TM3AQ4 Schneider Electric 4-Ch Analog Output Module, 12-Bit

When Precise Analog Control Determines Process Yield

A system integrator recently faced a critical challenge: a Modicon M241 PLC needed to regulate four independent proportional valves in a water treatment skid. The existing analog outputs drifted with temperature, causing inconsistent chemical dosing. The solution required an expansion module with software-selectable voltage and current ranges, high isolation, and verified accuracy. The Schneider Electric TM3AQ4, part of the Modicon TM3 series, addresses this exact scenario with engineering-grade precision.

TM3AQ4 Technical Specifications and Channel Configuration

This analog output module provides four channels, each configurable via software for 0–10 Vdc, ±10 Vdc, 0–20 mA, or 4–20 mA signals. The 12-bit resolution ensures fine control granularity. Accuracy is specified at ±0.2% of full scale at 25 °C, with ±1% full scale over the operating temperature range. Isolation of 1500 V AC between output and supply, plus 500 V AC between output and internal logic, protects against ground loops and noise. The module draws 50 mA at 5 V DC and 80 mA at 24 V DC under full load, operating from a 24 Vdc supply via the TM3 bus.

Key Parameters for Integration

• Channels: 4 analog outputs, individually software-configurable
• Signal ranges: 0–10 V, ±10 V, 0–20 mA, 4–20 mA
• Resolution: 12 bits
• Isolation: 1500 V AC output-to-supply; 500 V AC output-to-logic
• Response time: 1 ms conversion + 1 ms per channel + 1 controller cycle
• Supply voltage: 24 Vdc via TM3 bus
• Operating temperature: 0…+55 °C
• Protection rating: IP20
• Dimensions (H×W×D): 90 × 23.6 × 70 mm
• Weight: 0.115 kg

Installation and Compatibility

The TM3AQ4 mounts directly alongside Modicon M221, M241, M251, and M262 controllers. Wiring uses a removable screw terminal block with 5.08 mm pitch, simplifying field connections. Because the module receives power from the TM3 bus, no separate 24 Vdc supply wiring is required. For precise analog signal integrity, route output cables away from high-voltage switching lines and ensure proper shielding. The IP20 rating suits cabinet installation, and the operating temperature range supports typical industrial environments.

Diagnostics and Reliability

Module status and bus status LEDs provide immediate visual diagnostics. The response time of 1 ms conversion plus 1 ms per channel plus one controller cycle time ensures deterministic updates for closed-loop control. With no moving parts and robust isolation, the TM3AQ4 minimizes downtime. For maintenance, inspect terminal connections periodically and verify accuracy against a calibrated reference during scheduled shutdowns. The active lifecycle status, last verified in 2026-09, confirms ongoing availability.

Ordering and Support

In stock and ready to ship from AutoDCSTech. Contact AutoDCSTech with your exact requirements for precise matching.