SCHNEIDER ELECTRIC MN-S1 Thermostat Instruction Guide

SCHNEIDER ELECTRIC MN-S1 Thermostat

 

Application

I/A Series MicroNet Sensors are wall-mounted digital temperature and humidity sensors for use with I/A Series MicroNet Controllers. These sensors feature a Sensor Link (S-Link) communication protocol that provides a simple two-wire interface for power and exchange of sensor and subbase information. Available in twelve models, these I/A Series MicroNet Sensors provide integral analog to digital conversion for the elimination of electrical interference between sensor and controller. An optional wiring connection allows access to the MicroNet LONWORKS® network (LON®) via a LONWORKS network jack on the left side of each sensor. This jack allows direct connection to a PC running WorkPlace Tech Tool (WP Tech) or a third-party Network Management Tool. Each sensor also provides an S-Link jack on the right side for connecting to a PDA running Pocket I/A software. I/A Series MicroNet Sensors are suitable for direct-wall, 2 x 4 electrical boxes, 1/4 DIN electrical boxes, or surface box mounting.

Model Chart
See Table 1 on page 2 for a chart of the models.

Table-1 MN-Sxxx Model Chart

Model		Description	Keypad	Display
Temperature Sensor	Temperature and Humidity Sensor
MN-S1	MN-S1HT	Sensor only	None	None
MN-S2	MN-S2HT	Sensor with override	One-button	LED Override Status Indication
MN-S3b	MN-S3HTb	Sensor with setpoint adjustment and override	Three-button	Digital LCDa and LED Override Status Indication
MN-S4b	MN-S4HTb	Sensor with setpoint, override, and controller mode functions	Six-button	Digital LCDc and LED Override Status Indication
MN-S4-FCSb	MN-S4HT-FCSb	Sensor with setpoint, On/Off and Fan speed functions	Six-button	Digital LCDc and LED Fan Status Indication
MN-S5b	MN-S5HTb	Sensor with setpoint, override, controller mode functions, and emergency heat key	Seven-button	Digital LCDc, LED Override Status, and Emergency Heat Indication

• CD displays value and setpoint.
• Allows viewing of alarms and diagnostics.
• LCD displays values, setpoints, and controller mode functions

Applicable Documentation

F-Number	Description	Audience	Purpose
F-26266	I/A Series MicroNet 100, 150, and 200 Series Controllers Installation Instructions	–   Application Engineers –   Installers –   Service Personnel –   Start-up Technicians	Provides step-by-step mounting and installation instructions for the I/A Series MicroNet 100, 150, and 200 Series Controllers. Also includes checkout and LED indication sections.
F-26617	I/A Series MicroNet 50 Series Controllers Installation Instructions	–   Application Engineers –   Installers –   Service Personnel –   Start-up Technicians	Provides step-by-step mounting and installation instructions for the I/A Series MicroNet 50 Series Controller. Also includes checkout and LED indication sections.
F-26282	I/A Series MicroNet VAV Series (MNL-V1RVx and MNL-V2RVx) Controllers Installation Instructions	–   Application Engineers –   Installers –   Service Personnel –   Start-up Technicians	Provides step-by-step mounting and installation instructions for the I/A Series MicroNet MNL-V1RVx and MNL-V2RVx VAV Controllers. Also includes checkout and LED indication sections.
F-26284	I/A Series MicroNet VAV Series (MNL-V3RVx) Controller Installation Instructions	–   Application Engineers –   Installers –   Service Personnel –   Start-up Technicians	Provides step-by-step mounting and installation instructions for the I/A Series MicroNet MNL-V3RVx VAV Controller. Also includes checkout and LED indication sections.
F-26887	I/A Series MicroNet Fan Coil Controllers with High Voltage Relay(s) Installation Instructions	–   Application Engineers –   Installers –   Service Personnel –   Start-up Technicians	Provides step-by-step mounting and installation instructions for the I/A Series MicroNet MNL-11RF2 and MNL-13RF2 Controllers. Includes instructions for network wiring, installation on a LONWORKS network, checkout, and LED indication.
F-26580	I/A Series WorkPlace Tech Tool Engineering Guide (for version 3.1)	–   Application Engineers –   Installers –   Service Personnel –   Start-up Technicians	Provides engineering and technical information for applying and using all aspects of WorkPlace Tech Tool, version 3.1 software.
F-26988	I/A Series WorkPlace Tech Tool 3.2 Engineering Guide	–   Application Engineers –   Installers –   Service Personnel –   Start-up Technicians	Provides engineering and technical information for applying and using all aspects of WorkPlace Tech Tool, version 3.2 software.
F-27254	I/A Series WorkPlace Tech Tool 4.0 Engineering Guide	–   Application Engineers –   Installers –   Service Personnel –   Start-up Technicians	Provides engineering and technical information for applying and using all aspects of WorkPlace Tech Tool, version 4.0 software.
F-26507	I/A Series MicroNet System Engineering Guide	–   Application Engineers –   Installers –   Service Personnel –   Start-up Technicians	Provides engineering and technical information to assist in designing a complete MicroNet controller system using different architectures, components, and software.
F-26304	I/A Series WorkPlace Tech Tool User’s Guide (for version 3.1)	–   Application Engineers –   Installers –   Service Personnel –   Start-up Technicians	Provides step-by-step instructions for using WorkPlace Tech Tool, version 3.1 software.
F-26987	I/A Series WorkPlace Tech 3.2 Tool User’s Guide	–   Application Engineers –   Installers –   Service Personnel –   Start-up Technicians	Provides step-by-step instructions for using WorkPlace Tech Tool, version 3.2 software.
F-27255	I/A Series WorkPlace Tech 4.0 Tool User’s Guide	–   Application Engineers –   Installers –   Service Personnel –   Start-up Technicians	Provides step-by-step instructions for using WorkPlace Tech Tool, version 4.0 software.

Installation

 The I/A Series MicroNet Sensor is packaged and disassembled in one box and consists of three major parts:

• A pre-wirable base plate for wiring to the controller S-Link and MicroNet LONWORKS network (LON) connections
• An electronic assembly containing the sensors and associated circuitry
• A removable cover

Inspection                           

Inspect the carton for damage. If damaged, notify the carrier immediately. Inspect sensors for damage upon receipt.

Requirements
(These items are not provided)

• The installer must be a qualified technician
• Job wiring diagrams
• Tools:
  • Drill and bits for mounting screws
  • Level
  • Static protection wrist strap
• Two mounting screws (dry-wall anchors for the direct-wall mount)
• Accessories (if required)
  • AT-1104 Cast aluminum guard with steel base plate
  • AT-1155 Clear plastic guard with solid and ring base, tumbler-type key lock
  • AT-1163 Wire guard with steel base plate
  • MNA-STAT-1 Replacement covers (qty. 12)

Precautions

General

Caution: Disconnect power before installing or removing the cover. Failure to observe this warning can damage the sensor.

• Follow Static Precautions when installing this
• Use copper conductors that are suitable for 167 °F (75 °C).
• Make all connections according to the electrical wiring diagram, and national and local electrical codes.

Static Precautions

Static charges damage electronic components. The microprocessor and associated circuitry are extremely sensitive to static discharge. Use the following precautions when installing, servicing, or operating the system.

• Work in a static-free
• Discharge static electricity by touching a known, securely grounded

Use a wrist strap connected to earth ground when handling the controller’s printed circuit board

Federal Communications Commission (FCC)

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in residential installations. This equipment generates, uses, and can radiate radio frequency energy and may cause harmful interference if not installed and used in accordance with the instructions. Even when instructions are followed, there is no guarantee that interference will not occur in a particular installation. If this equipment causes harmful interference to radio or television reception— which can be determined by turning the equipment off and on—the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving
• Increase the separation between the equipment and
• Connect the equipment to an outlet on a circuit different from that to which the receiver is
• Consult the dealer or an experienced radio/television technician for

Canadian Department of Communications (DOC)

This class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

Location

I/A Series MicroNet Sensors are suitable for indoor use only

Caution

• Avoid locations where excessive moisture, corrosive fumes, vibration, or explosive vapors are
• The humidity sensing element of MN-SxHT and MN-S4HT-FCS models will recover from short-term exposure to liquid water or condensation. Repeated exposure will degrade the performance of the
• Avoid electrical noise Do not install near large contours, electrical machinery, or welding equipment.
• Locate where ambient temperatures do not exceed 122 °F (50 °C) or fall below 32 °F (0°C) and relative humidity does not exceed 95% or fall below 5%, non-condensing.

Failure to observe these precautions can damage the sensors. Locate the I/A Series MicroNet Sensor on an inside wall where the sensor is exposed to at least 30 feet (9 meters) per minute of unrestricted air circulation. The location should represent the average temperature in the room or space. Make certain the sensor is located out of direct sunlight, away from sources of heat or cold, and away from concealed ducts or pipes.

Mounting

I/A Series MicroNet Sensors can be direct-wall, 2 x 4 electrical box, 1/4 DIN electrical box, or surface box mounted. See Figure 1 and Figure 2 for the appropriate mounting dimension

Figure-1 Mounting Dimensions for Direct-wall, 2 x 4 Electrical Box, and Surface Box Mounting.

Direct-wall Mount

1. Use the mounting dimensions shown in Figure 1.
2. Feed S-Link wires through the base
3. If required, feed LON wires through the base
4. Using two appropriate screws (use drywall anchors as necessary), mount the base plate to wall (Figure 3).

2 x 4 Electrical Box Mount

1. Use the mounting dimensions shown in Figure 1.
2. Feed S-Link wires from the electrical box through the base
3. If required, feed LON wires through base
4. Using two 6-32 x 5/8 flat head screws (not provided), mount the base plate to the electrical box (Figure 4).

1/4 DIN Electrical Box Mount

1. Use the mounting dimensions shown in Figure 2.
2. Feed S-Link wires from the electrical box through the base If required, feed LON wires through the base plate.

Caution: Failure to use vertical mounting holes as shown in Figure 5 may cause a shortage of the LONWORKS network. Using two appropriate screws (not provided), mount the base plate to the electrical box using vertical mounting holes indicated in Figure 5.

Surface Box Mount

1. Use the mounting dimensions shown in Figure 1.
2. Feed S-Link wires from the electrical box through the base
3. If required, feed LON wires through the base
4. Using two 6-32 x 5/8 flat head screws (not provided), mount the base plate to the surface box (Figure 6)

Wiring

The following electrical connections can be made to the I/A Series MicroNet Sensors:

• Sensor Link (S-Link) Wiring
• MicroNet LONWORKS network (LON) Wiring

Caution: Do not connect any power wiring to the I/A Series MicroNet Sensor. Failure to observe this precaution will damage the sensor.

Communications Wiring

Communications wiring includes a connection between the controller and an I/A Series MicroNet Sensor via the S-Link and an optional connection between the sensor and the MicroNet LONWORKS network (LON). Figure 7 shows S-Link and LON wiring terminations.

Sensor Link (S-Link) Wiring

• ink wiring powers and enables the MN-Sxxx The S-Link needs at least 24 gage (0.205 mm2), twisted pair, voice grade telephone wire. The capacitance between conductors

cannot be more than 32 pF per foot (0.3 m). If a shielded cable is used, the capacitance between any one conductor and the others, connected to the shield, cannot be more than 60 pF per foot (0.3m). Maximum wire length is 200 ft. (61 m).

Note:

• S-Link wiring is polarity
• Shielded cable is not required for S-Link
• If a conduit is used between an I/A Series Sensor and a controller, the MicroNet LONWORKS network and S-Link wiring can be in the same conduit.
• S-Link wiring can be in the same conduit with UI, AO, and DI
• S-Link wiring must be dedicated to S-Link It cannot be part of an active, bundled telephone trunk.
• If the cable is installed in areas of high RIF/EMI, the cable must be in

Connect the S-Link to I/A Series MicroNet Sensor

1. Strip 1/4 in. (6mm) of insulation from S-Link
2. Connect wires to screw terminals 1 and 2 (Figure 7). The S-Link terminals are polarity insensitive.

Push excess wire back through the base plate to minimize airflow restriction.

MicroNet LONWORKS Network (LON) Wiring

An approved Category 4 or 5, twisted-pair cable may be used for the optional LONWORKS network connection between the controller and MN-Sx sensor. LONWORKS network wiring is polarity insensitive.

Note:

• LONWORKS network wiring is polarity
• Shielded cable is not required for the LONWORKS network
• If conduit is used between an I/A Series Sensor and a controller, the MicroNet LONWORKS network and S-Link wiring can be in the same
• Do not mix LONWORKS network wiring with UI, DI, AO, DO, or power types of
• LONWORKS network wiring must be dedicated to MicroNet LONWORKS network communications. It cannot be part of an active, bundled telephone
• If the cable is installed in areas of high RFI/EMI, the cable must be in
• If the shielded wire is used for the LONWORKS network, the shield must be connected to earth ground at only one end by a 470 K ohm 1/4 watt resistor. The shield must be continuous from one end of the trunk to the
• To preserve the integrity of the network, the LONWORKS network wiring connecting a I/A Series MicroNet controller to an MN-Sxxx Sensor must be run to the sensor and back, in a daisy-chain fashion. A wire “spur” must not be used to connect the sensor to the controller.
• While the MN-Sxxx Sensor is not counted as a “node” in the MicroNet LONWORKS network, all LONWORKS network wiring to the sensor must be counted when determining the length of the LONWORKS network wiring

I/A Series MicroNet Controllers use LONWORKS Free Topology Transceivers and support polarity insensitive bus (daisy chain) and free (all combinations of star, tee, and loop) wiring topologies. See I/A Series MicroNet System Engineering Guide, F-26507 to design a MicroNet LONWORKS TP/FT-10 network, including recommended topologies and approved cable types. Connecting the LONWORKS network to an I/A Series MicroNet Sensor provides local access to the network via the sensor’s LONWORKS network jack. Four wires (a daisy chain connection) must be used to connect an I/A Series MicroNet Sensor to a LONWORKS network. This connection is optional.

Connect LONWORKS Network to I/A Series MicroNet Sensor

1. Strip 1/4 in. (6 mm) of insulation from LON
2. Connect wires to screw terminals 3 and 4 (Figure 7). The LON terminals are polarity insensitive.

Push excess wire back through the baseplate to minimize air flow restriction.

Wiring Checkout
Verify wiring between I/A Series MicroNet Sensor base plate and the I/A Series MicroNet Controller is installed according to job wiring diagram, national and local wiring codes.

Electronic Assembly and Cover Installation

Caution:

• Observe static precautions when handling electronic
• Handle electronic assemblies with care to prevent damage to the temperature and humidly sensing
• Do not touch the humidity sensing element on the MN-SxHT and MN-S4HT-FCS The element is located beneath a small plastic housing on the back of the electronic assembly.

Failure to observe these precautions can damage the sensor.

1. Set electronic assembly onto bottom hooks of base
2. Secure the electronic assembly to base plate by tightening two screws at top of the assembly (Figure 8).

Features

I/A Series MicroNet Sensor Model	Description	Features
		Zone Temp Sensing	Zone Humidity Sensing	Override Key and LED	Setpoint Adjustment	Fan Operation and Speed	Mode (Heat/Cool Auto/Off)	Emergency Heat Key and LED	LONWORKS Network Jack	Display Screen
MN-S1	MN-S1 has no display or keypad. Its primary function is to provide zone temperature to the controller via the S-Link. Provides a LONWORKS Network Jack for commissioning, testing, and monitoring.	X							X
MN-S1HT	MN-S1HT adds humidity sensing functionality to the MN-S1.	X	X						X
MN-S2	The MN-S2 provides zone temperature to the controller via the S-Link and features an Override Key, with LED indicator, which forces the controller into timed occupied mode. Provides a LONWORKS  Network Jack for commissioning, testing, and monitoring.	X		X					X
MN-S2HT	MN-S2HT adds humidity sensing functionality to the MN-S2.	X	X	X					X
MN-S3	The MN-S3 provides the same functionality and features as the MN-S2. In addition, the MN-S3 has a digital liquid crystal display and allows controller setpoint adjustment. The MN-S3 offers one setpoint and one default display screen.	X		X	X				X	X
MN-S3HT	MN-S3HT adds humidity sensing functionality to the MN-S3.	X	X	X	X				X	X
MN-S4	The MN-S4 provides the same functionality and features as the MN-S3. In addition, the MN-S4 includes a Fan Key, a Mode Key, and a Setpoint Key. The keypad allows you to select controller modes, fan modes, and fan speeds. The MN-S4 offers four setpoints and four display screens.	X		X	X	X	X		X	X
MN-S4HT	MN-S4HT adds humidity sensing functionality to the MN-S4.	X	X	X	X	X	X		X	X
MN-S4-FCS	The MN-S4-FCS has a digital liquid crystal display and allows adjustment of one controller setpoint and display of one controller value. In addition, the keypad includes a Fan Key for On/Off/Auto settings and three Fan Speed keys for Low, Medium, High adjustment.	X			X	X			X	X
MN-S4HT-FCS	MN-S4HT-FCS adds humidity sensing functionality to the MN-S4-FCS.	X	X		X	X			X	X
MN-S5	The MN-S5 provides the same functionality and features as the MN-S4. In addition, the MN-S5 features an Emergency Heat Key and LED for heat pump applications. The MN-S5 offers four setpoints and four display screens.	X		X	X	X	X	X	X	X
MN-S5HT	MN-S5HT adds humidity sensing functionality to the MN-S5.	X	X	X	X	X	X	X	X	X

MicroNet LONWORKS Network (LON) Jack
A LONWORKS Network Jack is located on the left side of each sensor model. The mating plug for this Jack is a 1.3 mm DC power plug. Figure-9 shows its location.

Sensor Operation Diagnostics

Note: The following applies to an MN-S3, MN-S3HT, MN-S4, MN-S4HT, MN-S4-FCS, MN- S4HT-FCS, MN-S5, or MN-S5HT sensor connected to a I/A Series MicroNet controller. In the Diagnostics Mode, the sensor times out and returns to the default screen if left idle for forty seconds. Subnet Address, Node Address, Alarms, and Errors are view only frames. Values displayed in the Temperature Offset and Relative Humidity Offset frames are adjustable. The I/A Series MicroNet MN-S3, MN-S3HT, MN-S4, MN-S4HT, MN-S4-FCS, MN-S4HT-FCS, MN-S5, or MN-S5HT Sensors provide the following types of diagnostic data.

• Subnet Address Node Address
• Errors Alarms
• Temperature Offset Relative Humidity Offset

To access view only diagnostics

View the Subnet Address, Node Address, Errors, and Alarms in this mode.

1. Press and hold both ends of Up/Down Key for four The Subnet Address frame appears.
2. Press Up/Down Key to scroll through Node Address frame, Errors frame, and Alarms frame.

To access adjustable diagnostic data

Access Temperature Offset frame and Relative Humidity Offset frame in this mode. Skip step 1 if you are already in the Diagnostics Mode.

1. Press and hold Up/Down Key for four The Subnet Address frame appears.
2. Press Override (Press On/Off/Auto key on MN-S4-FCS or MN-S4HT-FCS.) The Temperature Offset frame appears.
3. Use Up/Down Key to adjust
4. To access Relative Humidity Offset frame, press Override Key (On/Off/Auto key on MN-S4-FCS or MN-S4HT-FCS) again and use Up/Down Key to adjust
5. To return to the Subnet Address frame, Node Address frame, Errors frame, and Alarms frame, press Override Key (On/Off/Auto key on MN-S4-FCS or MN-S4HT-FCS).

Subnet Address and Node Address: Subnet Address frames and Node Address frames display subnet and node addresses of the connected I/A Series MicroNet Controller. The LCD alternates between Subnet Address frame, the numerical value of subnet address, Node Address frame, and the numerical value of node address. The values displayed reflect the subnet/node address assigned to domain table index 0.

Errors: The Error frames display a value of 1, 2, 4, 8, 16, 32, or a combination of any of these values. The value may indicate one or more errors as described in Table 2. For example, an Error frame display value of 17 indicates two errors (1 = EEPROM write or read error and 16 = Analog output writing error) since 1 + 16 = 17. The LCD alternates between the Error frame and the numerical error value. An error screen displaying dashes (—) indicates no errors.

Table-2 Error Code Descriptions

Error Code	Controller
	MNL-xxRxx	MNL-VxRVx	MNL-800
1	EEPROM write or read error
2	Out-of-range universal input (UI1)		Out-of-range universal input (any)
4	Out of range universal input (UI2)	High-velocity pressure	N/A
8	Out of range universal input (UI3)	Low velocity pressure	N/A
16	Analog output writing error		N/A
32	Calibration data checksum error or unit is uncalibrated
64	N/A		Invalid RTC

Alarms: The Alarm frames display the last four alarms of the connected I/A Series MicroNet Controller. The LCD alternates between Alarm frame and numerical alarm value. If the controller is sending more than one alarm, the numerical alarm value will update every four to five seconds. Alarms are defined by the controller application. For information regarding specific alarm definitions, consult the controller application documentation.

Temperature Offset. The Temperature Offset frame displays the connected I/A Series MicroNet Controller’s temperature offset value. Adjust the value using the Up/Down Key.

Humidity Offset. The Humidity Offset frame displays the connected I/A Series MicroNet Controller’s humidity offset value. Adjust the value using the Up/Down Key.

Display Screen Functions

The MN-S3, MN-S3HT, MN-S4-FCS, and MN-S4HT-FCS models have one display screen slot. The MN-S4, MN-S4HT, MN-S5, and MN-S5HT models have four display screen slots. The connected controller’s application defines what is visible in each slot. The first display screen slot always shows the sensor’s default display.

To scroll through display screens (MN-S4, MN-S4HT, MN-S5, and MN-S5HT)

1. Press either end of the Up/Down Key to change from the first display screen slot to the second display screen slot. Before the second display screen slot appears, “-2-” will appear to indicate you are about to view the second
2. Press either end of the Up/Down Key to scroll through the four display screen slots. Before the third display screen slot appears, “-3-” will appear to indicate you are about to view the third Before the fourth display screen slot appears, “-4-” will appear to indicate you are about to view the fourth slot.

Emergency Heat Functions
The Emergency Heat Key activates emergency heat in heat pump applications equipped with this feature. To activate, press the Emergency Heat Key. The LED indicator is lit when Emergency Heat is activated. (Applies only to MN-S5 and MN-S5HT.)

Fan Functions

To display and adjust the fan (MN-S4, MN-S4HT, MN-S5, and MN-S5HT)

1. Press the Fan Key to change from the current display to the first fan display screen The sensor displays the first fan, the corresponding speed icon (Table 3). and “-1-”.

Note:

• There are two fan display screen The fan assigned to each slot depends on the controller application and sensor configuration

If the sensor displays three dashes when pressing the Fan Key, all fan slots are unassigned or not Continue to press Fan Key to scroll through the fan Before the second fan appears, “-2-” will appear to indicate you are about to view the second fan. Press Up/Down Key as necessary to change fan To enter new selection, press any key besides the Up/Down Key or wait for 5

To activate fan speed (MN-S4, MN-S4HT, MN-S5, and MN-S5HT)
If the controller is equipped for multiple fan speeds, the Up/Down Key activates one of three selected fan speeds. Multiple-speed fans are indicated by wavy lines next to fan icon in LCD (To see fan speed icons, refer to Table 3).

To display and adjust the fan (MN-S4-FCS and MN-S4HT-FCS)

1. Press the On/Off/Auto Key to select On, Off, or Automatic fan (Auto is optional and must be activated using WP Tech.)
2. Press the low, medium, or high key to adjust fan speed. (Speed indicated by 1, 2, or 3 wavy lines on )

General Functions

Sensor time-out
The I/A Series MicroNet Sensor times out and returns to the default display if left idle for 30 seconds. If the sensor is in diagnostics mode, then the time out is 40 seconds.

To enter a selection or setpoint
Press any key besides the Up/Down Key or wait five seconds for the change to be accepted automatically.

To fast scroll toggle for increasing or decreasing values
Press and hold either end of the Up/Down Key and tap and release Override Key. To terminate fast scroll, release Up/Down Key.

Mode Functions
To display and adjust modes (MN-S4, MN-S4HT, MN-S5, and MN-S5HT):

1. Press Mode Key to change from the current display to first mode The sensor displays the first mode, the corresponding icon (Table-3). and “-1-”.

Note:

• There are two modes The mode assigned to each slot depends on the controller application and sensor configuration.
• If the sensor displays three dashes when you press the Mode Key, all mode slots are unassigned or no
• Continue to press Mode Key to scroll through mode Before the second mode appears, “-2-” will appear to indicate you are about to view the second mode
• Press the Up/Down Key as necessary to change
• To enter a new mode selection, press any key besides the Up/Down Key or wait for five seconds.

Override Functions

The Override Key allows the override of the unoccupied mode setting within the controller in applications equipped with this feature.

• The override LED indicator is lit if the MicroNet controller is overridden to the occupied mode from the unoccupied
• The override LED indicator flashes when the timed override has less than 5 minutes remaining.
• If the override time is left to expire, the controller returns to the unoccupied

To override the unoccupied mode
Press (for not more than four seconds) and release Override Key. The controller goes into the occupied mode for the override time specified by the controller.

To Re-initialize override time
If the override time has not expired, press (for not more than four seconds) and release the Override key. Override time resets to override the time specified by the controller.

To cancel override
Press and hold Override Key for four seconds. The override is canceled and the controller returns to unoccupied mode.

Service Pin
To command the controller to send the controller service pin to the LONWORKS Network Press and hold the Override key (On/Off/Auto Key on MN-S4-FCS or MN-S4HT-FCS) for eight seconds. The service pin of the connected controller is sent out on the LONWORKS Network.

Setpoint Functions      
To display and adjust setpoints (MN-S3, MN-S3HT, MN-S4, MN-S4HT, MN-S4-FCS, MN-S4HT-FCS, MN-S5, and MN-S5HT)

1. Press Setpoint Key to change from the current display value to the first setpoint slot. (Press Up/Down key on MN-S3, MN-S3HT, MN-S4-FCS, and MN-S4HT-FCS. Key must be released and pressed again to change ) The sensor displays first setpoint and corresponding icon (heat, cool, unoccupied heat, or unoccupied cool). MN-S3 or MN-S3HT will not display icons.

Note

• The MN-S3, MN-S3HT, MN-S4-FCS, and MN-S4HT-FCS models have one setpoint slot, and the MN-S4, MN-S4HT, MN-S5, and MN-S5HT models have four setpoint The setpoint assigned to each slot depends on controller application and sensor’s configuration.
• If the sensor does not respond when you press the Setpoint Key, all setpoints slots are unassigned or not
• Continue to press Setpoint Key to scroll through the setpoint slots. Before the next setpoint appears, “-2-” will appear to indicate you are about to view the second setpoint (“-3-” indicates the third setpoint, “-4-” indicates the fourth setpoint)
• Press Up/Down Key as necessary to adjust any setpoint. (On MN-S3, MN-S3HT, MN-S4-FCS, and MN-S4HT-FCS, Key must be released and pressed again to change setpoint.
• To enter new setpoint, press any key besides Up/Down Key or wait five seconds. (On MN-S4-FCS and MN-S4HT-FCS do not press any Simply wait five seconds and the setpoint will be entered.)

Wink
The MN-Sx sensors will flash the red Override Status LED (½ second ON, ½ second OFF) while the connected controller is in wink mode (approximately 12 seconds).

Note:

• This feature is available with the MN-S1 through MN-S5 and MN-S1HT through MN- S5HT sensors, but not the MN-S4-FCS or MN-S4HT-FCS
• This feature is supported by I/A Series MicroNet Controllers beginning with the following versions: MNL-11RF3, MNL-13RF3, MNL-5Rx3, MNL-VxRV3, MNL-10Rx3, MNL-10RH3-702, MNL-15Rx3, MNL-20Rx3.

LCD Icon Descriptions

Table-3 I/A Series MicroNet Sensor LCD Icon Descriptions

LCD icons and icon definition vary depending on the connected I/A Series MicroNet Controller and its application. Refer to the application documentation for more information

Service

Table-4 Troubleshooting

Sensor Condition	Corrective Action
LCD remains blank.	•    Check sensor and controller wiring and correct, if necessary. •    If wiring is okay, check to see if power is being applied to the sensor by pushing the Override Key for less than four seconds. If the Override LED lights up, the sensor is powered. If the Override LED does not light up, the sensor may not be receiving power. Check controller power to verify presence. •    If the above measures do not address the problem, download a new application to the controller.
Sensor displays “Abn” indefinitely.	•    Check the documentation to make sure the sensor model is compatible with the controller application and then choose one of the following options. •    If the sensor and application are compatible, download a new application to the controller. •    If the sensor and application are incompatible, download an application that is compatible with the sensor. Or, install a sensor that is compatible with the controller application.
All LCD icons light up and remain lit.	•    Check to see if the controller is constantly resetting and correct, if necessary. •    Check sensor and controller wiring and correct, if necessary. •    If reset and wiring are okay, download a new application to the controller. •    If the above measures do not address the problem, the controller may need to be configured. For configuration instructions, consult documentation associated with the network management tool.

Components within I/A Series MicroNet Sensors can not be field repaired. If there is a problem with a sensor, follow the steps below before contacting your local Schneider Electric office.

1. Make sure sensors are connected and communicating to desired
2. Record precise hardware setup indicating the following:
   • Version numbers of applications
   • Controller firmware version
   • Information regarding the WorkPlace Tech Tool application

A complete description of difficulties encountered.On October 1st, 2009, TAC became the Buildings business of its parent company Schneider Electric. This document reflects the visual identity of Schneider Electric, however there remains references to TAC as a corporate brand in the body copy. As each document is updated, the body copy will be changed to reflect appropriate corporate brand changes.Copyright 2009, Schneider Electric All brand names, trademarks and registered trademarks are the property of their respective owners. Information contained within this document is subject to change without notice.Schneider Electric 1354 Clifford Avenue www.schneider-electric.com/buildings
P.O. Box 2940
Loves Park, IL 61132-2940
F-26277-9

References:

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