Related Manuals for McQuay MicroTech UV1S2 Series
Summary of Contents for McQuay MicroTech UV1S2 Series
- Page 1 Open Protocol Data Information Packet Version 2.2 Group: Controls Date: April 1996 ® MicroTech Unit Ventilator ™ Open Protocol Data Communications © 2002 McQuay International...
- Page 2 McQuay International, Minneapolis MN All rights reserved throughout the world. McQuay International reserves the right to change any information contained herein without prior notice. No guarantees are given as to the accuracy of information provided. MicroTech Unit Ventilator Open Protocol...
-
Page 3: Table Of Contents
Contents Revision History ........................... 4 Version 2.2 ............................4 Overview..........................5 Functional Goals of the Open Protocol for Unit Ventilators ..............5 Introduction to Open Protocol Network Configuration ................ 6 OPM - Open Protocol Master Panel ..................8 Variables ............................... 8 Configurations ........................9 Heating and Cooling Types........................ -
Page 4: Revision History
Revision History Version 2.2 This is a general upgrade and format change. Version 2.1 • For all memory locations, added Unit Ventilator Model information since not all memory locations are applicable to all models. • Added missing locations: Chilled Water Valve Position Face &... -
Page 5: Overview
Overview Functional Goals of the Open Protocol for Unit Ventilators ™ The McQuay International Open Protocol for unit ventilators allows other automation integrators the ability to communicate to a network of unit ventilators and obtain useful operating information via communication "reads" from the controller. In addition, remote control of the unit ventilator is possible by "writes"... -
Page 6: Introduction To Open Protocol Network Configuration
Ventilator Ventilator The OPM provides a single communications port entry into the McQuay Unit Ventilator network. The OPM panel consists of an EnergyLine model 120 controller. The automation integrator connects to Comm port A, which will be pre configured for RS-232, 9600 baud. Port A is the automation control integrator's Open Protocol communications port. - Page 7 Unit Ventilator Ventilator Once the McQuay communication network has been commissioned and is functional, the temperature control vendor can disconnect the monitor PC and connect a communicating device from the Building Automation System (BAS) Integrator's network. When the BAS Integrators communicating device is connected to the OPM panel the...
-
Page 8: Opm - Open Protocol Master Panel
OPM - Open Protocol Master Panel Variables This is the only memory location that will be able to be read in the Open Protocol Master Panel. It is used to see if the OPM is powered, communicating, and the applications code is intact. Open Protocol Master Status 0400 This is the status of the OPM. -
Page 9: Configurations
Configurations Heating and Cooling Types Unit Ventilators come in many configurations. They can be self contained or split. If they are split, the supply fan and coil section are floor mounted or ceiling mounted with the condenser section remotely mounted outside. The condenser section includes a compressor, condenser coil, fan and reversing valve. -
Page 10: Heating Only Unit Ventilators
Heating Only Unit Ventilators AV/AH Electric Heat only (UV3S2*) AV/AH HW/Steam, Valve Control (UV5S2*) AV/AH HW/Steam, Damper Control (UV5S2*) Cooling Only Unit Ventilators AZ, AV/AH DX w/o Electric Heat (UV3S2*) AV/AH CW only, Valve Control (UV7S2*) AV/AH CW only, Damper Control (UV7S2*) Summary for Unit Ventilator Model Descriptions Program... - Page 11 Program naming convention: UV1S2* • UV = Unit Ventilator • 1 = Program Type (1 - 7) • S = Standalone (Open Protocol) Software • 2 = Software Version • = Software Revision (A,B,C...) Reading ID's To find out what program resides in the controller, read addresses 800A through 800F in ASCII. These 6 memory locations contain the software program identification (IDENT).
-
Page 12: Inputs & Outputs
Inputs & Outputs Common Inputs and Outputs Inputs Outputs 0. Offset/Tenant Override 0. Status LED 1. Room Temperature 1. Supply Fan On/Off 2. Discharge Air Temperature 3. Outdoor Air Temperature 4. Mixed Air Temperature 12. Day-night changeover device Optional inputs and outputs: Offset/Tenant Override Mixed Air Temperature Day-night changeover... -
Page 13: Uv1
UV1*** Air Source Heat Pump Unit Ventilators Inputs Outputs 0. Offset/Tenant Override 0. Status LED 1. Room Temperature 1. Supply Fan On/Off 2. Discharge Air Temperature 2. Compressor On/Off 3. Outdoor Air Temperature 3. Reversing Valve On/Off 4. Mixed Air Temperature 4. -
Page 14: Uv3
UV3*** Unit Ventilators with DX cooling and electric heat Inputs Outputs 0. Offset/Tenant Override 0. Status LED 1. Room Temperature 1. Supply Fan On/Off 2. Discharge Air Temperature 2. Compressor 3. Outdoor Air Temperature 4. Mixed Air Temperature 4. Outdoor Air Damper Open 5. -
Page 15: Uv5
UV5*** Unit Ventilators with 2 pipe chilled water cooling & hot water/steam heat Inputs Outputs 0. Offset/Tenant Override 0. Status LED 1. Room Temperature 1. Supply Fan On/Off 2. Discharge Air Temperature 2. Cooling Valve Open 3. Outdoor Air Temperature 3. -
Page 16: Uv7
UV7*** Unit Ventilators with 4 pipe chilled water cooling and electric heat Inputs Outputs 0. Offset/Tenant Override 0. Status LED 1. Room Temperature 1. Supply Fan On/Off 2. Discharge Air Temperature 2. Cooling Valve Open / EOC Valve 3. Outdoor Air Temperature 3. -
Page 17: Description Of Operation
Description of Operation Control Temperature Following is a general description of operation. A more detailed description of operation is included in the Installation and Maintenance manual. Note that the control temperature for Unit ventilator is continually calculated by the MicroTech controller during occupied mode using the following equation: Temperature Control Temp = 19/20 * (Room Temp) + 1/20 * (Discharge Air Temp) -
Page 18: Occupied Cooling
Water or Steam Heat If there is hot water or steam heat, the heating valve or face & bypass dampers will be modulated to maintain the occupied heating setpoint (for 2 pipe units the entering water temperature must be above 80°F). -
Page 19: Damper Control
Damper Control If Outdoor Air Temperature 68 °F or over: Outdoor Air Dampers Closed Occupied Cooling Spt. Minimum Position Occupied Heating Spt. Outdoor Air Dampers Closed If Outdoor Air Temperature is under 68 °F: Occupied Cooling Spt. Outdoor Air Dampers Modulate Ventilation Spt Minimum Position Occupied Heating Spt. -
Page 20: Electric Heat Control
Electric Heat Control If Occupied: Occupied Cooling Spt. Stage Down Occupied Heating Spt. Stage Up If Unoccupied: Occupied Heating Spt. Stage Down Unoccupied Heating Spt Stage Up MicroTech Unit Ventilator Open Protocol... -
Page 21: Variables
Variables Unit Ventilator Read Only Memory Locations Description Address Range Conversion Models Chilled Water & Hot Water Valve 0406 0-255 X*.5 = % 11 Only Position - 2 Pipe Unit Chilled Water & Hot Water Valve 041A 0-255 X*.5 = % 11 Only Position Setpoint - 2 Pipe Unit Chilled Water Valve Position... - Page 22 Description Address Range Conversion Models Room Temperature 0401 0-255 X - 50 = °F Suction Line Temperature 0406 0-255 X - 50 = °F 2, 3 Supply Fan Hours 0444 Hi 0-131,070 (256*Hi+Lo) 0445 Lo *2=Hours Supply Fan Status 0211 0 = Off 1 = On Tenant setpoint Potentiometer...
- Page 23 Face & Bypass Damper Position or Valve Position Setpoint 041A This location contains the current Face & Bypass Damper or Valve Position Setpoint. To get the actual damper or valve position, take the values and multiply by 0.5. This will then give a value of 0-127.5 in .5% increments.
- Page 24 Mixed Air Temperature 0404 This location contains the current Mixed Air Temperature, if it exists. This is an optional sensor. If the sensor does not exist, this memory location should contain $FE (254 decimal). To get the actual temperature, take the value and subtract 50. No.
-
Page 25: Unit Ventilator Read And Write Memory Locations
Water In Temperature 0405 This location contains the current Water In Temperature. To get the actual temperature, take the value and subtract 50, result is in °F. Unit Ventilator Read and Write Memory Locations The following locations are used by all models of Unit Ventilators: Description Address Range... -
Page 26: Unit Ventilator Simulation Package
In order to develop and test an Open Protocol interface to the Unit Ventilators, the following is required: 1. McQuay International "Open Protocol Data Communications" document version 1.2 dated Feb. 24th, 1991 2. McQuay Open Protocol Hardware Simulator Package which includes:... - Page 27 2. Connect the MicroTech communications cables. Start with the OPM port B. Connect (daisy chain) the comm. cables to the (2) unit ventilators. For RS-485 pinout connections for each model controller, see the McQuay International "Open Protocol Data Communications" document version 1.2 dated Feb. 24th, 1991.
-
Page 28: Glossary Of Terms
Glossary of Terms Open Protocol Master The gateway by which BAS companies communicate with MicroTech controllers. Tenant Override An override mode that allows the unit to operate in the occupied mode for a set time period. Except for being temporary, Tenant Override operates identical to the occupied mode. MicroTech Unit Ventilator Open Protocol... -
Page 29: Index
Index —C— Chilled Water Valve Position, 5–6, 24–25 Clear Fault, 29 CommCoolSptRam, 29 CommHeatSptRam, 29 CommStatusRam, 29 Compressor Output Status, 24–26 —D— Discharge Air Temperature, 14–20 —F— Faults, 26 —H— Hot Water Valve Position, 24–25 —M— Mixed Air Temperature, 14–18 —O—... - Page 30 13600 Industrial Park Boulevard, P.O. Box 1551, Minneapolis, MN 55440 USA (763) 553-5330 (www.mcquay.com)