Siemens 125-2134 User manual

Differential Pressure
Monitor Owner’s Manual
125-2134 Rev. DA, October 2006

Rev. DA, October 2006
NOTICE
The information contained within this document is subject to change without notice and should not be construed as a
commitment by Siemens Building Technologies, Inc. Siemens Building Technologies, Inc. assumes no responsibility
for any errors that may appear in this document.
All software described in this document is furnished under a license and may be used or copied only in accordance
with the terms of such license.
WARNING
This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance
with the instructions manual, may cause interference to radio communications. It has been tested and found to
comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to
provide reasonable protection against such interference when operated in a commercial environment. Operation of
this equipment in a residential area is likely to cause interference in which case users at their own expense will be
required to take whatever measures may be required to correct the interference.
SERVICE STATEMENT
Control devices are combined to make a system. Each control device is mechanical in nature and all mechanical
components must be regularly serviced to optimize their operation. All Siemens Building Technologies, Inc.branch
offices and authorized distributors offer Technical Support Programs that will ensure your continuous, trouble-free
system performance.
For further information, contact your nearest Siemens Building Technologies, Inc. representative.
Copyright 2006 by Siemens Building Technologies, Inc.
TO THE READER
Your feedback is important to us. If you have comments about this manual, please submit them to
[email protected]
APOGEE is a registered trademark of Siemens Building Technologies, Inc.
Product or company names mentioned herein may be the trademarks of their respective owners.
Country of Origin: US

Differential Pressure Monitor Owner’s Manual
Table of Contents
How To Use This Manual..............................................................................................IV
Manual Organization..................................................................................................IV
Manual Conventions..................................................................................................V
Manual Symbols ........................................................................................................V
Datamate Software....................................................................................................V
Getting Help...............................................................................................................VI
Where To Send Comments.......................................................................................VI
Product Overview .........................................................................................................1
Introduction...................................................................................................................1
Differential Pressure Monitor.....................................................................................1
Ordering Notes........................................................................................................2
Hardware Inputs ........................................................................................................2
Hardware Outputs......................................................................................................2
Components............................................................................................................3
Remote Pressure Transmitter....................................................................................4
Components............................................................................................................4
Applications...................................................................................................................7
Basic Operation.............................................................................................................7
Pressurization Modes................................................................................................7
Setting Pressurization Mode...................................................................................8
Pressurization Switchover.......................................................................................8
Pressure Alarms ........................................................................................................8
Protective Isolation/Positive Pressurization Mode – Application 701 and 702.......9
Infectious Isolation/Negative Pressurization Mode – Application 703 and 704......9
Door Alarm.................................................................................................................10
Sensor Failure Alarm.................................................................................................10
Alarm Sequence ........................................................................................................10
DPM Inputs and Outputs ...........................................................................................10
Calibration..................................................................................................................11
Application 790: Slave Mode....................................................................................11
Using Relay Outputs..................................................................................................11
Door Input..................................................................................................................12
Alarm LED..................................................................................................................12
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Table of Contents
Normal LED ...............................................................................................................12
Horn...........................................................................................................................12
Loop Signal (4-20 mA)...............................................................................................12
Point Database..............................................................................................................13
Overview....................................................................................................................13
Troubleshooting............................................................................................................19
Basic Service Information..........................................................................................19
Preventive Maintenance............................................................................................19
Safety Features..........................................................................................................20
FLN Trunk Connections Check ...................................................................................20
External Alarm Output Check......................................................................................21
Equipment Required..................................................................................................21
Procedure if RELAY MODE is set to NOPEN.........................................................22
Procedure if RELAY MODE is set to NCLOSE.......................................................22
Door Switch Input Check .............................................................................................23
Equipment Required..................................................................................................23
Procedure if DOOR SW MODE is set to NOPEN...................................................24
Procedure if DOOR SW MODE is set to NCLOSE.................................................24
CV Controller Pressure Mode Output Check.............................................................25
Equipment required ...................................................................................................25
DPM without a Pressure Mode Key Switch...............................................................25
Procedure if DO MODE is set to NOPEN...............................................................25
Procedure if DO MODE is set to NCLOSE.............................................................26
DPM with a Pressure Mode Key Switch....................................................................26
Procedure if DO MODE is set to NOPEN...............................................................26
Procedure if DO MODE is set to NCLOSE.............................................................27
RPC Pressure Mode Output Check.............................................................................28
Equipment required ...................................................................................................28
DPM with a Pressure Mode Key Switch....................................................................28
4-20 mA Signal Output Check......................................................................................30
Equipment Required..................................................................................................30
Procedure ..................................................................................................................30
Troubleshooting.........................................................................................................31
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Differential Pressure Monitor Owner’s Manual
ERROR STATUS Messages .........................................................................................34
Clearing an Error Condition.........................................................................................34
Glossary.........................................................................................................................35
Index...............................................................................................................................41
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How To Use This Manual
This manual is written for the owner and user of the Siemens Building Technologies, Inc.
Differential Pressure Monitor (DPM). This manual is designed to help you become familiar
with the monitor and its applications.
This chapter covers manual organization, manual conventions and symbols used in the
manual, and how to access help.
Manual Organization
This manual contains the following chapters:
•
•
•
•
•
•
Chapter 1 Product Overview, describes the components of the Differential Pressure
Monitor (DPM) and Remote Pressure Transmitter (RPT).
Chapter 2 Applications, describes the control applications available in the DPM.
Chapter 3 Point Database, defines the point database descriptors and includes
addresses and applications.
Chapter 4, Troubleshooting, describes corrective measures you can take should you
encounter a problem when using the DPM. For issues not covered in this chapter,
contact your local Siemens Building Technologies representative.
The Glossary describes the terms and acronyms used in this manual.
An Index assists you in finding information.
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How To Use This Manual
Manual Conventions
The following table lists conventions to help you use this manual in a quick and efficient
manner.
Convention Example
Numbered Lists (1,2,3…)
indicate a procedure with
sequential steps.
1. Turn OFF power to the field panel.
2. Turn ON power to the field panel.
3. Contact your local Siemens Building Technologies representative.
Actions that you should perform
are specified in boldface font. Type Ffor Field panels.
Click OK to save changes and close the dialog box.
Error and system messages are
displayed in Courier New font. The message Report Definition successfully renamed
appears in the status bar.
New terms appearing for the first
time are italicized. The Open Processor continuously executes a user-defined set of instructions called the control program.
Manual Symbols
The following table lists the symbols used in this Owner’s Manual to draw your attention to
important information.
Notation Symbol Meaning
WARNING: Indicates that personal injury or loss of life may
occur to the user if a procedure is not performed
as specified.
CAUTION: Indicates that equipment damage, or loss of data
may occur if the user does not follow a procedure
as specified.
Datamate Software
Datamate is a customer software tool for all controller communications. There are two
versions: Datamate Base, and Datamate Advanced.Datamate Base works on an IBM-
compatible Personal Computer (PC), or a Handheld PC or Pocket PC™ running Windows
CE. Datamate Advanced works only on an IBM-compatible Personal Computer. With
Datamate, you can backup, restore, and edit any APOGEE database (but only Datamate
Advanced allows you to edit points offline). Backing up and restoring a database can be
accomplished while connected to any APOGEE field panel, or to the Building Level Network
(BLN) or Floor Level Network (FLN) device in question. A modem and telephone lines can
also be used. Databases can be saved to a hard or floppy disk and kept for permanent
storage or used as backup.
For more information on Datamate software, refer to the appropriate user guide based on
which version of Datamate you are using (Base or Advanced), or contact your local Siemens
Building Technologies, Inc. representative.
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Differential Pressure Monitor Owner’s Manual
Getting Help
For more information about the Differential Pressure Monitor, contact your local Siemens
Building Technologies representative.
Where To Send Comments
Your feedback is important to us. If you have comments about this manual, please submit
them to [email protected]
These manuals, along with information about other Siemens products, services, and
technical training classes, can be obtained from your local Siemens Building Technologies
representative.
VI Siemens Building Technologies, Inc.

1
Product Overview
Introduction
Differential Pressure Monitor
The Differential Pressure Monitor (DPM) is a Siemens Building Technologies FLN product.
The DPM monitors the differential pressure between a room and an adjacent space, and
provides visual and audible alarms to alert a user of alarm conditions (Figure 1).
Normal
Alarm
Horn
Silence
No Isolation/
Neutral
Infectious Isolation/
Negative Pressure
SWITCH OVERRIDE DOOR OPEN
HIGH PRESSURE LOW PRESSURE
GENERAL FAILURE ANTEROOM
NEGATIVE ISOLATION
PROTECTIVE ISOLATION
INFECTIOUS ISOLATION
NEGATIVE PRESSURE
POSITIVE PRESSURE
INCHES OF H20
PRESSURE MODE KEY SWITCH
(OPTIONAL)
SEN0175R3
PORTABLE OPERATOR’S
TERMINAL PORT
NORMAL LED (GREEN)
ALARM LED (RED)
HORN SILENCE BUTTON
Figure 1. Differential Pressure Monitor.
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Differential Pressure Monitor Owner’s Manual
Ordering Notes
Differential Pressure Monitor with Keyed
Switch for negative pressurization. 547-005
Differential Pressure Monitor with Keyed
Switch for positive pressurization. 547-006
Differential Pressure Monitor without
Keyed Switch. 547-002
Related Equipment
Remote Pressure Transmitter for use with
the Differential Pressure Monitor. 547-003
Calibration tool for Remote Pressure
Transmitter. 547-004
Hardware Inputs
Digital
•
•
•
•
•
•
Remote pressure transmitter (2 for App. 702 and 704, patient room and anteroom)
Door switch (optional)
Hardware Outputs
Analog
4-20 mA pressure signal
2-value resistive signal to identify pressurization mode to Room Pressurization
Controller
Digital
Alarm relay
2-state signal for pressurization mode to Constant Volume Controller
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Chapter 1 – Hardware
Components
The components of the DPM include:
•
•
•
•
•
Liquid Crystal Display (LCD)
Light Emitting Diodes (LEDs) (2)
Horn Silence Button
Portable Operator’s Terminal Port
Pressure Mode Key Switch (optional)
LCD Messages
The LCD shows the differential pressure of the room in inches of H2O or Pascals. It also
shows the status of the DPM with the following messages:
LCD Message…Indicates that the…
LOW PRESSURE room differential pressure is below the user-
defined limit.
HIGH PRESSURE room differential pressure is above the user-
defined limit.
DOOR OPEN door to the occupied space is open if it is being
monitored.
GENERAL FAILURE RPT has lost power or the DPM is not receiving
the pressure signal from the RPT.
SWITCH OVERRIDE database points that determine pressurization
mode have been set from a field panel. This
overrides the pressure mode key switch position,
rendering it ineffective.
ANTEROOM LCD is displaying the anteroom pressure in
response to pressing the Horn Silence button, or
anteroom differential pressure is not being
maintained.
NO ISOLATION device is monitoring for neutral pressure.
PROTECTIVE ISOLATION /POSITIVE
PRESSURE device is monitoring for positive pressure (Applications 701 and 702).
INFECTIOUS ISOLATION/NEGATIVE
PRESSURE device is monitoring for negative pressure (Applications 703 and 704).
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Differential Pressure Monitor Owner’s Manual
LED Status
The LEDs indicate the following status:
LED color…Indicates that the DPM is operating in…
Green a normal condition.
Red an alarm condition.
Button Functions
The Horn Silence button on the DPM has the following functions:
Button Functions
Horn Silence •Pressing this button turns the alarm horn OFF
(applies to all applications).
•For Applications 702 and 704 only. The following
function applies to Applications 702 and 704 when
displaying the differential pressure of the anteroom:
Pressing the Horn Silence button for 5 seconds
displays the “ANTEROOM” descriptor and the
anteroom differential pressure on the LCD.
Pressure Mode Key Switch (Optional)
The Pressure Mode Key Switch (optional) allows the operator to locally select the pressure
mode.
Remote Pressure Transmitter
The Remote Pressure Transmitter (RPT) is a Siemens Building Technologies, Inc.
Laboratory Control product. The RPT (Figure 2) measures the difference in air pressure
between a room and the adjacent space. The RPT sends that measurement to the
Differential Pressure Monitor.
Components
The components of the RPT include (Figure 2):
•
•
•
Inside cover plate
Outside cover plate
Airflow tube
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Chapter 1 – Hardware
AIRFLOW TUBE
SEN0179R2
INSIDE
COVER PLATE
OUTSIDE
COVER PLATE
Figure 2. Remote Pressure Transmitter
Circuit Board
The printed circuit board of the RPT (Figure 3) is the pressure signal generating area. The
circuit board is not visible once the RPT is installed. The following components are hidden
once the RPT is installed:
•
•
24 Vac (wire receptacle)
Pressure signal (wire receptacle)
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Differential Pressure Monitor Owner’s Manual
+ -
1 2 3
+-
24V TRUNK
PIN #1
PIN #1
PRESSURE SIGNAL
TO DPM
SEN0177R1
Figure 3. RPT Circuit Board.
Operating and Power Specifications
Operating temperature 65°to 85°F (18.3°to 29.5°C)
Operating range 24 Vac, 50/60 Hz
Power consumption 1.4 VA, Class 2, at 24 Vac
Pressure Signal Output Definition and Specification
The pressure signal output is a digital pulse signal that represents the measured pressure
difference across the sensor.
Operating Range 0-5 volt rectangular wave, 0-10 KHz
Recommended Wire 2 Conductor, 18 AWG Shielded Cable.
Recommended max.
wire length 500 ft (152.4 m)
6 Siemens Building Technologies, Inc.

2
Applications
Basic Operation
The DPM provides technology for monitoring differential pressure between a room and an
adjacent space (anteroom). The DPM displays the pressurization mode, the differential
pressure (optional) and all alarms, and the differential pressure of the anteroom. Each of the
alarms is annunciated by a horn.
Application 701 and 702 help healthcare facilities meet the Center for Disease Control’s
recommendations for hospital isolation rooms. One or two Remote Pressure Transmitter(s)
(RPT) are wired to the DPM and measures the differential pressure between each isolation
room and the adjacent space.
In Application 703 and 704 are used in Laboratories, the Differential Pressure Monitor (DPM)
monitors the differential pressure of an occupied room and the anteroom. The DPM also
monitors the occupied room’s entry door position (optional). One or two Remote Pressure
Transmitter(s) (RPTs) are wired to the DPM and measure the differential pressure between
each room and its adjacent space.
Pressurization Modes
The DPM has three pressurization modes; the active mode is displayed in the DPM’s LCD.
Protective Isolation/Positive Pressurization –The DPM expects to detect air leaving the
patient room. This is achieved by supplying more air to the room than is being exhausted so
that contagious airborne pathogens are prevented from entering the room. The DPM monitors
the differential pressure, measured by the RPT, and compares it to the user-defined positive low
pressure limit. An alarm condition is created when the differential pressure falls below this limit.
Infectious Isolation/Negative Pressurization –The DPM expects to detect air entering the
patient room. This is achieved by exhausting more air from the room than is being supplied
so that contagious airborne pathogens are prevented from leaving the room. The DPM
monitors the differential pressure, measured by the RPT, and compares it to the user-defined
negative high pressure limit. An alarm condition is created when the differential pressure
becomes less negative than this limit.
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Differential Pressure Monitor Owner’s Manual
No Isolation –The DPM expects to detect no air entering or leaving the patient room. This is
achieved by exhausting the same amount of air that is being supplied to the room. The DPM
monitors the differential pressure, measured by the RPT, but does not compare it to the user
defined pressure limits. While in No Isolation, the DPM does not alarm.
Setting Pressurization Mode
The pressurization mode can be set using the Pressure Mode Key Switch, the Portable
Operator’s Terminal, or the network.
A Constant Volume Controller can be used to pressurize the anteroom in the opposite mode
of the patient room (Application 702 only).
Pressure Mode Key Switch (optional) – The pressurization mode may be set by changing
the position of the switch using the key. Two modes are available:
•
•
Protective Isolation/Positive Pressurization and No Isolation
Infectious Isolation/Negative Pressurization and No Isolation
Database Points – The pressurization mode may be set by using the network to override
database points. This method overrides the Pressure Mode Key Switch (if present) and
renders the switch ineffective until the points are released by an operator. The LCD will
display the status message SWITCH OVERRIDE when a Pressure Mode Key Switch is present.
The SWITCH OVERRIDE message will not appear with the keyless version of the DPM.
Pressurization Switchover
Whenever the pressurization mode is changed, pressurization in the controlled rooms
changes and requires time to stabilize. When switchover begins, the DPM ignores abnormal
pressurization for a defined amount of time. The DPM will check status, if pressurization is
still abnormal, the DPM will wait a defined amount of time before triggering an alarm.
During switchover, the DPM’s LCD continues to display the original pressurization mode and
flashes the new pressurization mode, and the Normal LED is turned off. Once switchover
time is complete, the LCD displays only the new pressurization mode, and the Normal LED is
turned on, assuming the room has also switched and is controlling properly.
Pressure Alarms
An alarm condition can exist whenever the pressurization mode is set to either Protective or
Infectious Isolation. The following situations will cause an alarm:
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Chapter 2 – Applications
Protective Isolation/Positive Pressurization Mode – Application 701 and 702
NOTE: It is normal for the room pressure reading to briefly go beyond the alarm limits and
then return to the desired range. This condition is caused by:
•
•
•
•
•
•
Opening the door
Walking past the sensor
Changing airflow supplied to or exhausted from the room
Set the alarm delay long enough that these normal occurrences do not cause
false alarms.
Isolation/Occupied Room
If the differential pressure falls below the low limit and remains so longer than the time set in
the alarm delay, the low pressure alarm will turn on and the DPM’s LCD displays LOW
PRESSURE. The alarm clears when the differential pressure rises above the low limit and the
DPM’s LCD no longer displays LOW PRESSURE.
Anteroom
If the differential pressure falls below the low limit and remains so longer than the time set in
the alarm delay, the low pressure alarm will turn on and the DPM’s LCD displays LOW
PRESSURE and ANTEROOM. The alarm clears when the differential pressure rises above the low
limit and the DPM’s LCD no longer displays LOW PRESSURE and ANTEROOM.
Infectious Isolation/Negative Pressurization Mode – Application 703 and 704
NOTE: It is normal for the room pressure reading to briefly go beyond the alarm limits and
then return to the desired range. This condition is caused by:
Opening the door
Walking past the sensor
Changing airflow supplied to or exhausted from the room
Set the alarm delay long enough that these normal occurrences do not cause
false alarms.
Isolation/Occupied Room
If the differential pressure rises above the high limit and remains so longer than the time set
in the alarm delay, the high pressure alarm will turn on and the DPM’s LCD displays HIGH
PRESSURE.
The alarm clears when the differential pressure falls below the high limit and the DPM’s LCD
no longer displays HIGH PRESSURE.
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Differential Pressure Monitor Owner’s Manual
Anteroom
If the differential pressure rises above the high limit and remains so longer than the time set
in the alarm delay, the high pressure alarm will turn on and the DPM’s LCD displays HIGH
PRESSURE and ANTEROOM.
The alarm clears when the differential pressure falls below the high limit and the DPM’s LCD
no longer displays HIGH PRESSURE and ANTEROOM.
Door Alarm
When the door is open the DPM’s LCD displays DOOR OPEN. If the door remains OPEN longer
than the time set in the door delay the alarm turns on.
The alarm clears if the door is closed and the DPM’s LCD will no longer display DOOR OPEN.
Sensor Failure Alarm
If one or both of the RPTs lose power or fails the DPM’s LCD displays GENERAL FAILURE.
The alarm clears when one or both RPTs return from power loss or failure. The DPM’s LCD
no longer displays GENERAL FAILURE.
Alarm Sequence
When the DPM detects the alarm conditions described in Pressure Alarms or Sensor Failure
Alarm, ALARM STATUS (Point 26) changes from NORMAL to ALARM and:
•
•
•
•
Normal LED (green) turns OFF.
Alarm LED (red) turns ON and flashes.
If it has not been disabled, the horn sounds. To silence the horn, push the Horn
Silence button on the front cover of the DPM. The horn will not sound again until all
alarm conditions have cleared (ALARM STATUS returns to NORMAL) and a new
alarm is present (ALARM STATUS changes from NORMAL to ALARM).
The LCD displays the appropriate alarm status message.
DPM Inputs and Outputs
Door Switch Input – Leaks should be minimized to maintain room pressurization. One
contributor to leaks is the entry door. If using a door contact switch, a door delay is activated
when the door is opened to allow the door a chance to close before activating the alarm. This
minimizes nuisance alarms due to door position.
Alarm Relay Output – The DPM’s alarm relay output is used for remote monitoring of alarms.
The contact relates to how the alarm is powered and wired.
10 Siemens Building Technologies, Inc.