SplusS ATM2-T3-MB Temperature Sensor Instruction Manual

SplusS ATM2-T3-MB Temperature Sensor

Specifications

• Model: ATM2-T3-MB
• Type: Temperature sensor
• Connection: Modbus
• Material: Stainless Steel V2A (1.4301)
• Dimensions: 200 x 180 x 150 mm

Mounting Instructions

1. Ensure the mounting surface is clean and dry.
2. Use appropriate tools to securely mount the sensor in the desired location.
3. Make sure the sensor is positioned properly for accurate temperature readings.

Connection Guide

1. Connect the sensor to the Modbus network using the provided connections.
2. Verify the Modbus address and parameters are correctly set for communication.

Calibration
Calibrate the sensor according to the user manual to ensure accurate temperature readings.

FAQ

1. Q: How do I change the Modbus address of the sensor?
   A: Refer to the user manual for instructions on changing the Modbus address using the DIP switches.

Temperature sensor Type ATM2-T3-MB

Operating and Mounting Instructions

Outside temperature ⁄ wet room temperature measuring transducer, calibratable, with Modbus connection

Type ATM2-T3-MB

Calibratable outside temperature measurement transducer Type ATM 2 – T3 – MB, with Modbus connection, in an impact-resistant plastic housing with quick- locking screws, measures temperature (–50…+150 °C). International system of units SI (default) can be changed to imperial (via Modbus).
The on-wall sensor is used to detect the temperature in gaseous media. It is used outside or in wet rooms, in cold storage buildings and green-houses, in the industrial sector and in agriculture. Installation on outside walls is preferably performed on the north side or in a protected place. In case of direct solar irradiation, we recommend using our sun and ball-impact protection hood WS 03 (accessories).

Innovative Modbus sensor with galvanically separated RS485 Modbus interface, selectable bus termination resistance, DIP switch for setting the bus parameters and bus address in current-free state, internal LEDs for telegram status display, two separate push-in terminals. Uses internal diagnostics to detect sensor breakage or sensor short circuit as errors. The error messages can be retrieved via Modbus. The sensor is factory-calibrated; an environmental precision adjustment by an expert is possible.

TECHNICAL DATA

Type ATM2-T3-MB

Manual offset adjustment

The sensors are pre-set and calibrated at the factory.
For subsequent adjustment of the measured value, there is an offset potentiometer (A) available.

Range of adjustment:
(A) approx. ± 10 °C ⁄ ± 18 °F

Switchable system of units

BUS ADDRESS

• The device address in the range of 1 to 247 is set at DIP switch [A].
• For switch positions 1 to 8 see the table on the back!
• Address 0 is reserved for broadcast messages.
• Addresses greater than 247 must not be assigned and are ignored by the device.

The DIP switches are binary-coded with the following values:

• DIP 1 = 128 ………… DIP 1 = ON
• DIP 2 = 64 ………… DIP 2 = ON
• DIP 3 = 32 ………… DIP 3 = OFF
• DIP 4 = 16 ………… DIP 4 = OFF
• DIP 5 = 8 ………… DIP 5 = OFF
• DIP 6 = 4 ………… DIP 6 = OFF
• DIP 7 = 2 ………… DIP 7 = OFF
• DIP 8 = 1 ………… DIP 8 = ON The switch positions shown here result in the Modbus address 128 + 64 + 1 = 193

BUS PARAMETERS

• The baud rate (speed of transmission) is set at DIP switches 1 and 2 of DIP switch block [B].
• Selectable are 9600 baud, 19200 baud, or 38400 baud – see table!
• Parity is set at DIP switch 3 of DIP switch block [B].
• Selectable are EVEN or ODD – see table!
• Parity check is activated via DIP switch 4 of DIP switch block [B].
• Selectable are active (1 stop bit), or inactive (2 stop bits), i.e. no parity check – see table!
• The 8N1 mode is activated via DIP switch 5 of DIP switch block [B].
• The functionality of DIP switch 3 (parity) and DIP switch 4 (parity check) of DIP switch block [B] is therefore deactivated. Selectable are 8N1 active or inactive (default) – see table !.
• Bus termination is activated via DIP switch 6 of DIP switch block [B].
• Selectable are active (bus termination resistance of 120 Ohm), or inactive (no bus termination) – see table!

COMMUNICATION INDICATOR

Communication is indicated via two LEDs. Error-free received telegrams are signalized by the green LED lighting up, regardless of the device address. Faulty telegrams or triggered Modbus exception telegrams are depicted by the red LED lighting up.

DIAGNOSTICS

An error diagnostic function is integrated

TELEGRAMS

Function 04 Read Input Register

+150.0 °C
| | | | – 580…+ 3020| – 58.0 … +302.0 °F
| | | | – 999…+ 9999| Overflow
3×0002| Temperature| Filtering 1 s| Signed 16 Bit| – 500…+ 1500| – 50.0 … +150.0 °C
| | | | – 580…+ 3020| – 58.0 … +302.0 °F
| | | | – 999…+ 9999| Overflow
3×0002| Temperature| Filtering 10 s| Signed 16 Bit| – 500…+ 1500| – 50.0 … +150.0 °C
| | | | – 580…+ 3020| – 58.0 … +302.0 °F
| | | | – 999…+ 9999| Overflow

Function 02 Read Discrete Input

Note: The addresses 1×0003…1×0008 are read with the value “0”.

Function 05 Write Single Coil

Temperature                                 [°C]         → [°F]

Function 08 Diagnostics
The following sub function codes are supported

(Reset listen-only mode)

| | Echo telegram
04| Activation listen-only mode| | No answer
10| Delete counter| | Echo telegram
11| Counter bus telegrams| Unsigned 16 Bit| All valid bus telegrams
12| Counter communication errors (Parity, CRC, frame errors, etc.)| Unsigned 16 Bit| Faulty bus telegrams
13| Counter exception telegrams| Unsigned 16 Bit| Error counter
14| Counter slave telegrams| Unsigned 16 Bit| Slave telegrams
15| Counter telegrams without answer| Unsigned 16 Bit| Broadcast messages (address 0)

Function 17 Report Slave ID
Composition of answer telegram

Modbus | Installation

• Terminating resistor may only be installed at the ends of the bus line.
• In networks with repeaters not more than two line terminations are allowed.
• Line termination at the device can be activated via DIP switch 6.
• The bias resistors for bus level definition in the resting state are usually activated at the Modbus master / repeater.
• The maximum number of subscribers per Modbus segment is 32 devices.
• When the number of subscribers is greater, the bus must be subdivided into several segments separated by repeaters. The subscriber address can be set from 1 to 247.
• For the bus line, a twisted-pair cable data line / power supply line and copper mesh wire shield must be used. Therefore, the line capacitance should be less than 100 pF / m (e.g. Profibus cable).

Installation and Commissioning

• Devices are to be connected under dead-voltage condition. Devices must only be connected to safety extra-low voltage. Consequential damages caused by a fault in this device are excluded from warranty or liability. These devices must be installed and commissioned by authorised specialists. The technical data and connecting conditions shown on the device labels and in the mounting and operating instructions delivered t ogether with the device are exclusively valid. Deviations from the catalogue representation are not explicitly mentioned and are possible in terms of technical progress and continuous improvement of our products. In case of any modifications made by the user, all warranty claims are forfeited. Operating this device close to other devices that do not comply with EMC directives may influence functionality. This device must not be used for monitoring applications, which serve the purpose of protecting persons against hazards or injury, or as an EMERGENCY STOP switch for systems or machinery, or for any other similar safety-relevant purposes.
• Dimensions of enclosures or enclosure accessories may show slight tolerances on the specifications provided in these instructions.
• Modifications of these records are not permitted.
• In case of a complaint, only complete devices returned in original packing will be accepted.

Notes regarding mechanical mounting and attachment
Mounting shall take place while observing all relevant regulations and standards applicable for the place of measurement (e.g. such as welding instructions, etc.).

Particularly the following shall be regarded:

• VDE ⁄ VDI directive technical temperature measurements, measurement set – up for temperature measurements.
• The EMC directives must be adhered to.
• It is imperative to avoid parallel laying of current-carrying lines.
• We recommend to use shielded cables with the shielding being attached at one side to the DDC ⁄ PLC.

Before mounting, make sure that the existing thermometer‘s technical parameters comply with the actual conditions at the place of utilization, in particular in respect of:

• Measuring range
• Oscillations, vibrations, shocks are to be avoided (< 0.5 g)

Notes on commissioning
This device was calibrated, adjusted and tested under standardised conditions. When operating under deviating conditions, we recommend performing an initial manual adjustment on-site during commissioning and subsequently at regular intervals.
Commissioning is mandatory and may only be performed by qualified personnel!

Important notes

Our “General Terms and Conditions for Business“ together with the “General Conditions for the Supply of Products and Services of the Electrical and Electronics Industry“ (ZVEI conditions) including supplementary clause “Extended Retention of Title“ apply as the exclusive terms and conditions.

In additionIn addition, the following points are to be observed:

• These instructions must be read before installation and putting in operation and all notes provided therein are to be regarded!

• A suitable weather and sun protection hood must be used when installed outdoors.

• Devices must only be connected to safety extra-low voltage and under dead-voltage condition. To avoid damages and errors the device
  (e.g. by voltage induction) shielded cables are to be used, laying parallel with current-carrying lines is to be avoided, and EMC directives are
  to be observed.

• This device shall only be used for its intended purpose. Respective safety regulations issued by the VDE, the states, their control authorities, the TÜV and the local energy supply company must be observed. The purchaser has to adhere to the building and safety regulations and has to prevent perils of any kind.

• No warranties or liabilities will be assumed for defects and damages arising from improper use of this device.

• Consequential damages caused by a fault in this device are excluded from warranty or liability.

• These devices must be installed and commissioned by authorized specialists.

• The technical data and connecting conditions of the mounting and operating instructions delivered together with the device are exclusively valid. Deviations from the catalogue representation are not explicitly mentioned and are possible in terms of technical progress and continuous improvement of our products.

• In case of any modifications made by the user, all warranty claims are forfeited.

• This device must not be installed close to heat sources (e.g. radiators) or be exposed to their heat flow. Direct sun irradiation or heat i irradiation by similar sources (powerful lamps, halogen spotlights) must absolutely be avoided.

• Operating this device close to other devices that do not comply with EMC directives may influence functionality.

• This device must not be used for monitoring applications, which serve the purpose of protecting persons against hazards or injury,
  or as an EMERGENCY STOP switch for systems or machinery, or for any other similar safety-relevant purposes.

• Dimensions of housing or housing accessories may show slight tolerances on the specifications provided in these instructions.

• Modifications of these records are not permitted.

• In case of a complaint, only complete devices returned in original packing will be accepted.

Commissioning is mandatory and may only be performed by qualified personnel!
These instructions must be read before installation and commissioning and all notes provided therein are to be regard!

Temperature sensor Type ATM2-T3-MB

WS-03
Wetter- und Sonnenschutz (optional)
Weather and sun protection (optional)

© Copyright by S+S Regeltechnik GmbH
Nachdruck, auch auszugsweise, nur mit Genehmigung der S+S Regeltechnik GmbH.
Reprint in full or in parts requires permission from S+S Regeltechnik GmbH.

Bus address, binary coded

134r0067/002;1: Frozen :29-Jan-2024

References

• S+S Regeltechnik | Ihr sensorik Partner

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