Schneider Electric TM3AQ4 – 4-Channel Analog Output Module | Modicon TM3 Platform
Engineering Background
The TM3AQ4 is a dedicated analog output expansion module engineered by Schneider Electric for the Modicon TM3 I/O system. Designed to integrate seamlessly with the M221, M241, and M251 logic controllers, it extends control capability to process-critical analog actuators — including proportional valves, variable-speed drives, positioners, and analog-controlled transmitters — without requiring additional signal conditioning hardware.
Product Positioning
Targeted at OEM machine builders, system integrators, and process automation engineers, the TM3AQ4 delivers industrial-grade analog output performance in a compact DIN-rail form factor. Its 12-bit resolution and dual-mode output (voltage/current) make it the preferred choice for applications demanding precise, repeatable analog control across harsh industrial environments.
Complete Technical Specifications
- Part Number: TM3AQ4
- Manufacturer: Schneider Electric (Modicon)
- Module Type: Analog Output Expansion
- Number of Channels: 4 (configurable per channel)
- Output Signal Types: 0–10 V (voltage) / 4–20 mA (current), selectable per channel
- Resolution: 12-bit (4096 steps)
- Accuracy: ±0.5% of full scale at 25°C
- Update Time: ≤ 4 ms per channel
- Supply Voltage: 24 V DC (±10%), supplied via TM3 bus
- Power Consumption: ≤ 1.5 W (internal bus)
- Load Impedance (Voltage): ≥ 1 kΩ
- Load Impedance (Current): ≤ 500 Ω
- Short-Circuit Protection: Yes (voltage output)
- Isolation: Non-isolated (referenced to common ground)
- Operating Temperature: 0°C to +55°C
- Storage Temperature: −25°C to +70°C
- Relative Humidity: 10–95% non-condensing
- Protection Rating: IP20
- Mounting: DIN rail (35 mm), TM3 bus connector
- Dimensions (W × H × D): 27.4 × 90 × 81.5 mm
- Weight: ~150 g
- Certifications: CE, UL, cUL, RCM, EAC
- Compatible Controllers: TM221C / TM241C / TM251MESE / TM251MESC series
- Max Modules per Controller: Up to 7 TM3 expansion modules
- Programming Environment: EcoStruxure Machine Expert (SoMachine)
Proven Application Environments
- Process Control: Proportional valve positioning, flow control loops, pressure regulation
- Drive Control: Speed reference signals to VFDs (Variable Frequency Drives) via 4–20 mA or 0–10 V
- HVAC Automation: Damper actuator control, chiller setpoint transmission
- Packaging Machinery: Tension control, web guiding, fill-level regulation
- Water & Wastewater: Pump speed modulation, dosing pump control
- Food & Beverage: Temperature setpoint output, conveyor speed reference
- Building Automation: Lighting dimming control, AHU modulation
Engineering Advantages
- Dual-Mode Flexibility: Each channel independently configurable for voltage (0–10 V) or current (4–20 mA) output — eliminates the need for separate modules per signal type.
- 12-Bit Resolution: Provides 4096 discrete output levels for smooth, precise analog control — critical for PID loops and proportional actuators.
- Plug-and-Play TM3 Bus: Side-mounted TM3 expansion bus connector enables tool-free module addition without rewiring the controller.
- Compact Footprint: 27.4 mm width minimizes panel real estate — ideal for space-constrained control cabinets.
- EcoStruxure Integration: Full auto-detection and parameterization within EcoStruxure Machine Expert — no manual address configuration required.
- Short-Circuit Protected Outputs: Voltage outputs are electronically protected against wiring faults, reducing field commissioning risk.
System Architecture & Signal Flow
The TM3AQ4 connects directly to the right-hand expansion bus of a compatible Modicon M221/M241/M251 controller. The controller’s CPU communicates with the module via the internal TM3 bus at high speed, mapping each analog output channel to a dedicated memory word in the controller’s I/O image table. The engineering workflow is as follows:
- Step 1 – Hardware Assembly: Snap TM3AQ4 onto DIN rail and connect to controller via TM3 bus clip.
- Step 2 – Software Detection: EcoStruxure Machine Expert auto-detects the module upon project scan; assign I/O addresses.
- Step 3 – Channel Configuration: Set each channel output type (V or mA) and scaling parameters in the I/O configuration table.
- Step 4 – Wiring: Connect field devices to screw terminals per channel wiring diagram (refer to TM3AQ4 installation sheet).
- Step 5 – Commissioning: Use the online diagnostic view to force output values and verify field device response before going live.
Sourcing & Quality Verification
- Origin: Genuine Schneider Electric OEM product — sourced through authorized industrial distribution channels.
- Condition: New-in-box (NIB) or factory-refurbished with full functional test — clearly stated per listing.
- Traceability: Each unit carries Schneider Electric’s original part label with date code and serial number for warranty and authenticity verification.
- Inspection: Pre-shipment visual and electrical inspection performed by Konmask technical staff.
- Packaging: Ships in original or equivalent ESD-safe packaging with protective foam insert.
Procurement Process
- Lead Time: In-stock items ship within 1–3 business days; contact us for bulk order scheduling.
- MOQ: 1 unit (no minimum order quantity for standard stock).
- Volume Pricing: Tiered discounts available for orders of 5+ units — request a formal quotation via support@konmask.com.
- Documentation: Datasheet, installation guide, and certificate of conformity available upon request.
- Export Compliance: HS Code 8537.10 — standard industrial control equipment; no export license required for most destinations.
- Payment: T/T, PayPal, credit card, and trade credit terms available for qualified accounts.
Technical FAQ
Q: Can TM3AQ4 be used with the M221 controller?
A: Yes. The TM3AQ4 is fully compatible with all TM221C series controllers running EcoStruxure Machine Expert Basic.
Q: How many TM3AQ4 modules can I add to one controller?
A: Up to 7 TM3 expansion modules total per controller (shared across all TM3 module types), subject to the controller’s maximum I/O point count.
Q: Can I mix voltage and current outputs on the same module?
A: Yes. Each of the 4 channels is independently configurable for either 0–10 V or 4–20 mA output in software.
Q: Is external power required for the TM3AQ4?
A: The module draws its logic power from the TM3 bus (24 V DC from the controller). Field-side load power is supplied by the connected device or external 24 V DC supply depending on wiring configuration.
Q: What is the difference between TM3AQ4 and TM3AQ4G?
A: The TM3AQ4G variant includes spring-clamp terminals instead of screw terminals — functionally identical, preferred for vibration-prone environments.
Q: Does Konmask provide technical support for integration?
A: Yes. Our engineering team provides pre-sales technical consultation, wiring diagram review, and EcoStruxure configuration guidance. Contact support@konmask.com.
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