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Two-State Constant Volume
Owner's Manual
125-5033
Rev. AA, September 2007

Summary of Contents

  • Page 1

    Two-State Constant Volume Fume Hood Controller Owner’s Manual 125-5033 Rev. AA, September 2007...

  • Page 3

    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.

  • Page 5: Table Of Contents

    Venturi Air Valves ... 6 Electronic Actuator Assembly ... Err or! Bookmark not defined. Pneumatic Actuator ... 8 Analog Output-Pneumatic (AO-P) Module ... 9 Differential Pressure Transmitter ... 10 Airflow Sensor ... 10 Cables ... 10 Siemens Building Techologies, Inc.

  • Page 6: Table Of Contents

    Pneumatic Actuator ... 16 AO-P Module ... 16 Point Database ... 17 Troubleshooting ... 20 Basic Service Information ... 20 Preventive Maintenance ... 20 Safety Features ... 21 Controller LEDs ... 21 Glossary ... 22 Index ... 26 Siemens Building Technologies, Inc.

  • Page 7

    Courier New font. New terms appearing for the first time are italicized. Siemens Building Techologies, Inc. Example Type F for Field panels. Click OK to save changes and close the dialog box. The message Report Definition successfully renamed appears in the status bar.

  • Page 8

    Siemens Building Technologies, Inc. representative. Getting Help If at any time you find that you need help with a Laboratory Room Controller issue not covered in this manual, contact your local Siemens Building Technologies, Inc. representative. Where To Send Comments Your feedback is important to us.

  • Page 9: Product Overview, Introduction, Related Equipment, Electronic Actuation, Pneumatic Actuation

    Electronic Actuation • Electronic Actuator Assembly (See NOTE) Pneumatic Actuation • Analog Output-Pneumatic (AO-P) Module (See NOTE) • Pneumatic Actuator (See NOTE) NOTE: These components may be included in the Laboratory Exhaust Terminal or Venturi Air Valve. Siemens Building Technologies, Inc.

  • Page 10: Ordering Notes

    Fume Hood Controller Owner's Manual Table 1. Fume Hood Controller – Electronic Output Applications. Application Description 2 Position Fume Hood Controller Ordering Notes Fume Hood Controller – Electronic Output (940) 546-00750 Figure 1. Fume Hood Controller Board . Siemens Building Technologies, Inc.

  • Page 11: Hardware Inputs, Analog, Digital, Hardware Outputs, Analog, Digital, Power Wiring, Communication Wiring

    The controller connects to the field panel by means of a Field Level Network (FLN) trunk. Communication wiring connects to the three screw terminals on the controller labeled “+” (positive), “-“ (negative), and “S” (Shield) (Figure 3). Siemens Building Technologies, Inc. Product Overview...

  • Page 12: Controller Led Indicators, Operator Display Panel (odp)

    Indicates, when flashing, that the controller is receiving information from the field panel. Indicates, when flashing ON and OFF once per second, that the controller is functioning properly. FLN TRUNK (SHIELD) Indication Siemens Building Technologies, Inc.

  • Page 13: Laboratory Exhaust Air Terminal

    Analog Output-Pneumatic (AO-P) Module, and butterfly damper in a 20 gauge 316 stainless steel duct section. This arrangement provides fast acting, stable, and precise VAV fume hood exhaust airflow control. Siemens Building Technologies, Inc. Figure 4. Operator Display Panel. Product Overview...

  • Page 14: Venturi Air Valves

    See Figure 6. This assembly combines the orifice plate flow sensor, differential pressure transmitter, Electronic actuator and a Venturi Air Valve. This arrangement provides fast acting, stable, and precise exhaust airflow control. Figure 5. Laboratory Exhaust Air Terminal. Figure 6. Single-Body Venturi Air Valve. Siemens Building Technologies, Inc.

  • Page 15

    CAUTION: Due to the design parameters and the response time required by the Fume Hood Controller, the assembly must be replaced with the same part or a Siemens Building Technologies, Inc. approved equivalent. Any modifications that are not approved may affect the safety and performance of the Fume Hood Controller.

  • Page 16

    Due to the design, parameters and the response times required by the Fume Hood Controller, the No. 3 actuator always must be replaced with the same part or a Siemens Building Technologies, Inc. approved equivalent. Any modifications that are not approved may affect the safety and performance of the Fume Hood Controller.

  • Page 17: Analog Output-pneumatic (ao-p) Module

    See Figure 9. Minimum air supply to the AO- P Module is 18 psi and the maximum is 30 psi. The valves are rated for 24 Vac. Siemens Building Technologies, Inc. Figure 8. Pneumatic Actuator.

  • Page 18: Differential Pressure Transmitter, Airflow Sensor, Cables

    ODP. For more information, see the Fume Hood Controller Operator Display Panel User's Card (125-1976). The 9-pin connector plugs in the communication port of the portable operator's terminal. For more cable information, contact your local Siemens Building Technologies, Inc. representative.

  • Page 19: Applications, Fume Hood Controller: 2-position Constant Volume

    ODP (Operators Display Panel), Digital Input, an exhaust airflow sensor, and the controller setpoints (Figure 10). Figure 10. Application 940 Control Drawing shown using a damper. Siemens Building Technologies, Inc.

  • Page 20: Basic Operation, High And Low Exhaust Flow Control, Control Loops, Calibration

    For values of 0% to -100%, the controller sends an increasing percentage of the full signal length to the supply solenoid. Calibration Air Velocity Sensor - Calibration of the controller's air velocity sensor is periodically required to maintain accurate air velocity readings. Siemens Building Technologies, Inc.

  • Page 21: Do3 Output Functionality, Warning And Alarm Features, Warning Operation, Alarm Operation

    APOGEE alarm features. NOTE: Central alarms only work if the field panel is specifically set up to receive and distribute the alarm information. Consult your local Siemens Building Technologies, Inc. representative for more information on central alarming. Warning Operation The Fume Hood Controller announces warning conditions at the ODP.

  • Page 22: Alarm Strategies, Emergency Purge Feature, Emergency Purge Operation

    The Emergency Purge sequence is canceled by pressing the Emergency Purge button a second time. The ODP indicates an Emergency Purge sequence in three ways: • The red LED illuminates. • The horn sounds. • EMERGENCY PURGE and EEE display. Siemens Building Technologies, Inc.

  • Page 23: Emergency Purge Strategies

    Base this on the types of accidents anticipated, the reason you require a maximum purge, and the reason you want to switch it down to a controlled purge. Siemens Building Technologies, Inc. Applications...

  • Page 24: Fail-safe Operation, Fume Hood Controller, Differential Pressure Transmitter, Electronic Actuator Assembly, Pneumatic Actuator, Ao-p Module

    In addition to setting up the purge sequence to effectively handle the exhaust needs, decisions must be made on how to use the information available at the central reporting station. Consult your local Siemens Building Technologies, Inc. representative for more information on central reporting and trending of emergency purge information.

  • Page 25: Point Database

    HI WARN LMT LOW WARN LMT LOW ALM LMT EMER TIMER Siemens Building Technologies, Inc. Description Identifies the controller on the FLN trunk. Valid values: 0 through 98. The identification number of the Application running in the controller. This point displays an ON or OFF status. When the exhaust flow goes below the value specified at LOW ALM LMT for the time specified in ALARM TIME, the point goes into an alarm state (ON);...

  • Page 26

    Controls the function of the ODP display. It will display either CFM divided by 10 or HI FLOW / LO FLOW. Controls the function of the DO3. It will follow either the HI/LO setpoint or the alarm status. Siemens Building Technologies, Inc.

  • Page 27

    ALARM TIME DUCT AREA LOOP TIME ERROR STATUS Siemens Building Technologies, Inc. Description Indicates if the lower left button on the ODP has been pressed. This is a toggle action digital input; when pressed, the controller changes between HI and LOW flow setpoints.

  • Page 28: Troubleshooting, Basic Service Information, Preventive Maintenance

    Fume Hood Controller. For issues not covered in this section, contact your local Siemens Building Technologies, Inc. representative. You are not required to do any controller troubleshooting. Contact your local Siemens Building Technologies, Inc. representative if a problem occurs or you have any questions about the controller.

  • Page 29: Safety Features, Controller Leds

    LEDs located on the circuit board. See the Controller LED lndicators section of Chapter 1, Product Overview for more information about LEDs. NOTE: The TX and RX LEDs indicate communication over the FLN. Siemens Building Technologies, Inc. Troubleshooting...

  • Page 30: Glossary

    APOGEE Automation System, see the Technical Glossary of Building Controls Terminology and Acronyms, (125-2185). This book is available from your local Siemens Building Technologies, Inc. representative. Analog Input. An AI point is a physical point which accepts a continuous variable signal.

  • Page 31

    Output of the control loop expressed as a percentage. Liters Per Second. OCC mode OCCupied mode. OFF text Text indicating the de-energized state of a digital point (for example, OFF, CLOSED, NO). Siemens Building Technologies, Inc.

  • Page 32

    (engineering units). Slope and intercept constants are determined by the type of field input/output represented by the physical or virtual point. stand-alone control The type of control offered by a controller that is providing independent DDC control to a space. Siemens Building Technologies, Inc.

  • Page 33

    Glossary Terminal Equipment Controller Siemens Building Technologies, Inc. product family of equipment controllers (one is the Unit Conditioner Controller – Electronic Output) that house the applications software used to control terminal units, such as heat pumps, VAV terminal boxes, fan coil units, unit ventilators, etc.

  • Page 34: Index

    ... 14 Field Level Network (FLN) ... 3 field panel ... 10 hardware ... 1–9 LEDs ... 4 power wiring ... 3, 4 hardware inputs ... 3 analog ... 3 digital ... 3 hardware outputs ... 3 Siemens Building Technologies, Inc.

  • Page 35

    ... 18 power loss ... 14 power wiring ... 3, 4 product overview ordering ... 2 Siemens Building Technologies, Inc. related equipment ... 1 RJ-11 connector ... 9 RX LED ... 23 service information, basic ... 22 static discharge ... 22 troubleshooting basic service information...

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