn on continuously and the
display will display the Evaporator
Leaving-Water Temperature.
Pressing the decrement key while
the Set Point light is on will cause
the Set Point to decrease by 0.1
degree (F or C).
Holding the decrement key down will
decrease the set point repeatedly at
a rate of 2°F/sec [0.56°C/sec] until the
set point is equal to the Evaporator
Leaving-Water Set Point relative
minimum.
AUTO Key ( | )
Pressing the AUTO key will send a
request to the chiller to turn on. If no
other device or condition is
preventing the chiller from starting
and
there is a need to cool
, the
chiller will attempt a start. (See Auto
LED and diagnostic reset for further
description.)
STOP Key (O)
Pressing the STOP key will send a
request to the chiller to stop. The
chiller will then begin the shutdown
sequence and the Auto LED will
extinguish.
RLC-SVU01B-E4
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Diagnostic Reset
If the machine is in a
diagnostic condition
(LED is flashing), a
transition from Stop to Auto will
reset the diagnostic. If the machine is
in the Stop State (Auto LED off),
depressing the AUTO key will reset
all diagnostics. If the machine is in
the Auto State (Auto LED on), it must
be put in the Stop state and
sequenced back to Auto in order to
reset.
SI vs. English (I-P)
The Leaving-Water Set Point and the
Leaving-Water Temperature are
displayed in either SI or English (I-P)
units as determined by the
appropriate setting within the
processor. A right-justified C or F will
indicate SI or English.
Power-Up Test
On power-up, a means to test the
display and annunciators is required.
To demonstrate that all segments
and LEDs can be lighted, EasyView
will light all segments and
annunciators for approximately 2
seconds. To demonstrate that no
elements are stuck on, EasyView will
turn off all segments and
annunciators for approximately 2
seconds. Normal operation will
follow.
EasyView Interface
RLC-SVU01B-E4
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DynaView Interface
DynaView Interface
The DynaView and EasyView share
the same enclosure design:
weatherproof and durable plastic for
use as a stand-alone device on the
outside of the unit or mounted
nearby.
The display on DynaView is a 1/4
VGA display with a resistive touch
screen and an LED backlight. The
display area is approximately
4 inches wide by 3 inches high
[102 mm x 60 mm].
Key Functions
In this touch screen application, key
functions are determined completely
by software, and change depending
upon the subject matter currently
being displayed. The basic touchscreen functions are outlined below.
Radio Buttons
Radio buttons show one menu
choice among two or more
alternatives, all visible. (It is the
AUTO button in Figure 2.) The radiobutton model mimics the buttons
used on old-fashioned radios to
select stations. When one is pressed,
the one that was previously pressed
“pops out” and the new station is
selected. In the DynaView model the
possible selections are each
associated with a button. The
selected button is darkened,
presented in reverse video to
indicate it is the selected choice. The
full range of possible choices, as well
as the current choice, is always in
view.
Spin Value Buttons
Spin values are used to allow a
variable set point to be changed,
such as leaving-water set point. The
value increases or decreases by
touching the increment (+) or
decrement (-) arrows.
Action Buttons
Action buttons appear temporarily
and provide the user with a choice
such as Enter or Cancel.
Hot Links
Hot links are used to navigate from
one view to another view.
File-Folder Tabs
File-folder tabs are used to select a
screen of data. Just like tabs in a file
folder, these serve to title the folder
or screen selected, as well as to
provide navigation to other screens.
In DynaView, the tabs are in one row
across the top of the display. The
folder tabs are separated from the
rest of the display by a horizontal
line. Vertical lines separate the tabs
from each other. The folder that is
selected has no horizontal line under
its tab, thereby making it look like a
part of the current folder (as would
an open folder in a file cabinet). The
user selects a screen of information
by touching the appropriate tab.
Figure 2 – DynaView Display
Legend
1. File folder tabs
2. Page-by-page scroll up
3. Line-by-line scroll up/down
4. Page-by-page scroll down
5. Navigator
6. Reduce contrast/viewing angle
7. Radio buttons
8. Increase contrast/viewing angle
The file folder tabs across the top of
the screen are used to select the
various display screens.
Scroll arrows are added if more file
tabs (choices) are available. When
the tabs are at the left most position,
the left navigator will not show and
only navigation to the right will be
possible. Likewise when the right
most screen is selected, only left
navigation will be possible.
The main body of the screen is used
for description text, data, setpoints,
or keys (touch sensitive areas). The
Chiller Mode is displayed here.
The double up arrows cause a pageby-page scroll either up or down. The
single arrow causes a line by line
scroll to occur. At the end of the
page, the appropriate scroll bar will
disappear.
A double arrow pointing to the right
indicates more information is
available about the specific item on
that same line. Pressing it will bring
you to a subscreen that will present
the information or allow changes to
settings.
The bottom of the screen (Fixed
Display) is present in all screens and
contains the following functions. The
left circular area is used to reduce
the contrast/viewing angle of the
display. The right circular area is
used to increase the contrast/viewing
angle of the display. The contrast
may require re-adjustment at
ambient temperatures significantly
different from those present at last
adjustment.
The other functions are critical to
machine operation. The AUTO and
STOP keys are used to enable or
disable the chiller. The key selected is
in black (reverse video). The chiller
will stop when the STOP key is
touched and after completing the
Run Unload mode.
Touching the AUTO key will enable
the chiller for active cooling if no
diagnostic is present. (A separate
action must be taken to clear active
diagnostics.)
The AUTO and STOP keys take
precedence over the Enter and
Cancel keys. (While a setting is being
changed, AUTO and STOP keys are
recognized even if Enter or Cancel
has not been pressed.)
The ALARMS button appears only
when an alarm is present, and blinks
(by alternating between normal and
reverse video) to draw attention to a
diagnostic condition. Pressing the
ALARMS button takes you to the
corresponding tab for additional
information.
Controls Interface
Basic Screen Format
The basic screen format appears as:
8
1
2
3
4
5
6
7
5
Auto
Stop
Alarms
RLC-SVU01B-E4
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RLC-SVU01B-E4
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Front Panel Lockout
Feature
NOTE: The DynaView display and
Touch Screen Lock screen is shown
below. This screen is used if the
Display and touch screen and lock
feature is enabled. Thirty minutes
after the last keystroke, this screen is
displayed and the Display and Touch
Screen is locked out until the
sequence "159 <ENTER>" is pressed.
Until the proper password is entered,
there will be no access to the
DynaView screens including all
reports, setpoints, and
Auto/Stop/Alarms/Interlocks. The
password "159" is not programmable
from either DynaView or TechView.
Front Panel Display During
Cold Ambients
If the Display and Touch Screen Lock
feature is disabled, the following
screen is automatically displayed if
the DynaView Temperature is below
freezing and has been 30 minutes
after the last keystroke. Note: This
feature is provided to avoid
unintended actuations of the keypad,
which can occur due to ice build-up
on DynaView's exterior surfaces.
Also be aware that at extremes of
temperatures, the LCD display
screen will change its contrast from
the optimal adjustment made at
more normal temperatures.
It can appear washed out or blacked
out. Simply pressing the lower right
contrast control on the screen will
return the display to readable
condition.
NOTE: All screens shown in this
section are typical. Some screens
show all display options available,
only one of which may appear on a
line.
987
653
321
0
987
653
321
0
Controls Interface
DISPLAY AND TOUCH SCREEN ARE LOCKED
ENTER PASSWORD TO UNLOCK
Enter
Cancel
DISPLAY AND TOUCH SCREEN ARE LOCKED
ENTER “159 Enter”TO UNLOCK
Enter
Cancel
RLC-SVU01B-E4
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The Mode Screen is only found on
software revisions 18 and later. This
screen provides a display for the top
level operating mode for each of the
components and sub-components of
the chiller (i.e. Chiller, Circuits, and
Compressors) that exist on the
Chiller as it is configured. The modes
are displayed as text only without
the hex codes.
In software revisions 17.0 and earlier,
the top level mode and the sub
mode for each component was
displayed on the respective
component tab on the first two lines.
The mode display of the first 3 lines
of the Compressor and Chiller
Screen tabs is eliminated with the
addition of the Mode Screen.
Controls Interface
Modes Screen
Modes
Chiller
Compressor
Auto
Stop
Chiller Mode:
Circuit 1 Mode:
Cpsr 1A Mode:
Cpsr 1B Mode:
Circuit 2 Mode:
Cpsr 2A Mode:
Cpsr 2B Mode:
Running
Running - Limit
Running
Running
Run Inhibit
Stopped
Stopped
Table 1 - Chiller Modes
RLC-SVU01B-E4
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Description
The chiller is not running and cannot run without intervention. Further
information is provided by the sub-mode:
Chiller is stopped by DynaView (or EasyView). Stop button command
cannot be remotely overridden.
Chiller is stopped by DynaView (or EasyView). Panic Stop (by
pressing Stop button twice) - previous shutdown was manually
commanded to shutdown immediately without a run-unload or
pumpdown cycle - cannot be remotely overridden.
The chiller is stopped by a diagnostic that requires manual
intervention to reset.
The chiller is currently being inhibited from starting (and running), but
may be allowed to start if the inhibiting or diagnostic condition is
cleared. Further information is provided by the sub-mode:
The entire chiller is stopped by a diagnostic that may automatically
clear.
The chiller is inhibited from starting by Low Condenser TemperatureInhibit is active below either -3.9°C (can be disabled with proper
freeze protection) or -18°C (limit set by design, cannot be disabled).
As an exception, this will not stop a chiller already running.
The chiller is inhibited from starting (and running) by an outdoor air
ambient temperature lower than a specified temperature - per user
adjustable settings and can be disabled.
The chiller is inhibited from starting (and running) by the "external
stop" hardwired input.
The chiller is inhibited from starting (and running) by command from
a Building Automation System via the digital communication link
(com 3 or com 5).
This is a transient mode - 15-min. max, and is only possible if the
chiller is in the Auto - Remote command mode. After a power up
reset, it is necessary to wait for valid communication from a BAS
(Tracer) to know whether to run or stay inhibited. Either valid
communication will be received from the BAS (Tracer), or a
communication diagnostic ultimately will result. In the latter case the
chiller will revert to Local control.
Controls Interface
Chiller Modes
Stopped (1)
Local Stop (2)
Panic Stop (2)
Diagnostic Shutdown - Manual Reset (2)
Other sub-modes are possible in
conjunction with at least one of the above
modes - See items below.
Diagnostic Shutdown - Auto ResetStart
Inhibited by Low Cond Temp Start
Inhibited by Low Ambient Temp Start
Inhibited by External Source Start
Inhibited by BAS
Waiting for BAS Communications
Ice Building to Normal Transition
Ice Building is Complete
Design Note: Maximum Capacity was
eliminated as annunciated mode prior to
any release.
Run Inhibit (1)
Diagnostic Shutdown - Auto Reset (2)
Start Inhibited by Low Cond Temp (2)
Start Inhibited by Low Ambient Temp (2)
Start Inhibited by External Source (2)
Start Inhibited by BAS (2)
Waiting for BAS Communications (2)
RLC-SVU01B-E4
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Ice Building to Normal Transition (2)
Ice Building is Complete (2)
Auto (1)
Waiting For Evap Water Flow (2)
Waiting for Need to Cool (2)
Starting (1)
No Sub Modes Running (1)
Unit is Building Ice (2)
Running - Limited (1)
Capacity Limited by High Evap Water Temp
(2)
The chiller is inhibited from running for a brief period of time if it is
commanded from active ice building mode into normal cooling mode
via the ice building hardwired input or Tracer. This allows time for the
external system load to "switchover" from an ice bank to the chilled
water loop, and provides for a controlled pull down of the loop's
warmer temperature. This mode is not seen if the ice making is
automatically terminated on return brine temperature per the mode
below.
The chiller is inhibited from running as the Ice Building process has
been normally terminated on the return brine temperature. The chiller
will not start unless the ice building command (hardwired input or
BAS command) is removed or cycled.
The chiller is not currently running but can be expected to start at any
moment given that the proper conditions and interlocks are satisfied.
Further information is provided by the sub-mode:
The chiller will wait up to 4 minutes in this mode for evaporator water
flow to be established per the flow switch hardwired input.
The chiller will wait indefinitely in this mode, for an evaporator
leaving water temperature higher than the Chilled Water Setpoint plus
the Differential to Start.
The chiller is going through the necessary steps to allow the lead
circuit and lead compressor to start.
At least one circuit and one compressor on the chiller are currently
running. Further information is provided by the sub-mode:
The chiller is running in the Ice Building Mode, and either at or
moving towards full capacity available. Ice mode is terminated either
with the removal of the ice mode command or with the return brine
temperature falling below the Ice Termination Setpoint.
At least one circuit and one compressor on the chiller are currently
running, but the operation of the chiller as a whole is being actively
limited by the controls.
This mode will occur if both the OA temperature is above -4.4°C and
the Evaporator Leaving Water Temperature is above 23.9°C as is often
the case in a high temperature pull-down. While in this mode, no
compressors will be allowed to load past their minimum load
capacity step, but it will not inhibit compressor staging. This mode is
necessary to prevent nuisance trips due to Compressor Overcurrent
or High Pressure Cutout. Reasonable pull-down rates can still be
expected despite this limit.
Controls Interface
(1) Top level mode
(2) Sub-mode
RLC-SVU01B-E4
15
Controls Interface
Circuit Modes
Stopped (1)
Front Panel Lockout (2)
Diagnostic Shutdown - Manual Reset (2)
Other sub-modes are possible in
conjunction with at least one of the above
modes - See items below for their
descriptions: Diagnostic Shutdown - Auto
Reset Start Inhibited by External
SourceStart Inhibited by BAS
Run Inhibit (1)
Diagnostic Shutdown - Auto Reset (2)
Start Inhibited by External Source (2)
Start Inhibited by BAS (2)
Auto (1)
No Sub Modes
Starting (1)
No Sub Modes
Running (1)
Establishing Min. Cap - Low Diff pressure
(2)
Running - Limited (1)
Capacity Limited by High Cond Press (2)
Capacity Limited by Low Evap Rfgt Temp
(2)
Description
The given circuit is not running and cannot run without intervention.
Further information is provided by the sub-mode:
The circuit is manually locked out by the circuit lockout setting - the
nonvolatile lockout setting is accessible through either the DynaView
or TechView.
The circuit has been shutdown on a latching diagnostic.
The given circuit is currently being inhibited from starting (and
running), but may be allowed to start if the inhibiting or diagnostic
condition is cleared. Further information is provided by the submode:
The circuit has been shutdown on a diagnostic that may clear
automatically.
The circuit is inhibited from starting (and running) by its "external
circuit lockout" hardwired input.
The circuit is inhibited from starting (and running) by command from
a Building Automation System via the digital communication link
(com 3 or com 5).
The given circuit is not currently running but can be expected to start
at any moment given that the proper conditions and interlocks are
satisfied.
The given circuit is going through the necessary steps to allow the
lead compressor on that circuit to start.
At least one compressor on the given circuit is currently running.
Further information is provided by the sub-mode:
The circuit is experiencing low system differential pressure and is
being force loaded, irregardless Chilled Water Temperature Control, to
develop pressure sooner.
At least one compressor on the given circuit is currently running, but
the capacity of the circuit is being actively limited by the controls.
Further information is provided by the sub-mode:
The circuit is experiencing condenser pressures at or near the
condenser limit setting. Compressors on the circuit will be unloaded
to prevent exceeding the limits.
The circuit is experiencing saturated evaporator temperatures at or
near the Low Refrigerant Temperature Cutout setting. Compressors on
the circuit will be unloaded to prevent tripping.
Table 2 - Circuit modes
RLC-SVU01B-E4
16
Controls Interface
Capacity Limited by Low Liquid Level (2)
Shutting Down (1)
Operational Pumpdown (2)
Front Panel Lockout (2)
Diagnostic Shutdown - Manual Reset (2)
Diagnostic Shutdown - Auto Reset (2)
Start Inhibited by External Source (2)
Start Inhibited by BAS (2)
Service Override (1)
Service Pumpdown (2)
The circuit is experiencing low refrigerant liquid levels and the EXV is
at or near full open. The compressors on the circuit will be unloaded
to prevent tripping.
The given circuit is still running but shutdown is imminent. The circuit
is going through either a compressor run-unload mode or a circuit
operational pumpdown to dry out the evaporator (cold OA ambient
only). Shutdown is necessary due to one (or more) of the following
sub-modes:
The circuit is in the process shutting down by performing an
operational pumpdown just prior to stopping the last running
compressor. The EXV is commanded closed. Pumpdown will
terminate when both the liquid level and the evaporator pressure.
The circuit has been manually locked out by the circuit lockout setting
and is in the process of shutting down - the nonvolatile lockout setting is accessible through either the DynaView or TechView.
The circuit is in the process of shutdown due to a latching diagnostic.
The circuit is in the process of shutdown due to a diagnostic that may
automatically clear.
The circuit is in the process of shutdown due to a command from the
external circuit lockout hardwired input.
The circuit is in the process of shutdown due to a command from the
Building Automation System (e.g. Tracer)
The given circuit is in a Service Override mode
The circuit is running with fan control, via a manual command to
perform a Service Pumpdown. Its respective EXV is being held wide
open, but the manual liquid line service valve should be closed.
(1) Top level mode
(2) Sub-mode
RLC-SVU01B-E4
17
Compressor Modes
Stopped (1)
Diagnostic Shutdown - Manual Reset (2)
Service Tool Lockout (2)
Other sub-modes are possible in
conjunction with at least one of the above
modes - See items below for their
descriptions: Diagnostic Shutdown Auto
Reset Restart Inhibit
Run Inhibit (2)
Diagnostic Shutdown - Auto Reset (2)
Restart Inhibit (2)
Auto (1)
No Sub Modes
Starting (1)
No Sub Modes
Running (2)
Establishing Min. Capacity - High Oil Temp
(2)
Running - Limited (1)
Capacity Limited by High Current (2)
Description
The given compressor is not running and cannot run without
intervention. Further information is provided by the sub-mode:-
The compressor has been shutdown on a latching diagnostic.
The compressor has been shutdown due to a command from the
TechView Service Tool to be "locked out" and inoperative. This setting
is nonvolatile and operation can only be restored by using TechView
to "unlock" it.
The given compressor is currently being inhibited from starting (and
running*), but may be allowed to start if the inhibiting or diagnostic
condition is cleared. Further information is provided by the submode:
The compressor has been shutdown on a diagnostic that may clear
automatically.
The compressor is currently unable to start due to its restart inhibit
timer. A given compressor is not allowed to start until 5 minutes has
expired since its last start.
The given compressor is not currently running but can be expected to
start at any moment given that the proper conditions occur.
The given compressor is going through the necessary steps to allow
it to start. (This mode is short and transitory)
The given compressor is currently running. Further information is
provided by the sub-mode:
The compressor is running and is being forced loaded to its step load
point, without regard to the leaving water temperature control, to
prevent tripping on high oil temperature.
The given compressor is currently running, but its capacity is being
actively limited by the controls. Further information is provided by the
sub-mode:
The compressor is running and its capacity is being limited by high
currents. The current limit setting is 120% RLA (to avoid overcurrent
trips) or lower as set by the compressor's "share" of the active current limit (demand limit) setting for the entire chiller.
Controls Interface
Table 3- Compressor Modes
RLC-SVU01B-E4
18
Controls Interface
Capacity Limited by Phase Unbalance (2)
Shutting Down (1)
Diagnostic Shutdown - Manual Reset (2)
Diagnostic Shutdown - Auto Reset (2)
Service Tool Lockout (2)
The compressor is running and its capacity is being limited by
excessive phase current unbalance.
The given compressor is still running but shutdown is imminent. The
compressor is going through either a run-unload mode or is the
active compressor in the operational pumpdown cycle for its circuit.
Shutdown is either normal (no sub-mode displayed) or due the
following sub-modes:
The compressor is in the process of shutdown due to a latching
diagnostic.
The compressor is in the process of shutdown due to a diagnostic
that may clear automatically.
The compressor is in the process of shutdown due to a command
from the TechView Service Tool to be "locked out" and inoperative.
This setting is nonvolatile and operation can only be restored by
using TechView to "unlock" it.
(1) Top level mode
(2) Sub-mode
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