Honeywell ALERTON VLCA-1688 Installation And Operation Manual
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Honeywell ALERTON VLCA-1688 Installation And Operation Manual

Honeywell ALERTON VLCA-1688 Installation And Operation Manual

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Installation and Operation Guide
VLCA-1688
© Honeywell
LTBT-VLCA1688IOG Rev. 02

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Summary of Contents for Honeywell ALERTON VLCA-1688

  • Page 1 Installation and Operation Guide VLCA-1688 © Honeywell LTBT-VLCA1688IOG Rev. 02...
  • Page 2 Web Site: www.alerton.com E-mail: info@alerton.com All information in this document is provided as is without warranty of any kind. Honeywell reserves the right to change any information herein without prior notice. No guarantees are given as to the accuracy of information.

  • Page 3: Table Of Contents

    Communications: MS/TP LAN configuration Setting the MS/TP MAC address Terminating MS/TP LAN cabling MS/TP shield grounding Terminating resistors Communications status LED Rapid blinking Ethernet configuration Operation Identifying the software elements ROC file ROC loader version © Honeywell LTBT-TM-GEN4VLC Rev. Rev. 02...
  • Page 4 Scanning the BACnet network for devices Sending and saving data to BACtalk controllers Overriding schedule in a zone controller Peer-to-peer DDC functions Supply voltage for programming Microset II sensor field service mode Writing descriptors directly Shutdown sequence LTBT-TM-GEN4VLC Rev. 02 © Honeywell...

  • Page 5: Introduction

    Startup Guide or saving data from BACtalk controllers. (LTBT-TM-ADMIN) MS/TP Microset II Installation Describes specifications, mounting, wiring (including and Operations Guide MS/TP LAN wiring), operational overview, and other (LTBT-MSTPMS2IOG) information for the MS/TP Microset II sensor. © Honeywell LTBT-VLCA1688IOG Rev. 02...

  • Page 6: Vlc Application And Operation Overview

    Operational information and control data are available to other building controllers and systems through the BACnet protocol (ANSI/ASHRAE standard 135-2008). This enables VLCA-1688 devices and other VLC devices and BACnet-compliant devices to share data and execute commands that are initiated elsewhere in the network. LTBT-VLCA1688IOG Rev. 02 © Honeywell...

  • Page 7: Differences Between Vlca-1688 And Other Vlc Devices

    Ethernet port of the VLCA-1688 and correct the configuration. Use a hub or crossover cable and set the BACnet operator workstation to BACnet/Ethernet mode. Be sure to scan for configurable devices. • The VLCA-1688 has a 20 VDC source. © Honeywell LTBT-VLCA1688IOG Rev. 02...

  • Page 8: Components

    24VAC supply. Cover dimensions The VLCA-1688 consists of a circuit board with a plastic cover, which has screw holes for mounting. Use this information to plan screw mounting position and depth clearance. LTBT-VLCA1688IOG Rev. 02 © Honeywell...
  • Page 9 Installation and Operations Guide Components Do not use this information to plan overall space requirements. I MP O R TA N T Instead, refer to the VLCA-1688 technical data sheet for precise maximum dimensions. Figure 1 VLCA-1688 dimensions © Honeywell LTBT-VLCA1688IOG Rev. 02...

  • Page 10: Installation And Wiring

    I/O terminals carry an additional numeric identifier that corresponds to the software I/O. Use this section to identify terminals on the VLCA-1688. See later sections for more specific instructions, cautions, and recommendations. LTBT-VLCA1688IOG Rev. 02 © Honeywell...

  • Page 11: Power Supply Terminals

    COM terminals. Universal inputs terminals Use universal input terminals (in conjunction with adjacent COM terminals) to connect universal inputs. Input terminals accept a variety of signal types. © Honeywell LTBT-VLCA1688IOG Rev. 02...

  • Page 12: Binary Outputs (Bo) Terminals

    For more information and device-specific instruction, see “Analog outputs (AOs)” on page 27. MS/TP LAN communication terminals Use MS/TP LAN communications terminals to connect the BACnet MS/TP LAN to the VLCA-1688. Polarity must be maintained throughout the entire LAN. LTBT-VLCA1688IOG Rev. 02 © Honeywell...

  • Page 13: 24 Vdc Source

    I/Os. If desired, you can remove the terminal blocks from the circuit board, terminate wire, and re-seat them when you finish. Terminal blocks accept wire from 12 to 24AWG. © Honeywell LTBT-VLCA1688IOG Rev. 02...

  • Page 14: Power Supply Guidelines And Requirements

    Half-wave devices and full-wave devices must not use the same WARN ING AC transformer. If a VLCA-1688 is intended to share its power supply with another device, ensure that the other device uses a half-wave rectifier and that polarity of wiring is maintained. LTBT-VLCA1688IOG Rev. 02 © Honeywell...

  • Page 15: Power Ratings

    Use 18 AWG cable for best results. Ensure that all VLCA power, communications, and I/O cabling is WARN ING grounded according to these instructions and device-specific installation © Honeywell LTBT-VLCA1688IOG Rev. 02...
  • Page 16 VLC power terminals 24VAC UL listed 24VAC transformer VLC power terminals 24VAC Fused primary Panel/enclosure ground. Must connect to known earth ground. Figure 5 Grounding for multiple VLCs powered from the same transformer LTBT-VLCA1688IOG Rev. 02 © Honeywell...

  • Page 17: Selecting A Power-Supply Wire

    2. Find the intersection of the 50 VA line on the vertical axis (y) and 100 feet on the horizontal axis (x). 3. Read the diagonal line to the right of the intersection point, as shown. (Select the wire with higher capacity.) © Honeywell LTBT-VLCA1688IOG Rev. 02...

  • Page 18: Backup Battery

    5. Dispose of the old battery using an approved method. Inputs Universal inputs on VLCA-1688 devices can accept a variety of input types. Typically, a sensor, transducer, or other device produces an output signal that is wired to an input terminal on the VLCA-1688. LTBT-VLCA1688IOG Rev. 02 © Honeywell...

  • Page 19: Electrical Characteristics Of Vlca Input Circuits

    The input and analog output commons are Input and output commons internally connected to separate ground planes. Do not connect an input (AI or BI) to the AO COM. Do not connect an AO to the IN COM terminal. © Honeywell LTBT-VLCA1688IOG Rev. 02...
  • Page 20 • Black wire: Connects to the terminal labeled IN-0/MSET. • White wire: Terminates to COM. • Orange wire: Terminates to 24 VAC to power the backlight for the LCD.  The Microset sensor uses a 10 k thermistor for its space temperature sensor. LTBT-VLCA1688IOG Rev. 02 © Honeywell...
  • Page 21 2.8 k as the setpoint bias lever travels from the C to H position. For Microtouch connections, 18 AWG shielded twisted two-conductor cable is required. With Alerton-recommended wire, the maximum distance is 250 feet. © Honeywell LTBT-VLCA1688IOG Rev. 02...
  • Page 22 Thermistors: The Alerton sensors utilize a thermistor that has specific  characteristics. They are commonly referred to as Type 2 unicurve 10 k 77 Deg F., and more importantly, follow the R-T curve 16, as noted in the following Honeywell reference: http://content.honeywell.com/sensing/prodinfo/thermistors/resistanceTables/ resistanceTable14.asp thermistors. They are ...
  • Page 23 Wire the input leads across the desired IN terminal and the adjacent COM terminal (no polarity). 4 mA to 20 mA inputs VLCA-1688 devices use internal software-controlled resistors. Do not use external resistors with advanced controllers. Use two-conductor twisted pair shielded cable. © Honeywell LTBT-VLCA1688IOG Rev. 02...
  • Page 24 BI in software. Off-state leakage (if present) or other factors can result in inappropriate software counts. Refer to the information under “Dry contact inputs” on page 23 for these threshold values. LTBT-VLCA1688IOG Rev. 02 © Honeywell...

  • Page 25: Outputs

    Avoid high-frequency pulse inputs whenever possible. Outputs This section describes binary and analog outputs for VLCA-1688 devices. Binary outputs (BOs) All VLCA-1688 BO terminals are hot-switched, optically coupled triac outputs rated 24VAC @ 0.5 A. © Honeywell LTBT-VLCA1688IOG Rev. 02...
  • Page 26 BO x loads loads BO x BO x Return Ground (–) BO x BO x 24 VAC Transformer 24 VAC Ground screw (enclosure or other) to known earth ground Figure 13 Typical BO wiring scenarios LTBT-VLCA1688IOG Rev. 02 © Honeywell...

  • Page 27: Analog Outputs (Aos)

    Linear Converter. The same method can be used to obtain a 2 to 10 VDC signal. (For details about that function, see BACtalk Systems Programmer’s Guide and Reference (LTBT-TM-PRGRMR)). Wire the AO common to the nearest output COM terminal on the VLCA-1688. © Honeywell LTBT-VLCA1688IOG Rev. 02...
  • Page 28 100.00, up to 102.4, in which case they can overdrive a little to 10.24 V and 20.48 mA to help account for any possible line losses. VLCA-1688 units are calibrated so that 0 to 100 yields 0 to 10 V or 0 to 20 mA. LTBT-VLCA1688IOG Rev. 02 © Honeywell...

  • Page 29: Scaling Inputs In Software

    English or metric setup, respectively. Resistance Scaled or Use raw counts or select a Scaled AI Type and Counts enter range and zero values to convert the AI to a range prior to processing in DDC. © Honeywell LTBT-VLCA1688IOG Rev. 02...
  • Page 30 Use this setup when you want the present value to represent pulses per second. Set the input as Frequency. Units are usually set to Hertz (Hz). The measurable frequency range is 0.000009 to 100 Hz. LTBT-VLCA1688IOG Rev. 02 © Honeywell...

  • Page 31: Communications: Ms/Tp Lan Configuration

    Avoid address 0 because it is the Alerton factory default MAC address Note for all MS/TP devices.  To set the MS/TP MAC address 1. Find an unused MAC address on the MS/TP LAN to which the VLCA connects. © Honeywell LTBT-VLCA1688IOG Rev. 02...

  • Page 32: Terminating Ms/Tp Lan Cabling

    100 V gas discharge tubes or 120V MOVs between the shield and ground, as shown in Figure 16. • At connecting points of termination, tie the shield through with a wire nut as shown in Figure 17. LTBT-VLCA1688IOG Rev. 02 © Honeywell...

  • Page 33: Terminating Resistors

    200 mV. Resistors affect the wave form as follows: • When the resistance value decreases, the amplitude of the wave form decreases and becomes more square. • When the resistance value increases, the amplitude of the wave form increases and becomes less square. © Honeywell LTBT-VLCA1688IOG Rev. 02...

  • Page 34: Communications Status Led

    In addition to MS/TP communications, the VLCA-1688 can be configured to communicate over an Ethernet network using BACnet/Ethernet or BACnet/IP. The VLCA is shipped in MS/TP mode. Use the Edit Device Configuration dialog box in Device Manager to select an Ethernet mode. LTBT-VLCA1688IOG Rev. 02 © Honeywell...

  • Page 35: Operation

    ROC loader version The ROC loader is the firmware in the VLCA-1688 that provides only enough functionality to download a ROC file. It is viewable in the firmware-revision property of the VLCA-1688 device object. © Honeywell LTBT-VLCA1688IOG Rev. 02...

  • Page 36: Ddc File Name

    For more information about scanning for devices and sending to or saving data from BACtalk controllers, see Envision for BACtalk Installation and Startup Guide (LTBT-TM-ADMIN). Additional information about VLCA-1688 behavior under various ROCs is included in BACtalk Systems Programmer’s Guide and Reference (LTBT-TM- PRGRMR). LTBT-VLCA1688IOG Rev. 02 © Honeywell...

  • Page 37: Reverting To An Older Roc

    HOA switch operation Switch position BO operation AO operation Off (0%). One-second delay between switch set and output response to accommodate transitions from H to A through this position. A (default) Software controlled Software controlled © Honeywell LTBT-VLCA1688IOG Rev. 02...

  • Page 38: Data Retention

    If this happens, delete the data. CAUTION This procedure deletes data from flash memory and from the battery-backed RAM. You will need to reconfigure the controller afterward. LTBT-VLCA1688IOG Rev. 02 © Honeywell...

  • Page 39: Scanning The Bacnet Network For Devices

    This section describes how to send data to a BACtalk controller.  To send or save data to BACtalk controllers 1. From the BACtalk menu, select Device Manager. 2. In the list of devices, select the device profiles that you want to send or save. © Honeywell LTBT-VLCA1688IOG Rev. 02...

  • Page 40: Overriding Schedule In A Zone Controller

    (BV-65 ON), the schedule puts the zone into Unoccupied mode whenever the schedule transitions OFF but does not put the zone into Occupied mode when the schedule transitions back ON. Note The BACtalk Programmer's Guide and Reference (LTBT-TM-PRGRMR) documents the complete list of BVs. LTBT-VLCA1688IOG Rev. 02 © Honeywell...

  • Page 41: Peer-To-Peer Ddc Functions

    For more information about VLC peer-to-peer DDC functions, see the sections on functions 60, 61, 62 and 63 in BACtalk Systems Programmer's Guide and Reference (LTBT-TM-PRGRMR). © Honeywell LTBT-VLCA1688IOG Rev. 02...

  • Page 42: Supply Voltage For Programming

    VLC object names and descriptions” in BACtalk Systems Programmer’s Guide and Reference (LTBT-TM-TRGRMR), available on the ASN. Shutdown sequence The VLC monitors supply voltage and goes into shutdown mode if the supply voltage drops below 15 VAC, thereby protecting data integrity. LTBT-VLCA1688IOG Rev. 02 © Honeywell...
  • Page 43 • The after-hours timer is set to zero. • The demand offset is set to zero. The VLCA-1688 is rated for operation with a supply voltage between 20 Note VAC and 30 VAC, with nominal voltage of 24 VAC. © Honeywell LTBT-VLCA1688IOG Rev. 02...

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