Model Explanation

51309154-125: Honeywell Material Number

MU-TDOR27: Module Model

MU = Module Unit (FTA Series)

TDOR = Total Digital Output Relay (Relay Output)

27 = Hardware Version and Channel Configuration Variant Technical Specifications

Channel: 16 independent relay outputs (each channel 1 normally open / 1 normally closed, Form C)

Contact capacity:

AC: 120/240 VAC, 5 A (resistive)

DC: 24 VDC, 5 A (resistive)

Isolation: 1500 V RMS (between channels, between channel and bus, mechanical isolation)

Response time: ≤ 10 ms (mechanical relay)

Switching frequency: Maximum 10 Hz

Power supply: Backplane 24 VDC

Operating temperature: -20°C ~ +70°C

Hot-swappable: Supported

Fault detection: Open circuit / short circuit (system diagnosis)

Interface and status

System side: High-density flat cable connected I/O module

Field side: Removable screw terminals (facilitating wiring maintenance)

Indicator lights: ON/OFF for each channel, OK/FAULT for module

Configuration: DCS workstation software configuration Core function

Mechanical relay true isolation: Completely isolated when contacts are disconnected, resistant to high voltage surges and ground loop interference

Universal for AC and DC: Compatible with common industrial loads of AC 120/240V and DC 24V

Conventional power control: Electromagnetic valves, contactors, small motors, alarm lights, heaters

Long-life stable output: Relay lifespan ≥ 100,000 times (resistive load)

Online replacement (hot-swappable): Maintenance without downtime

System-level diagnosis: Precisely detect channel faults, quickly locate problems Applicable scenarios

Industry: Oil and gas, petrochemicals, power generation, metallurgy, water treatment, chemical industry

Applications: Loads requiring electrical isolation, AC/DC mixed control, conventional power circuits, non-high-frequency conditions

Compatibility: Experion PKS (C200/C300), TDC 3000, TPS