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Brand: Schneider Electric
Schneider Electric TM3AI8 Modicon TM3 8-Channel Analog Input
Description
TM3AI8 8-channel analog input expansion module
The TM3AI8 is a Schneider Electric product listed in the datasheet as: analog input module, Modicon TM3, 8 inputs, screw, 24V DC. The TM3AI8 is a Modicon TM3 expansion module with eight analogue inputs, screw terminals and a 24 V DC supply. It adds process signal capability to M221, M241 and M251 controllers. Seven Star LLC supplies the TM3AI8 in Oman and the GCC as an independent supplier based in Muscat.
Reading the reference: TM3 is the expansion family, AI marks analogue input and 8 the number of channels.
Technical specifications of the TM3AI8
| Parameter | Specification |
|---|---|
| Manufacturer / part number | Schneider Electric / TM3AI8 |
| Description | analog input module, Modicon TM3, 8 inputs, screw, 24V DC |
| Range of Product | Modicon TM3 |
| Product or Component Type | Analog input module |
| Range Compatibility | Modicon M221; Modicon M241; Modicon M251; Modicon M262 |
| Analogue input number | 8 |
| Analogue input type | Current 4 to 20 mA; Current 0 to 20 mA; Voltage 0 to 10 V; Voltage – 10 to 10 V |
| Analogue input resolution | 12 bits; 11 bits + sign |
| Permissible continuous overload | 13 V voltage; 40 mA current |
| Input impedance | <= 50 Ohm; >= 1 MOhm |
| Sampling duration | 1 ms |
| Conversion time | 1 ms + 1 ms per channel + 1 controller cycle time |
| Absolute accuracy error | ± 1 % of full scale; ± 0.2 % of full scale at 25 °C |
| Repeat accuracy | ±0.5 %FS |
| Cross talk | <= 1 LSB |
| Type of cable | Twisted shielded pairs cable <30 m input |
| Electrical connection | 10 x 1.5 mm² removable screw terminal block with pitch 3.81 mm adjustment for inputs and supply |
| LSB value | 2.44 mV, 0 to 10 V; 4.88 mV, – 10 to 10 V; 4.88 µA, 0 to 20 mA; 3.91 µA, 4 to 20 mA |
| Insulation | Between input and supply 1500 V AC; Between input and internal logic 500 V AC |
| Immunity to microbreaks | 10 ms |
| Temperature drift | ± 0.01 %FS/°C |
| Non-linearity | ± 0.2 %FS |
| Typical current consumption | 40 mA 5 V DC full load; 35 mA 5 V no load; 30 mA 24 V no load; 40 mA 24 V full load |
| Local signalling | 1 LED green PWR |
| Mounting support | Top hat type TH35-15 rail IEC 60715; Top hat type TH35-7.5 rail IEC 60715 plate or panel with fixing kit |
| Height | 90 mm |
| Width | 23.6 mm |
| Depth | 70 mm |
| Net Weight | 0.11 kg |
| IP Degree of Protection | IP20 |
| Product certifications | CE; UKCA; RCM; EAC; CULus; CULus HazLoc |
| Standards | IEC 61131-2 |
| Electromagnetic emission | Radiated emissions 40 dBμV/m QP class A 10 m30 to 230 MHz IEC 55011; Radiated emissions 47 dBμV/m QP class A 10 m230 to 1000 MHz IEC 55011 |
| Ambient air temperature (operation or storage, as listed) | -25 to 70 °C |
| operation | -10 to 35 °C vertical installation |
| Relative humidity | 10 to 95 % without condensation |
| Operating altitude | 0 to 2000 m |
| Pollution degree | 2 |
| Vibration resistance | 3.5 mm 5 to 8.4 Hz on DIN rail; 3 gn 8.4 to 150 Hz on DIN rail |
| Shock resistance | 15 gn 11 ms |
Input data of the TM3AI8
Analogue inputs: 8. Analogue input types: Current 4 to 20 mA; Current 0 to 20 mA; Voltage 0 to 10 V; Voltage – 10 to 10 V. Input resolution: 12 bits; 11 bits + sign.
Analogue inputs convert a 4 to 20 mA or voltage signal to a digital value. Resolution and conversion time are listed in the datasheet, and these determine how well slow process values such as tank level and temperature are measured.
Using the TM3AI8 on an expansion bus
TM3 modules are fitted to the right of the controller and share its power through the bus. The number of modules is limited by the controller and by bus current, which the datasheet states.
Group analog and digital modules so noise on digital outputs does not couple to the analogue wiring.
Selection checklist for the TM3AI8
- Number of inputs: 8.
- Signal type: current or voltage.
- Resolution.
- Controller compatibility.
- Wiring and shielding.
- Bus current budget.
Wiring and scaling the TM3AI8
Use shielded twisted-pair cable, ground the shield at one end, and scale the values in the program. Check the range configuration and test with a calibrator.
Keep spare terminals for future channels.
Typical applications of the TM3AI8 in Oman and the GCC
In Oman and the GCC it reads tank levels, pressures and temperatures on small utility skids.
Dimensions, environment and approvals of the TM3AI8
For the TM3AI8, plan the mounting space from the datasheet: 23.6 mm (W) x 90 mm (H) x 70 mm (D). The TM3AI8 weighs 0.11 kg. Mounting, derating and enclosure choices follow the environmental data below, which should be compared with the actual panel temperature and the dust and humidity of the site in Oman and the GCC.
Ambient temperature limits in the datasheet: -25 to 70 °C. Relative humidity: 10 to 95 % without condensation. Ingress protection: IP20. Operating altitude: 0 to 2000 m. Vibration resistance: 3.5 mm 5 to 8.4 Hz on DIN rail; 3 gn 8.4 to 150 Hz on DIN rail. Shock resistance: 15 gn 11 ms. Standards listed: IEC 61131-2. Certifications listed for this reference: CE; UKCA; RCM; EAC; CULus; CULus HazLoc.
Analogue inputs fail in ways that look like process faults, so a few practical habits help with the TM3AI8. Keep a calibration record for the loop, with the signal at 0, 50 and 100 percent of the range, because the first thing a technician asks during a fault is whether the module or the transmitter has drifted. Take care with the supply of two-wire transmitters: the module does not always power them, and a loop supply must be provided. When mixing current and voltage inputs, set each channel type in the configuration and check that the wiring matches, because a current signal connected to a voltage channel gives a wrong reading but no alarm. In plants with variable speed drives, run analogue cables away from motor cables and ground the shield at one end only. Use the filter or averaging function in the program for noisy signals instead of changing the module.
Information to send with an RFQ for the TM3AI8
- Full reference and quantity required
- Existing equipment, panel or rack it must fit
- Supply voltage, load or signal details of the application
- Required delivery location and timing
- Whether a spare, a replacement or a new installation
Documents and quotation
A datasheet for this product is attached on this page. It lists the electrical, mechanical and environmental data summarised above.
Send us the part number, quantity and application and we will confirm availability and a quotation. Seven Star LLC is an independent supplier in Muscat and does not represent itself as an official channel of the manufacturer.
Other Models in the Se Tm3 Range
Seven Star LLC supplies models from the Se Tm3 range in Oman and the GCC. Compare the related models below and request a quote for the one that matches your application.
| Model | Category | |
|---|---|---|
| Schneider Electric TM3DI8 TM3 8-Input 24 V DC Module | PLC & I/O Cards | View details |
| Schneider Electric TM3DQ16T TM3 16-Output Transistor Module | PLC & I/O Cards | View details |
| Schneider Electric TM3AI4 TM3 4-Channel Analog Input | PLC & I/O Cards | View details |
| Schneider Electric TM3AI8 Modicon TM3 8-Channel Analog Input | PLC & I/O Cards | You are viewing this model |
Datasheets & Documents
- Datasheet Schneider Electric TM3AI8 Datasheet Download
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About brand
Schneider Electric is the French group for energy management and industrial automation: low and medium voltage switchgear and circuit breakers, motor control, drives, PLCs, power monitoring, UPS systems and building management. Its history goes back to 1836, when the brothers Adolphe and Eugène Schneider took over the iron and steel works at Le Creusot in Burgundy. Over the 20th century the company left steel and heavy engineering and became an electrical group through acquisitions such as Merlin Gerin, Télémécanique, Square D and Modicon. Its head office is in Rueil-Malmaison near Paris, and its shares are listed on Euronext Paris.
Schneider Electric company profile
| Origins | 1836, Le Creusot, France: Adolphe and Eugène Schneider take over the Le Creusot foundry |
|---|---|
| Headquarters | Rueil-Malmaison (Paris region), France |
| Ownership | Public company listed on Euronext Paris |
| Key acquisitions | Télémécanique (1988), Square D (1991), Merlin Gerin (1992), Modicon (1997), APC (2007), Invensys (2014); majority owner of AVEVA software |
| Brand names still in use | Acti9, ComPacT and MasterPacT breakers, TeSys motor control, Altivar drives, Altistart soft starters, Modicon PLCs, Harmony control components, PowerLogic and Easergy protection and metering, APC UPS, EcoStruxure software platform |
| Product families | Low voltage distribution, medium voltage switchgear and protection relays, motor control and drives, PLCs and HMIs, power meters, UPS and cooling, enclosures, building automation and energy software |
Milestones
- 1836: The Schneider brothers acquire the Le Creusot works; the business grows in steel, locomotives and heavy engineering.
- 1975: First investment in Merlin Gerin, a French maker of electrical distribution equipment.
- 1988–1992: Télémécanique, Square D (USA) and Merlin Gerin join the group, making it an electrical specialist.
- 1997: Modicon, the company behind the first programmable logic controller, joins the group.
- 1999: The group takes the name Schneider Electric.
- 2007 and 2014: APC (UPS and data centre power) and Invensys (process automation) are acquired.
Choosing Schneider Electric breakers and motor control
Circuit breakers are chosen by current and breaking capacity. Acti9 miniature circuit breakers (iC60, C120) protect final circuits up to 125 A. ComPacT NSX molded case breakers cover about 16 to 630 A, and the letter after the frame size sets the breaking capacity: B, F, N, H, S, L from lowest to highest. MasterPacT air circuit breakers are used as main incomers on large switchboards. For motors, a TeSys contactor with an LRD overload relay or a GV2 motor circuit breaker suits direct starting, an Altistart soft starter reduces starting current, and an Altivar drive controls speed. The breaking capacity must always be at least the prospective short-circuit current at the point of installation.
Where Schneider Electric products are used
In Oman and the GCC, Schneider Electric equipment is found in main and sub-main switchboards of commercial and residential buildings, motor control centres in water, oil and gas and industrial plants, substations protected by Sepam and Easergy relays, data centres powered by Galaxy and APC UPS systems, and buildings controlled by EcoStruxure Building Operation.
APC by Schneider Electric: UPS and critical power
Since 2007, APC has been part of Schneider Electric and is now its product brand for uninterruptible power supplies, replacement batteries, battery packs, network management cards and rack power distribution. Our APC catalogue covers Smart-UPS line-interactive and on-line models, Easy UPS On-Line, the modular Symmetra LX, RM and PX ranges, Silcon three-phase systems and their spare part kits, and the RBC cartridges that keep them running. Schneider Electric breakers, drives and PLCs can be quoted together with APC UPS systems in one request.
Schneider Electric products we list
| Family | Examples |
|---|---|
| Circuit breakers | Acti9 iC60N, C120N, NSX100F, NSX250N, NSX630, EasyPact EZC, MasterPacT MTZ1, MasterPacT NW |
| Motor control | TeSys Deca LC1D, TeSys F, LRD overload relay, GV2ME08, Altistart 22, Altistart 480 |
| Drives | Altivar 12, Altivar 320, ATV340, Altivar Process 630, ATV930, Lexium 32 servo |
| PLCs, HMIs and relays | Modicon M221, M241, M580 BMEP582040, Zelio Logic, Magelis HMISTU655 |
| Protection, metering and power | Sepam series 20, Easergy P3U30, MiCOM P139, PM5560, iEM3255, Galaxy VS UPS |
Ordering Schneider Electric products: what we need
Send the commercial reference from the label (for example LC1D18M7 or ATV320U22N4C). For breakers, confirm the rated current, number of poles, breaking capacity and trip unit. For contactors, give the coil voltage. For drives, give the motor power and supply voltage. APC products are listed on their own brand page.
Facts checked against Schneider Electric's published company history, October 2026.
Browse Schneider Electric products by category: Circuit Breaker, Electrical & Power Modules, AC Drives, PLC & I/O Cards, Metering Systems, UPS and Batteries.
FAQ
Questions about the Schneider Electric TM3AI8 Modicon TM3 8-Channel
Answers from our engineering team on installation, compatibility and integration.
01What is the net weight of the TM3AI8?
The datasheet gives 0.11 kg.
02What ingress protection does the TM3AI8 list?
Stated as IP20.
03Which standards does the TM3AI8 list?
Listed: IEC 61131-2.
04Which product range does the TM3AI8 belong to?
The datasheet lists the range as Modicon TM3.
05What are the dimensions of the TM3AI8?
The datasheet gives a width of 23.6 mm; see the table for height and depth.
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