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Product Overview
The Honeywell MU-TDID12 51304441-100 is a 24 VDC digital input Field Termination Assembly (FTA) designed for Honeywell’s PM/APM/HPM-based TotalPlant Solution (TPS) systems. It supports 32-channel digital input signals and provides optical isolation and surge protection, making it ideal for industrial process control environments.
Applications
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Process monitoring in power plants, refineries, and chemical facilities
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Status detection for switches, sensors, and actuators
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Digital signal acquisition in safety and control systems
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Industrial automation and manufacturing systems
Advantages
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Supports up to 32 digital inputs
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Optical isolation for signal integrity and equipment protection
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Compatible with Honeywell MU-PDIX02 and MU-PDIS12 processors
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Easy wiring with removable plug-in isolators
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Conforms to ANSI/IEEE C37.90.1 surge withstand standards
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Compact and robust design suitable for harsh environments
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | MU-TDID12 51304441-100 |
| Input Voltage Range | 20–30 VDC |
| Input Channels | 32 |
| Input Type | Digital (Status or Push-button) |
| Optical Isolation | 1500 VAC RMS or ±1500 VDC |
| Pick-up Voltage (ON) | ≥ 20 VDC |
| Drop-out Voltage (OFF) | ≤ 10 VDC |
| Sense Current (ON) | ≥ 4.5 mA |
| Sense Current (OFF) | ≤ 2.8 mA |
| Input Delay (Max) | 2.0 ms |
| Input Frequency | 0–15 Hz |
| Isolation Technique | Optical |
| Surge Withstand Capability | ANSI/IEEE C37.90.1-1978 |
| Dimensions (W×H×D) | 378 × 278 × 28 mm |
| Weight | 0.62 kg |
Frequently Asked Questions (FAQ)
Q1: How many digital inputs does the MU-TDID12 support?
A1: It supports up to 32 digital input channels.
Q2: What is the acceptable voltage range for inputs?
A2: The input voltage range is 20 to 30 VDC.
Q3: Is the module optically isolated?
A3: Yes, it provides optical isolation of 1500 VAC RMS or ±1500 VDC.
Q4: What kind of processors is the MU-TDID12 compatible with?
A4: It works with MU-PDIX02 and MU-PDIS12 digital input processors.
Q5: What is the maximum input frequency it can detect?
A5: It can detect digital input frequencies up to 15 Hz.
Q6: Does it support sequence of events (SOE) logging?
A6: Yes, when used with MU-PDIS12 processor, it supports SOE with 20 ms resolution.
Q7: Can the FTA be used in hazardous environments?
A7: Yes, with appropriate installation and isolation, it can be used in industrial environments.
Q8: How is field wiring connected?
A8: Via plug-in isolators and standard compression or screw terminals.
Q9: Does it comply with surge protection standards?
A9: Yes, it meets ANSI/IEEE C37.90.1 standards.
Q10: Is redundancy supported?
A10: Redundancy is supported at the processor level, not on the FTA itself.
Related or Similar Models
| Model | Description | Voltage | Channels | Isolation |
|---|---|---|---|---|
| MU-TDID52 | Digital Input FTA 24 VDC w/ conformal coating | 24 VDC | 32 | Optical (1500 V) |
| MU-TDIA12 | Digital Input FTA 120 VAC | 120 VAC | 32 | Optical |
| MU-TDIA22 | Digital Input FTA 125 VDC | 125 VDC | 32 | Optical |
| MU-TDIA62 | Digital Input FTA 240 VAC | 240 VAC | 32 | Optical |
| MU-TDID72 | Packaged 24 VDC Input FTA | 24 VDC | 32 | Optical |
| MU-PDIX02 | Digital Input Processor | N/A | 32 | N/A |
Popular Honeywell Models
| Model | Description | Voltage | Channels | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| MU-TAIH12 | High-Level Analog Input FTA | V/I | 16 | 378 × 278 × 28 | 0.65 |
| MU-PAOX03 | 8-Point Analog Output Processor | 4-20 mA | 8 | 378 × 278 × 28 | 0.68 |
| MU-PAOY22 | 16-Point Analog Output Processor | 4-20 mA | 16 | 378 × 278 × 28 | 0.70 |
| MU-PSTX03 | Smart Transmitter Interface Processor | DE Protocol | 16 | 378 × 278 × 28 | 0.66 |
| MU-PDIX02 | Digital Input Processor | N/A | 32 | 378 × 278 × 28 | 0.62 |
| MU-PDIS12 | Sequence of Events Digital Input Processor | 24 VDC | 32 | 378 × 278 × 28 | 0.62 |
