Product Overview
The ABB TU891 3BSC840157R1 is a compact Termination Unité (MTU) used within the S800 I/O system. It enables mechanical and electrical interfacing between the I/O modules and field wiring. Designed for use with intrinsically safe (IS) analog and digital modules, it ensures proper signal distribution, ModuleBus extension, and mechanical keying for safety-critical installations.
Technical Specifications
| Parameter | Description |
|---|---|
| Article Number | 3BSC840157R1 |
| Type | Compact |
| Channels | 8 |
| Voltage | 24 V |
| Max. Current per Channel | 2 A |
| Dielectric Test Voltage | 500 V AC |
| Dimensions (W x H x D) | 64 x 194 x 58 mm |
| Poids | 0.17 kg |
| Mounting | Horizontal, DIN rail |
| Process Connectors | 27 gray terminals |
| Supported Modules | AI890, AI893, AI895, AO890, AO895, DI890, DO890 |
| Ambient Temperature | 0°C to +55°C (Operation), -40°C to +70°C (Storage) |
| Protection Class | IP20 |
| Wire Sizes (Solid) | 0.2 – 4 mm² |
| Wire Sizes (Stranded) | 0.2 – 2.5 mm², 24–12 AWG |
| Certifications | CE, RoHS, WEEE, ABS, BV, DNV-GL, LR |
| EMC Compliance | EN 61000-6-2, EN 61000-6-4 |
| Safety Standards | IEC 61131, EN 61010-1, EN 61010-2-201 |
Applications
-
Intrinsically safe (IS) analog and digital I/O interfacing
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Distributed control systems using ABB’s 800xA
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Oil & Gas and Petrochemical automation systems
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Power generation control systems
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Marine and surfshore automation environments
Advantages
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Supports IS-rated modules for hazardous areas
-
Compact and efficient DIN rail mounting
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Mechanical keying ensures correct module insertion
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Provides reliable signal distribution and bus extension
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CE, marine, and industrial certifications for wide applicability
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Robust design suitable for harsh environments
Questions fréquentes (FAQ)
Q1: What modules are compatible with the TU891?
A1: Compatible modules include AI890, AI893, AI895, AO890, AO895, DI890, and DO890.
Q2: What is the maximum rated voltage and current per channel?
A2: The unité supports up to 50 V and 2 A per channel.
Q3: Can the TU891 be used in hazardous environments?
A3: Yes, it is designed for intrinsically safe I/O modules used in hazardous areas.
Q4: How is the TU891 mounted?
A4: It is DIN rail-mounted horizontally.
Q5: What wire sizes are supported?
A5: Solid wires 0.2–4 mm², stranded wires 0.2–2.5 mm² (24–12 AWG).
Q6: What certifications does the TU891 hold?
A6: CE, RoHS, WEEE, and marine certifications like ABS, BV, DNV-GL, and LR.
Q7: Does the TU891 include mechanical keying?
A7: Yes, it prevents incorrect module insertion using mechanical keys.
Q8: What is the operating temperature range?
A8: From 0°C to +55°C during operation and -40°C to +70°C in storage.
Q9: Is the TU891 suitable for redundant I/O setups?
A9: No, it supports single I/O configurations only.
Q10: What is the protection rating sur this unité?
A10: It has an IP20 rating according to IEC 60529.
Related Modèles from the Same Series
| Modèle | Description | Dimensions (mm) | Poids |
|---|---|---|---|
| TU810 | Compact MTU | 64 x 194 x 58 | 0.17 kg |
| TU830V1 | Extended MTU with pluggable terminals | 110 x 230 x 63 | 0.24 kg |
| TU812V1 | MTU with relay socket support | 64 x 194 x 58 | 0.17 kg |
| TU851V1 | High integrity MTU | 64 x 194 x 58 | 0.18 kg |
| TU890 | IS MTU for S800 I/O | 64 x 194 x 58 | 0.17 kg |
| TU892 | IS MTU with dual I/O connections | 64 x 194 x 58 | 0.18 kg |
Popular ABB Modèles
| Modèle | Description | Dimensions (mm) | Poids |
|---|---|---|---|
| AI890 | Analog Input Module IS, 8 ch | 87 x 107 x 59 | 0.20 kg |
| AO895 | Analog Output Module IS, 4 ch | 87 x 107 x 59 | 0.22 kg |
| DI890 | Digital Input Module IS, 8 ch | 87 x 107 x 59 | 0.20 kg |
| DO890 | Digital Output Module IS, 8 ch | 87 x 107 x 59 | 0.21 kg |
| PM861K01 | Controller Processor Unité Kit | 197 x 140 x 80 | 1.10 kg |
| CI854AK01 | Prsuribus DP Communication Interface | 87 x 107 x 59 | 0.20 kg |
Informations sur l'entreprise
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Add: Alishan Building, 2 Lvling Rd, District Siming, Xiamen, Fujian, Chine, 361006
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