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Siemens 125-2134 Owner's Manual

Differential pressure monitor
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Differential Pressure
Monitor Owner's Manual
125-2134
Rev. DA, October 2006

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  Summary of Contents for Siemens 125-2134

  • Page 1 Differential Pressure Monitor Owner’s Manual 125-2134 Rev. DA, October 2006...
  • Page 3 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.
  • Page 5: Table Of Contents

    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 Siemens Building Technologies, Inc.
  • Page 6 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 Siemens Building Technologies, Inc.
  • Page 7 Differential Pressure Monitor Owner’s Manual ERROR STATUS Messages ..................34 Clearing an Error Condition..................34 Glossary.........................35 Index ..........................41 Siemens Building Technologies, Inc.
  • Page 8: How To Use This Manual

    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.
  • Page 9: Manual Conventions

    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. Siemens Building Technologies, Inc.
  • Page 10: Getting Help

    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 SBT_technical.editor.us.sbt@siemens.com...
  • Page 11: 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).
  • Page 12: Ordering Notes

    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 Siemens Building Technologies, Inc.
  • Page 13: Components

    NO ISOLATION device is monitoring for neutral pressure. PROTECTIVE ISOLATION /POSITIVE device is monitoring for positive pressure PRESSURE (Applications 701 and 702). INFECTIOUS ISOLATION/NEGATIVE device is monitoring for negative pressure PRESSURE (Applications 703 and 704). Siemens Building Technologies, Inc.
  • Page 14: Remote Pressure Transmitter

    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.
  • Page 15 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) Siemens Building Technologies, Inc.
  • Page 16 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. 500 ft (152.4 m) wire length Siemens Building Technologies, Inc.
  • Page 17: Applications

    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. Siemens Building Technologies, Inc.
  • Page 18: Setting Pressurization Mode

    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: Siemens Building Technologies, Inc.
  • Page 19: Protective Isolation/Positive Pressurization Mode - Application 701 And 702

    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 Siemens Building Technologies, Inc.
  • Page 20: Door 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. Siemens Building Technologies, Inc.
  • Page 21: Calibration

    DPM and entered into the calibration points in the database. For further details, including guidelines for developing a calibration schedule, contact your local Siemens Building Technologies field office. Application 790: Slave Mode Application 790 is the slave mode application for the DPM. Slave Mode is the state of the DPM when it is shipped from the factory.
  • Page 22: Door Input

    Horn, will normally be OFF. If desired, this point can be turned on or off from the field panel. Loop Signal (4-20 mA) The loop signal for zero pressure differential will be 12.0625 mA. If desired, the field panel can use this signal for local control. Siemens Building Technologies, Inc.
  • Page 23: Point Database

    Descriptor Address Application Description CTLR ADDRESS 701, 702, Identifies the DPM on the Siemens Building Technologies FLN 703, 704, 790 trunk. Valid entries: 0-31, 99. APPLICATION 701, 702, Identification number of the program operating in the DPM. 703, 704, 790 Valid entries: 701, 702, 703, 704, 790.
  • Page 24 CAL TIME (Point 44). DP1 RAW is sampled for averaging when CAL DP1 (Point 42) is set to DONE. When CAL TIME has elapsed, the average value of DP1 RAW for this time period will be displayed in this field. Siemens Building Technologies, Inc.
  • Page 25 Represents the field calibration differential pressure, as read from 703, 704 DP1 RAW (Point 68), when the Remote Pressure Transmitter calibrator is set to the MAXimum differential pressure (-0.170 in. of water, -42.34 Pascals) for negative pressurization. Siemens Building Technologies, Inc.
  • Page 26 When calibrating the sensor, the direction of flow through the sensor needs to be verified. If DIFF PRES2 (Point 31) is reading a negative value when it should read positive, and this point is set to LO, toggle the point from LO to HI. Siemens Building Technologies, Inc.
  • Page 27 Turns on all visual and audible user interface devices on the 703, 704, 790 DPM and energizes the alarm output. ERROR STATUS 701, 702, Status code which indicates any errors detected during controller 703, 704, 790 power-up. A status of 0 indicates there are no problems. Siemens Building Technologies, Inc.
  • Page 28 Differential Pressure Monitor Owner’s Manual Siemens Building Technologies, Inc.
  • Page 29: Troubleshooting

    Differential Pressure Monitor (DPM). You are not required to do any monitor troubleshooting. You may wish to contact your local Siemens Building Technologies representative if a problem occurs or if you have any questions about the DPM.
  • Page 30: Safety Features

    It is normal for the RX LED to be steadily illuminated if there is not an FLN trunk connected to the controller or the field panel. FLN TRUNK PIN # 1 2 3 Figure 4. FLN Trunk Wiring. Siemens Building Technologies, Inc.
  • Page 31: External Alarm Output Check

    Portable Operator’s Terminal (POT) and cable. 1. Connect the POT to the monitor’s communication port. If you are unable to establish communication with the monitor, contact your local Siemens Building Technologies representative. 2. Turn the meter on and set it to monitor resistance (ohms, Ω).
  • Page 32: Procedure If Relay Mode Is Set To Nopen

    ALARM OUT should display OFF and the meter should indicate an open circuit. • If either ALARM OUT or the meter does not indicate a change in value, contact your local Siemens Building Technologies representative. 4. Set ALARM STATUS to ALARM. •...
  • Page 33: Door Switch Input Check

    3. Scroll so that the display shows DOOR SWITCH (Point 28), DOOR SW MODE (Point 34), and DOOR POSN (Point 32). PIN# 1 7 8 9 10 11 12 13 14 Door Switch Figure 4-1 Figure 6. Door Switch Input Point. Siemens Building Technologies, Inc.
  • Page 34: Procedure If Door Sw Mode Is Set To Nopen

    4. Remove the jumper wire from one of the terminals. • Verify that DOOR POSN is CLOSED. 5. If DOOR POSN does not toggle OPEN and CLOSED, contact your local Siemens Building Technologies representative. Procedure if DOOR SW MODE is set to NCLOSE.
  • Page 35: Cv Controller Pressure Mode Output Check

    DPM without a Pressure Mode Key Switch 1. Connect the POT to the monitor’s communication port. If you are unable to establish communication with the monitor, contact your local Siemens Building Technologies representative. 2. Turn the meter on and set it to monitor resistance (ohms, Ω).
  • Page 36: Procedure If Do Mode Is Set To Nclose

    DPM with a Pressure Mode Key Switch 1. Connect the POT to the monitor’s communication port. If you are unable to establish communication with the monitor, contact your local Siemens Building Technologies representative. 2. Select the Start Up report from the Reports Menu.
  • Page 37: Procedure If Do Mode Is Set To Nclose

    4. Turn the key to the Infectious Isolation/Negative Pressure position. • The meter should indicate a closed circuit. If the meter does not change in value, contact your local Siemens Building Technologies representative. 5. Turn the key to the Protective Isolation/Positive Pressure position. •...
  • Page 38: Rpc Pressure Mode Output Check

    Portable Operator’s Terminal (POT) and cable with the Controller Interface Software loaded and running. 1. Connect the POT to the monitor’s communication port. If you are unable to establish communication with the monitor, contact your local Siemens Building Technologies representative. 2. Select the Start Up report from the Reports Menu.
  • Page 39 Chapter 4 – Troubleshooting PIN# 1 7 8 9 10 11 12 13 14 Pressure Mode Figure 8. RPC Pressure Mode Point. Siemens Building Technologies, Inc.
  • Page 40: 4-20 Ma Signal Output Check

    Portable Operator’s Terminal (POT) and cable. Procedure 1. Connect the POT to the monitor’s communication port. If you are unable to establish communication with the monitor, contact your local Siemens Building Technologies representative. 2. Select the HW POINTS report from the Reports Menu.
  • Page 41: Troubleshooting

    Figure 9. 4-20 mA Signal Output Point. Troubleshooting Find the symptom that best describes the problem. Perform the corrective action that follows. If the problem persists, contact your local Siemens Building Technologies representative. A. DP1 FAIL (Point 16) reads ON at the POT and GENERAL FAILURE displayed on the LCD.
  • Page 42 (positive) value. 1. Check that the sensor is not exposed to any drafts that may bias the sensor reading. Contact your local Siemens Building Technologies representative if sensor relocation is necessary. 2. Toggle SIG1 PHASE (Point 67) from LO to HI (or from HI to LO) depending on its current setting.
  • Page 43 3. Check continuity of the door contact switch when door is open and closed. 4. Check continuity of the wires between the door contact switch and the monitor. 5. Contact your local Siemens Building Technologies representative. H. The Door Alarm is ON whenever the door is used to enter or exit the room.
  • Page 44: Error Status Messages

    To clear an error condition, initialize the monitor by pressing F2 on the POT. If any of the error conditions listed in Table 2 reappears in the POT display, repeat the initialize procedure. If the error recurs after initializing the monitor a second time, contact your local Siemens Building Technologies representative. Siemens Building Technologies, Inc.
  • Page 45: Glossary

    Chapter 3 - Point Database in this manual. For definitions of commonly used terms, as well as acronyms and abbreviations associated with the APOGEE Automation System, see the Siemens Building Technologies Technical Glossary of Building Controls Terminology and Acronyms, (125-2185). This book is available from your local Siemens Building Technologies representative.
  • Page 46 Device containing a microprocessor for centralized control of system components and equipment controllers. A field panel samples and processes field data, initiates control actions, communicates with its operators, and generates reports, displays, and warnings. Hertz. Measurement of frequency of alternating current. Siemens Building Technologies, Inc.
  • Page 47: Infectious Isolation

    Human-Machine Interface. Device and an interface program which allows the operator to communicate with a field panel, equipment controller, or Differential Pressure Monitor. network Collection of field panels and/or computers which are connected to communicate with each other and share information, control, and manage functions. Siemens Building Technologies, Inc.
  • Page 48: No Isolation

    For example, this type of isolation is used with patients that are burn victims. Room Pressurization Controller. Remote Pressure Transmitter. SI units Systeme International d’Unites. The international metric system. Siemens Building Technologies, Inc.
  • Page 49: Slave Mode

    Terminal Equipment Controller. Terminal Equipment Controller Siemens Building Technologies product family of equipment controllers (Room Pressurization Controller and Constant Volume Controller, for example) that house the applications software used to control terminal units, such as heat pumps, VAV terminal boxes, fan coil units, unit ventilators, etc.
  • Page 50 Differential Pressure Monitor Owner’s Manual virtual points Points which the system uses to store information not connected to a physical device. Siemens Building Technologies, Inc.
  • Page 51: Index

    7 troubleshooting ..........19 INFECTIOUS ISOLATION......... 3 Differential Pressure Monitor, definition .....1 digital output 2-state signal ..........2 alarm relay Single Sensor Operation.......2, 10 messages ............3 analog pressure..........11 LCD, description ..........3 door alarm ............10 door input Siemens Building Technologies, Inc.
  • Page 52 Pressure Mode Key Switch, description ....4 pressurization mode infectious isolation ..........7 protective isolation...........7 troubleshooting setting .............8 Differential Pressure Monitor ....... 19 Single Sensor Operation Healthcare Application........7 pressurization switchover using relay outputs, Slave Mode ..... 11 Dual Sensor Operation Healthcare Application........8 Siemens Building Technologies, Inc.

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