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Taco UCP-1 Application Manual

Pump sequencing unit, self-contained interoperable controller
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Self-Contained Interoperable Controller Model UCP-1
SUPERSEDES: New
Plant ID: 001-4090
PSU1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Purpose of This Guide . . . . . . . . . . . . . . . . . . . . . . . . . 3
Representations and Warranties . . . . . . . . . . . . . . . . . 3
Applicable Documentation . . . . . . . . . . . . . . . . . . . . . . 4
Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . 4
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Static Electricity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
FCC Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Before Installing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
About this Document . . . . . . . . . . . . . . . . . . . . . . . . 5
Inspecting the Equipment . . . . . . . . . . . . . . . . . . . . 5
Equipment Location . . . . . . . . . . . . . . . . . . . . . . . . . 5
Selecting a Power Source . . . . . . . . . . . . . . . . . . . . 6
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Mounting the Device . . . . . . . . . . . . . . . . . . . . . . . . 6
Routing Cabling to the Device . . . . . . . . . . . . . . . . . 7
Grounding the Device . . . . . . . . . . . . . . . . . . . . . . . 8
Wiring Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Connecting Input Devices . . . . . . . . . . . . . . . . . . . 11
Connecting Output Devices . . . . . . . . . . . . . . . . . . 12
Other Connections . . . . . . . . . . . . . . . . . . . . . . . . . 12
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
© 2012 Taco Electronic Solutions, Inc.
Application Guide
PSU1 Pump Sequencing Unit

Table of Contents

Application Description. . . . . . . . . . . . . . . . . . . . . . . . 14
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . 15
Operational Modes . . . . . . . . . . . . . . . . . . . . . . . . 15
Auto Flow Recovery Mode. . . . . . . . . . . . . . . . . . . 16
Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Lead Pump Select . . . . . . . . . . . . . . . . . . . . . . . . . 19
Constant Circulation . . . . . . . . . . . . . . . . . . . . . . . 19
Low Supply Temperature Circulation. . . . . . . . . . . 19
Pump Exercising . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Controller Identification . . . . . . . . . . . . . . . . . . . . . . . 20
Network Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Diagnostic LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Troubleshooting Tips . . . . . . . . . . . . . . . . . . . . . . . 26
505-012
EFFECTIVE: August 10, 2012
1

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  • Page 1: Table Of Contents

    Application Guide 505-012 PSU1 Pump Sequencing Unit Self-Contained Interoperable Controller Model UCP-1 SUPERSEDES: New EFFECTIVE: August 10, 2012 Plant ID: 001-4090 Table of Contents PSU1 ........3 Application Description.
  • Page 2 PSU1 THIS PAGE LEFT BLANK INTENTIONALLY 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 3: Psu1

    REPRESENTATIONS AND WARRANTIES This Document is subject to change from time to time at the sole discretion of Taco Electronic Solutions, Inc. All updates to the Document are available at www.taco-hvac.com. When installing this product, it is the reader’s responsi- bility to ensure that the latest version of the Document is being used.

  • Page 4: Applicable Documentation

    • Touch a known, securely grounded object to discharge any charge you may have accumulated. • Use a wrist strap when handling printed circuit boards. The strap must be secured to earth ground. 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 5: Location

    • Cabling, cabling raceway, and fittings necessary to connect this equipment to the power source, FTT-10A network and peripheral devices. Equipment Location Abide by all warnings regarding equipment location provided earlier in this document. Optimally, the equipment should be installed within a secure enclosure. 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 6: Selecting A Power Source

    3.Using a small drill bit pre-drill the mounting holes. 4.Using two #6 pan head screws, mount the controller to the panel. 5.Wire the controller (See Routing Cabling to the Device). 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 7: Routing Cabling To The Device

    Routing Cabling to the Device Cabling used to connect the power source and cabling used to connect the FTT-10A network must remain separated within the control enclosure and wiring conduit. 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 8: Grounding The Device

    WARNING: Terminals 4, 6, 9, 12, 15, 18, and 38 are connected internally on all PSU1 controllers. Discon- nect ALL power sources when installing or servicing this equipment to prevent electrical shock or equip- ment damage. Figure 2: PSU1 Wiring Example - Power Sourcing 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.
  • Page 9 PSU1 Figure 3: PSU1 Wiring Example - Power Sinking 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.
  • Page 10 PSU1 Figure 4: PSU1 Wiring Example - Power Isolated 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 11: Connecting Input Devices

    While holding the board with the inputs facing down, the pair of dip switches furthest to the right correspond to the right-most input (SWT), the next pair of dip switches correspond to the next input (RWT) and so on. 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 12: Connecting Output Devices

    Terminal GND (T40) must be connected to earth ground. Failure to properly ground this equipment will result in improper operation. Improper grounding may also increase the risk of electrical shock, and may increase the possibility of interference with radio and TV reception. 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 13: Specifications

    Taco Catalog No. Level 4 22AWG (0.65mm) Unshielded, Plenum, U.L. Type CMP WIR-022 For detailed specifications, refer to the FTT-10A Free-Topology Transceiver User’s Guide published by Echelon Corpo- ration (www.echelon.com/support/documentation/manuals/transceivers). 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 14: Mechanical

    The PSU1 is intended for control of two primary pumps and can either extend the features of an iWorx® Series boiler controller, or can operate as a stand-alone controller. Figure 7: Typical Application 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 15: Sequence Of Operation

    Lead Pump Sel setting is set to “Alternating,” then the lag pump is started. If purely single pump operation is desired, then Operation Mode must be set to “Single” and the Lead Pump Sel setting must be set to either “Pump1” or “Pump2”. 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 16: Auto Flow Recovery Mode

    The Auto Flow Recovery sequence begins after Standby Mode has disabled the lag pump. When Auto Flow Recovery is active, the controller operates both pumps simultaneously. The controller is able to restart itself and resume normal operation once flow is detected. 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.
  • Page 17 • Enable Alarm must be set to "Switch (Open)" for monitoring of a normally open flow switch or "Switch (Closed)" for monitoring of a normally closed flow switch. • Auto Recovery: Enable must be set to "On." 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.
  • Page 18 Figure 8: Example Auto Flow Recovery Sequence NOTE: This flow chart depicts Auto Flow Recovery behavior in Standby Mode with an active demand input. Unrelated operational behavior has been intentionally omitted. 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 19: Modulation

    If Pump Settings: Pump Exercise is “On,” the pumps run sequentially for 15 seconds every week during periods of inac- tivity. There is a 1-second delay between pumps. Pump Modulation: Pump speed is fixed at the minimum speed when pumps are exercising. 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 20: Commissioning

    This section describes the commands available on the LCI for configuration of the PSU1, and the meanings and default values for controller parameters. For more information on using the LCI, see the iWorx® LCI Application Guide. 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 21: Network Inputs

    0% to 100% 32767 aOut[1] = AO 1 (pin 35) 32767=no override 32767 aOut[2] = AO 2 (pin 34) 32767 aOut[3] = AO 3 (pin 32) fpOut[4] SNVT_lev_percent Not used 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 22: Inputs

    Name Range Description Commissioning Auto, Pump commissioning switch state Enabled, Disabled Runtime 0 to 65535 hours Accumulated pump runtime Configuration This section describes the settings that can be modified. 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.
  • Page 23 Pump Exercise Off, On If “On,” pumps are run sequentially for 15 seconds every week. Operational Type Switching, Switching Turns on modulated outputs. Not available in Modulated 2 Stage mode. 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.
  • Page 24 This screen displays PSU1 settings related to Auto Flow Recovery and provides access to all of these settings from a single screen. Setting Range Default Description Enable Off, On Enable Auto Flow Recovery Number Restarts 0 to 4 Maximum number of system restart attempts 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 25: Alarms

    – Green when there is network activity – Off when there is no network activity Service – Illuminated when the service pin is depressed or when a controller gets configured by the LCI. 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 26: Troubleshooting Tips

    There are three conditions that require a reset: PSU1 require a reset for normal oper- – Pump 1 Failed alarm ation? – Pump 2 Failed alarm – Dual Pump Failure alarm 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.
  • Page 27 1.Make sure controllers, sensors, and power supplies are connected and communicating to desired devices. 2.Record precise hardware setup indicating the following: Version numbers of application software. Device and/or firmware version number. A complete description of difficulties encountered. Notes: 505-012, Effective: August 10, 2012 © 2012 Taco Electronic Solutions, Inc.
  • Page 28 Taco Electronic Solutions, Inc., 1160 Cranston Street, Cranston, RI 02920 Telephone: (401) 942-8000 FAX: (401) 942-2360. Taco (Canada), Ltd., 8450 Lawson Road, Unit #3, Milton, Ontario L9T 0J8. Telephone: 905/564-9422. FAX: 905/564-9436. Taco Electronic Solutions, Inc. is a subsidiary of Taco, Inc.

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Iworx psu1

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