(VMA) 1400 Series Controllers Technical Bulletin

(VMA) 1400 Series Controllers Technical Bulletin
Technical Bulletin
Issue Date
11/01/01
TECHNICAL BULLETIN
Downloading and Commissioning the Variable Air Volume
Modular Assembly (VMA) 1400 Series Controllers
Downloading and Commissioning VMA1400 Series Controllers......2
Introduction......................................................................................................... 2
Key Concepts...................................................................................................... 3
Application Download Options.........................................................................................3
Controller Startup ............................................................................................................3
Diagnostics and Data Collection ......................................................................................4
Damper Actuator Polarity.................................................................................................4
Procedure Overview........................................................................................... 6
Detailed Procedures........................................................................................... 7
Downloading the Application to Each VMA Using HVAC PRO Software..........................7
Commissioning the VMA .................................................................................................8
Modifying Damper Direction to Close ..............................................................................8
Completing Downloading and Commissioning Tasks ......................................................9
© 2001 Johnson Controls, Inc.
Code No. LIT-6363130
www.johnsoncontrols.com
Software Release 8.3
2
Downloading and Commissioning the VMA1400 Series Controllers Technical Bulletin
Downloading and
Commissioning VMA1400 Series
Controllers
Introduction
This document provides procedures for downloading and
commissioning VMA1400 Series controllers.
Note:
This document focuses on the VMA1410, 1420, and
1430 controllers. The VMA1400 Series also includes the
VMA1440, which is used exclusively as part of the
Metasys Zoning Package. See the Metasys Zoning Package
Product Bulletin (LIT-639050) and the Metasys Zoning
Package Overview Technical Bulletin (LIT-639100) for
information on this specialized product. For specific
information on commissioning the Metasys Zoning Package,
see the Metasys Zoning Package Commissioning Technical
Bulletin (LIT-639250).
This document describes how to:
•
download the application to each VMA using
HVAC PRO software
•
commission the VMA
•
modify damper direction to close
•
complete downloading and commissioning tasks
Note:
Where this document refers to HVAC PRO software,
substitute EURO PRO in Europe.
For information on the using HVAC PRO and the VMA, refer to the
HVAC PRO User’s Guide and the Variable Air Volume Modular
Assembly (VMA) 1400 Series Application Note (LIT-6375125).
Downloading and Commissioning the VMA1400 Series Controllers Technical Bulletin
3
Key Concepts
Refer to the HVAC PRO User’s Guide for technical information on
downloading and commissioning the VMA.
Application Download Options
There are three general options available for downloading VMA
application software:
•
through the N2 Bus at a workstation
•
through the N2 Bus at the controller
•
through the Zone Bus at the room sensor
Note:
HVAC PRO software does not support VMA Code
(firmware) download over the Zone Bus or at a workstation
over the N2 Bus.
Downloading applications through the N2 Bus is much faster than
using the Zone Bus, but sometimes circumstances make downloading
at the room sensor more expedient. To verify proper functioning at
both controller and supervisory levels, commissioning procedures may
be required through the N2 Bus at the Network Controller and
Operator Workstation (OWS) levels, as well as at the VMA.
Controller Startup
After the VMA application is downloaded to the controller, the
application is archived to non-volatile memory. HVAC PRO software
Release 7.02 or later waits to report that the download is complete
until the archive has been completed.
IMPORTANT: When using earlier releases of HVAC PRO software,
wait an additional 60 seconds after HVAC PRO
software indicates that the download is complete to
allow the archiving process to occur before
disconnecting power to the controller.
4
Downloading and Commissioning the VMA1400 Series Controllers Technical Bulletin
The application performs an initial autocalibration after the controller
is reset. Controller reset occurs either after application download or
after power is cycled to the controller. This initial autocalibration
writes a value of Autorange 0 to the Autocal attribute of the integrated
stepper motor (if present). This causes the actuator to drive first to the
fully open and then to the fully closed position, and calculates the
stroke time based on the angle of rotation between the open and closed
endstops. While at the closed end stop, an offset is calculated to make
the pressure sensor read zero. Stroke time should conform to the
values listed in Table 7 in the Detailed Procedures section of the
Troubleshooting Variable Air Volume Modular Assembly (VMA) 1400
Series Controllers Technical Bulletin (LIT-6363135).
Diagnostics and Data Collection
Running diagnostics and collecting data should be done after the
complete system is operating. Also, remember that the Balancer may
produce data changes that must be properly reflected in all software
and documentation.
Damper Actuator Polarity
IMPORTANT: The damper actuator polarity should be established
upon installation of the VMA, using
HVAC PRO software. Incorrect damper positions in a
zone may result in misdiagnosis of readings, resulting
in unnecessary repetition of setup and diagnostics.
Many dampers seal properly only when closed in the rotation direction
specified by the manufacturer. To simplify maintenance, use the same
direction to close on all boxes of the same type.
To determine whether the damper is closed Clockwise (CW) or
Counterclockwise (CCW):
•
Visually verify which direction opens the damper before ductwork
is completed and note the information for future reference.
•
Check the damper model specifications. Appendix B: VAV
Controller Flow Calculation Constants Application Note
(LIT-6375185) contains information on many box types.
•
Once there is airflow in the zone, use HVAC PRO software to
command the damper actuator to 100%. If this causes the flow to
decrease, it is an indication that the polarity attribute must be
reversed from its current setting. Refer to the Testing and
Receiving Data from Controllers chapter of the HVAC PRO User’s
Guide for information on box flow testing.
Downloading and Commissioning the VMA1400 Series Controllers Technical Bulletin
Note:
5
In the VMA1400, the format of the damper override
command differs from the override command for other
incremental outputs. To override the damper output, enter a
value in the format ±xx%, where “+” and “-” indicate
direction and xx is the percentage of full stroke time that the
actuator will be driven. For example, if the stroke time is
defined as 30 seconds (VMA1400 default), an override
command of 50% drives the actuator open for 15 seconds.
IMPORTANT: The default software setting for damper actuator
polarity is set to rotate the damper CW to close. If the
damper closes in a CCW direction, the damper
actuator polarity must be changed. See Modifying
Damper Direction to Close in the Detailed Procedures
section of this document.
6
Downloading and Commissioning the VMA1400 Series Controllers Technical Bulletin
Procedure Overview
Table 1: Downloading and Commissioning the VMA1400 Series Controllers
To Do This
Follow These Steps:
Download the Application to
Each VMA Using
HVAC PRO Software
1.
2.
3.
4.
5.
6.
Commission the VMA
1.
2.
3.
4.
5.
6.
7.
Modify Damper Direction to
Close
1.
2.
3.
4.
5.
6.
Complete Downloading and
Commissioning Tasks
1.
2.
3.
4.
5.
6.
7.
8.
Verify that the N2 switches on the VMA are set for the proper
hardware or software N2 address according to project specifications.
Use Addresses 1-253 only.
Verify that the VMA and associated input/output devices are
mounted, wired, and connected properly, and that power is on.
If not downloading from the workstation, connect the laptop to the N2
using a CVTPRO, CVT (MM-CVT101), or IU9100 (Europe). If
downloading at the room sensor, use a CablePRO or CVTPRO.
Start the commissioning tool (HVAC PRO software). Set
communication port and bus type in the commissioning tool.
If downloading from the workstation, or across the N2 Bus, enter the
N2 device addresses.
Verify the communication selections and select the download
process. Download the appropriate applications to devices.
Verify that a configuration file is open in HVAC PRO software.
On the Options menu, click View > Commissioning to switch the
views option to the Commissioning view.
Access the current configuration.
Commission analog/binary inputs.
Commission analog/binary outputs.
Modify the Direction to Close attribute on the damper actuator if it is
incorrect.
Update the appropriate configuration file with any changes. Download
changes to the VMA that were not saved to the controller during
commissioning.
In HVAC PRO software, click the Outputs button.
In the Additional Outputs section of the Outputs list box, double-click
Damper Command.
Click the Point Attributes button.
In the Attributes List, double-click Direction to Close.
Change Direction to Close to Counterclockwise. Click OK.
Click Exit. Save the changes to the controller and the configuration
file.
On the Action menu, click Collect VAV Diagnostics.
Commission the current configuration and make any needed software
adjustments.
On the Action menu, click VAV Box Flow Test to ensure that the flow
sensor and damper are connected correctly.
When the system is functional and has been controlling for
eight hours or more, evaluate the system operation using Collect
VAV Diagnostics on the Action menu.
Save any configuration changes to file and exit commissioning.
Verify VMA points in the OWS.
Turn the system over to the Balancer.
Archive and document any wiring or configuration changes made
during commissioning or made by the Balancer.
Downloading and Commissioning the VMA1400 Series Controllers Technical Bulletin
7
Detailed Procedures
Downloading the Application to Each VMA Using
HVAC PRO Software
To download the application to each VMA using
HVAC PRO software:
1.
Verify that the N2 switches on the VMA are set for the proper
hardware or software N2 address according to project
specifications. Use Addresses 1-253 only.
Note:
If using software addressing, set the address switches to 0.
The N2 software address can be set over the Zone Bus using
HVAC PRO software or VBT (VMA1400 Balancer Tool)
software. See the HVAC PRO User’s Guide for more
information on software addressing.
2.
Verify that the VMA and associated input/output devices are
mounted, wired, and connected properly, and that the power is on.
3.
If not downloading from the workstation, connect the laptop to the
N2 using a CVTPRO, CVT (MM-CVT101), or IU9100 (Europe).
If downloading at the room sensor, use a CablePRO or CVTPRO.
4.
Start the commissioning tool (HVAC PRO software). Set
communication port and bus type in the commissioning tool.
5.
If downloading from the workstation or across the N2 Bus, enter
the N2 device addresses.
6.
Verify the communication selections and select the download
process. Download the appropriate applications to devices.
Note:
The Metasys Network does not support downloading the
VMA from the hardware focus window.
8
Downloading and Commissioning the VMA1400 Series Controllers Technical Bulletin
Commissioning the VMA
To commission the VMA:
1.
Verify that a configuration file is open in HVAC PRO software.
2.
On the Options menu, click View > Commissioning to switch the
views option to the Commissioning view.
3.
Access the current configuration.
4.
Commission analog/binary inputs.
5.
Commission analog/binary outputs.
6.
Modify the Direction to Close attribute on the damper actuator if
it is incorrect. (See Modifying Damper Direction to Close in this
section.)
7.
Update appropriate configuration file with any changes.
Download changes to the VMA that were not saved to the
controller during commissioning.
Modifying Damper Direction to Close
Note:
This procedure applies only to the integrated actuator. If an
external actuator is used (VMA1430, supply/exhaust, or dual
duct applications), the external actuator is driven with either
a Position Adjust Output (PAO) or Analog Output (AO).
For a PAO (3-wire/floating output), the Polarity attribute
serves the same purpose as the Direction to Close attribute of
the integrated actuator. For an AO (proportional output), the
Min Out Value and Max Out Value determine the voltage for
0 to 100% command.
To modify the damper direction to close:
1.
In HVAC PRO software, click the Outputs button.
2.
In the Additional Outputs section of the Outputs list box,
double-click Damper Command.
3.
Click the Point Attributes button.
4.
In the Attributes List, double-click Direction to Close.
5.
Change Direction to Close to Counterclockwise. Click OK.
6.
Click Exit. Save the changes to the controller and the
configuration file.
Downloading and Commissioning the VMA1400 Series Controllers Technical Bulletin
9
Completing Downloading and Commissioning Tasks
Note:
Loop tuning is automatic on the VMA.
To complete downloading and commissioning tasks:
Controls Group
507 E. Michigan Street
P.O. Box 423
Milwaukee, WI 53201
1.
On the Action menu, click Collect VAV Diagnostics.
2.
Commission the current configuration and make any needed
software adjustments.
3.
On the Action menu, click VAV Box Flow Test to ensure that the
flow sensor and damper are connected correctly.
4.
When the system is functional and has been controlling for
eight hours or more, evaluate the system operation, using Collect
VAV Diagnostics in the Action menu. Refer to Occupant
Hot/Cold Complaints in the Troubleshooting Variable Air Volume
Modular Assembly (VMA) 1400 Series Controllers Technical
Bulletin (LIT-6363135).
5.
Save any configuration changes to file and exit commissioning.
6.
Verify VMA points in Metasys OWS.
7.
Turn the system over to the Balancer.
8.
Archive and document any wiring or configuration changes made
during commissioning or made by the Balancer.
www.johnsoncontrols.com
Printed in U.S.A.
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising