ALERTON MS/TP Microset II Installation And Operation Manual

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Installation and Operations Guide

MS/TP Microset II

LTBT-MSTPMS2IOG Rev. 02

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Summary of Contents for ALERTON MS/TP Microset II

Page 2 Trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Alerton, BACtalk, and their logos are registered trademarks and VisualLogic is a trademark of Honeywell. Honeywell disclaims any proprietary interest in trademarks and trade names other than its own.
Page 3: Table Of Contents
Quick reference (continued) Introduction Specifications Mounting Wiring Wire specifications Power supply guidelines and requirements MS/TP Microset II power ratings Power supply grounding and wiring MS/TP LAN wiring Terminating MS/TP LAN cabling Grounding the MS/TP LAN shield Terminating resistors Operational overview Hotel vs.
Page 4: Quick Reference
Quick reference Display/control function Description Software remarks Setpoint (°F or °C as appropriate) Displays unit setpoint, after-hours/housekeeping Setpoint = AV-90. timer, ON/OFF status, or value of field service Override time remaining Housekeeping timer or after-hours timer = code, depending on mode of operation. AV-98.
Page 5: Quick Reference (Continued)
Installation and Operations Guide Quick reference Quick reference (continued) Mode IDs Field Service Codes M1—Office, no fan, occupied Code Data point Meaning M2—Office, no fan, unoccupied AV-95 Unoccupied cooling setpoint M3—Office, no fan, ON/OFF M4—Office, fan, occupied AV-96 Unoccupied heating setpoint M5—Office, fan, unoccupied AV-93 Cooling offset...
Page 6: Introduction
Installation and Operations Guide MS/TP Microset II Introduction ™ The MS/TP Microset II is a wall-mounted BACnet MS/TP smart sensor that resides on an MS/TP network. It is designed for applications with multiple zones, such as a restaurant or a shopping mall; or split zone control sites, like an office setting where occupants share a single zone split into multiple working areas.
Page 7: Specifications
Installation and Operations Guide Specifications Specifications Ta bl e 1 MS/TP Microset II specifications. Part Number MS-2100H-MSTP Power 24 VAC @ 5 VA MS/TP MS/TP LAN operates up to 115 Kbps Dimensions 4.6" (117 mm) H X 3.0" (76 mm) L X 0.7" (18 mm) D.
Page 8: Mounting
Mount in a clean, dry location away from windows, air ducts, and other places where environmental factors may affect temperature and humidity readings. If you mount the MS/TP Microset II on the interior of an outside wall, Note thoroughly insulate so air behind the sensor doesn’t affect the sensor reading.
Page 9 Mounting Figure 2 Backplate mounting dimensions. The MS/TP Microset II ships with the backplate on backwards. This makes the backplate easier to remove during installation. Two screws attach the backplate to an electrical box, mud ring, or other mounting surface.
Page 10 6. Hold the MS/TP Microset II at an angle above the backplate and then slide it down. 7. The two tabs on the inside top edge of the MS/TP Microset II should fit into the tab slots on the backplate (see Figure 3).
Page 11 2. Firmly depress the backplate leg until it is clear of the tab-stop on the MS/TP Microset II. 3. Gently pull the freed corner of the MS/TP Microset II away from the wall. 4. Repeat steps 1–4 on the other side.
Page 12: Wiring
90°. Power supply guidelines and requirements The MS/TP Microset II uses 24VAC power from a UL Listed Class 2 - 24VAC transformer (not provided). The MS/TP Microset II uses a half-wave rectifier to convert the AC power supply to onboard power. This enables multiple MS/TP Microset IIs to be powered from a single, grounded transformer.
Page 13: Power Supply Grounding And Wiring
This is known as line loss. The wire size is based on the length of the wire run and the current draw of the MS/TP Microset II. Use Figure 6 to determine wire size; obtain additional information from the transformer manufacturer.
Page 14: Ms/Tp Lan Wiring
Installation and Operations Guide MS/TP Microset II MS/TP LAN wiring The MS/TP Microset II communicates on the site-wide BACnet system over a twisted-pair MS/TP LAN, which uses the EIA–485 signaling standard. MS/TP Microset IIs are master devices on the MS/TP LAN.
Page 15: Terminating Ms/Tp Lan Cabling
Terminating MS/TP LAN cabling Maintain polarity of the MS/TP wire run throughout the MS/TP LAN. Do not run MS/TP Microset II wire in the same conduit or alongside Note power cables to avoid interference. If power cables must be crossed, cross at 90°.
Page 16: Terminating Resistors
• Each MS/TP segment must have a single point of shield ground, as close to the middle of the cabling run as possible (see Figure 9). • Do not ground the MS/TP shield directly to a MS/TP Microset II wire. • Never ground both ends of a shield because differences in potential between the grounds may induce current on the shield, causing interference.
Page 17: Operational Overview
Operational overview Operational overview The MS/TP Microset II operates in one of nine modes. In each mode, the MS/TP Microset II displays data and has operational features unique to that mode. Operating modes are listed in Table 4 on page 21 and Table 5 on page 22.
Page 18: After-Hours Override Operation
English and metric units You can set the MS/TP Microset II to display English or metric units based on the selection in the DDC header file or you can toggle that status in software.
Page 19: Outside Air Temperature (Oat) Display
Outside air temperature (OAT) display For OAT read at another unit to display at the MS/TP Microset II, the OAT value must be written in BCM DDC to the Present Value of AV-103 in the MS/TP Microset II. LCD backlight operation The MS/TP Microset II requires 24VAC (white and orange wires) to operate.
Page 20: Viewing Communications Status
Installation and Operations Guide MS/TP Microset II Viewing communications status • If the MS/TP Microset II sees no MS/TP packets, “no” displays. • The MS/TP MAC address is displayed in the outside area. • If it sees valid MS/TP requests, then “r” displays.
Page 21: Operating Mode Specifics
Installation and Operations Guide Operating mode specifics Operating mode specifics This topic provides LCD, button operation, for each of the operating modes. Use Table 4 to compare operating mode features. Use Table 5 on page 22 to determine values to set for enabling each operating mode.
Page 22: Enabling Operating Modes
Table 5 lists data point settings for the various operating modes and indicates the action of BV-67 in each mode. See Table 8 on page 43 for further detail. Ta bl e 5 Data point settings for MS/TP Microset II operating modes, with BV-67 status. Mode Description...
Page 23 Installation and Operations Guide Operating mode specifics This mode’s counterpart is M2, which is activated by setting BV-64 OFF. Indicates that setpoint is displayed. Occupant-selected space temperature setpoint INSIDE OUTSIDE Turn unit OFF Adjust setpoint M2—Office, No Fan, Unoccupied Set BVs 64, 65, 80, and 81 OFF. The LCD displays the word OFF. The unit controls to unoccupied setpoints.
Page 24 Installation and Operations Guide MS/TP Microset II This mode’s counterpart is M1, which is activated by setting BV-64 ON. OUTSIDE INSIDE Press and hold to initiate after-hours override and increment timer in 0.5 hour increments Press and hold to view unoccupied cooling setpoint...
Page 25 Installation and Operations Guide Operating mode specifics M3—Office, No Fan, Occupied, ON/OFF Set BV-64 and BV-65 ON and BV-80 and BV-81 OFF. The occupant can use the right buttons to set ON and OFF operation. DOWN Operation when ON The LCD displays the occupant-selected space temperature setpoint (AV-90). The unit controls to occupied setpoints.
Page 26 Installation and Operations Guide MS/TP Microset II M4—Office, Fan, Occupied Set BVs 64 and 80 ON and BV-81 OFF. Operation depends on whether the fan is running or stopped. This mode’s counterpart is M5, which is activated by setting BV-64 OFF.
Page 27 Installation and Operations Guide Operating mode specifics The occupant can press the right button to turn the unit ON. INSIDE OUTSIDE Fan status bars are hidden Turn fan ON M5–Office, Fan, Unoccupied Set BV-64 and BV-81 OFF and BV-80 ON. The LCD displays the word OFF. The unit controls to unoccupied setpoints.
Page 28 Installation and Operations Guide MS/TP Microset II buttons enable the occupant to adjust both the after-hours override DOWN time (after-hours adjustment mode) and the fan speed (fan speed mode). This function alternates after a three-second pause. Thus, after adjusting the after-hours override time, the occupant waits three-seconds to adjust fan speed.
Page 29 Installation and Operations Guide Operating mode specifics After-hours adjustment mode After-hours override time TIME REMAINING remaining in hh:mm Fan status reflects occupant-selected fan speed OUTSIDE INSIDE Increase timer to next half-hour increment Decrease timer to next half-hour increment Adjust setpoint Wait several seconds until TIME REMAINING disappears to enter fan speed mode Fan speed mode...
Page 30: Hotel Modes
Installation and Operations Guide MS/TP Microset II setpoint. The setpoint remains displayed until a right button is pressed or the after-hours timer expires INSIDE OUTSIDE Return to after-hours adjustment mode (either button) Adjust setpoint Hotel modes Hotel modes have a feature set typically used in the hospitality industry.
Page 31 Installation and Operations Guide Operating mode specifics The occupant can use the right button to turn the unit OFF. The occupant DOWN can also adjust the setpoint with the left buttons. DOWN Occupant-selected space temperature setpoint OUTSIDE INSIDE Turn unit OFF Adjust setpoint Operation when OFF The LCD displays the word OFF.
Page 32 Installation and Operations Guide MS/TP Microset II Vacant mode offers a temporary housekeeping override function. Housekeeping can press the right button to activate the override, which sets the timer to the override limit (AV-97). Activate housekeeping override Housekeeping override operation The LCD displays the override time remaining.
Page 33 Installation and Operations Guide Operating mode specifics Operation with fan ON The LCD displays the occupant-selected space temperature setpoint (AV-90) and the fan speed. The unit controls to occupied setpoints. The occupant can adjust the setpoint with the left buttons. The DOWN occupant can also use the right buttons to change the fan speed or turn...
Page 34 Installation and Operations Guide MS/TP Microset II M9—Hotel, Fan, Vacant Set BV-64 OFF and BV-80 and BV-81 ON. The display is blank. The unit controls to unoccupied heating and cooling setpoints. This mode’s counterpart is M8, which is activated by setting BV-64 ON.
Page 35: Field Service Mode
MS/TP Microset II. A technician presses a particular button sequence at the MS/TP Microset II to enter field service mode. In field service mode a technician uses the left buttons to scroll through data codes and the right buttons to change the value associated with a code.
Page 36 Installation and Operations Guide MS/TP Microset II The MS/TP Microset II displays the field service code and its associated value. Value associated with code Field service code Increase value Decrease value Scroll up and down through codes  To adjust values for codes in field service mode 1.
Page 37 Installation and Operations Guide Field service mode Ta bl e 6 Field service mode fixed codes. Code Data point Meaning AV-100 Occupied heating setpoint AV-97 Override limit AV-108 Microset room temperature offset AV-109 Space humidity offset AV-91 Setpoint high limit AV-92 Setpoint low limit AV-90...
Page 38: Setting The Ms/Tp Mac Address And Bacnet Device Instance
Set the MS/TP MAC address and BACnet device instance on the LCD using the MAC/Device Instance field service mode. NOTE: There are no DIP switches on the MS/TP Microset II. Ta bl e 7 MAC/Device Instance Mode (two-digit access code 9)
Page 39: Bacnet Object And Property Reference
Installation and Operations Guide BACnet object and property reference BACnet object and property reference This section shows the BACnet objects available in the MS/TP Microset II. The tables that follow list individual points and give details about the properties of each object listed.
Page 40: Ms/Tp Microset Ii Objects
MS/TP Microset II MS/TP Microset II objects Object Remarks (instance range) AI-(0) AI-0 is the MS/TP Microset II internal sensor analog input object. AV-(90–107) RESERVED AVs for Alerton legacy Microset behavior. AV-(0-47) General use AVs. BV-(0-47) General use BVs. BV-40 supports the priority-array property.
Page 41 Installation and Operations Guide BACnet object and property reference Property Access Notes Protocol Services Supported atomicReadFile, atomicWriteFile, readProperty, readPropertyMultiple, writeProperty, writePropertyMultiple, deviceCommunicationsControl, reinitializeDevice, i-Am, unconfirmedPrivateTransfer, timeSynchronization, who-Has, who-Is, utcTimeSynchronization Protocol Object Types analog-input, analog-output, analog-value, binary-input, Supported binary-output, binary-value, device, file, program, schedule Object List Too large to return in a single request, so returns “segmentation not supported”.
Page 42 Installation and Operations Guide MS/TP Microset II AV-object properties Property Access Notes Object Identifier Object Name “AV-nnn” by default. Object Type Present Value As described below Description Status Flags No flags set Event State Normal Out Of Service FALSE Units...
Page 43: Bv And Av Assignments
BV and AV assignments BV and AV assignments Each MS/TP Microset II has a number of pre-assigned data points—Binary and Analog Values (BVs and AVs). These data points are available from the MS/TP Microset II as BACnet objects; BACnet-compliant devices can access the properties of these objects.
Page 44 Installation and Operations Guide MS/TP Microset II Ta bl e 8 BV assignments for the MS/TP Microset II. (continued) Data Read Description ON action/status OFF action/status point only BV-76 Reserved for future fan auto icon. BV-77 Display/hide heating icon. Display heating icon.
Page 45 Microset space humidity offset. a. The temperature read by the MS/TP Microset II is available as AI-0. BV-75 controls transfer of AI-0 to AV-101. b. Typically, this is a demand offset value controlled by a BACtalk demand limiting program or by an global controller DDC demand limiting algo- rithm.

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