TU845 3BSE021447R1 Module Termination Unit, China TU845 3BSE021447R1 Module Termination Unit Manufacturers, Suppliers, Factory

Overview

Place of Origin:	Sweden
Brand Name:	ABB
Model Number:	TU845 3BSE021447R1
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Specifications

Parameter	Value
Model	TU845 3BSE021447R1
Type	Redundant
Connection	Terminal block
Channels	8
Voltage	50 V
Mounting	Vertical
Mounting detail	55 º (131 °F)
Compatible I/O	AI845, AI880, AI880A, DP840
Process connections	40 up to 8 I/O channels (2 terminals per channel), 4 Process power, 20 Process power (0 V)
Single/redundant I/O	Redundant
Max current per I/O channel	2 A
Max current process connection	5 A
Acceptable wire sizes	Solid: 0.2 - 4 mm²; Stranded: 0.2 - 2.5 mm², 24 - 12 AWG
Recommended torque	0.5 - 0.6 Nm
Stripping length	7 mm
Dielectric test voltage	500 V a.c.
Width	131 mm (5.16”) including connector, 124 mm (4.88”) edge to edge installed
Depth	64 mm (2.52”) including terminals
Height	186.5 mm (7.34”) including locking device
Weight	0.6 kg (1.3 lbs.)

Description

The TU845 3BSE021447R1 MTU can have up to 8 I/O channels and 2+2 process voltage connections. Each channel has two I/O connections and one ZP connection. Input signals are connected via individual shunt sticks, TY801. The shunt stick is used to choose between voltage and current input. The maximum rated voltage is 50 V and maximum rated current is 2 A per channel.

The MTU distributes the two ModuleBuses, one to each I/O module and to the next MTU. It also generates the correct address to the I/O modules by shifting the outgoing position signals to the next MTU. It has a mechanical latch that locks the MTU to the DIN rail.

Four mechanical keys, two for each I/O module, are used to configure the MTU for different types of I/O modules. This is only a mechanical configuration and it does not affect the functionality of the MTU or the I/O module. Each key has six positions, which gives a total number of 36 different configurations.

Environment and certification

Parameter	Value
CE mark	Yes
Electrical safety	EN 61010-1, UL 61010-1, EN 61010-2-201, UL 61010-2-201
Hazardous Location	C1 Div 2 cULus, C1 Zone 2 cULus, ATEX Zone 2
Marine certification	-
Temperature, Operating	0 to +55 °C (+32 to +131 °F), approvals are issued for +5 to +55 °C
Temperature, Storage	-40 to +70 °C (-40 to +158 °F)
Pollution degree	Degree 2, IEC 60664-1
Corrosion protection	ISA-S71.04: G3
Relative humidity	5 to 95 %, non-condensing
Max ambient temperature	55 °C (131 °F)
Protection class	IP20 according to IEC 60529
Mechanical operating conditions	IEC/EN 61131-2
EMC	EN 61000-6-4, EN 61000-6-2
Overvoltage categories	IEC/EN 60664-1, EN 50178
Equipment class	Class I according to IEC 61140 (earth protected)
RoHS compliance	EN 50581:2012
WEEE compliance	DIRECTIVE/2012/19/EU

Applications

Chemical plants: Precise opening control of reactor regulating valves to ensure safe chemical reactions.

Oil refineries: Pressure regulation and flow control of crude oil transportation pipelines.

Power plants: Actuator drive for turbine bypass systems or feedwater pumps.

Paper mills: Proportional valve drive for pulp proportioning control systems.

Wastewater treatment plants: Redundant control of large water pump frequency converter signals.

Features and benefits

Complete installation of I/O modules using 2-wire connections and field power distribution.

Up to 8 channels of field signals and process power connections.

Connections to two ModuleBuses and I/O modules.

Mechanical keying prevents insertion of the wrong I/Omodule.

Latching device to DIN rail for grounding.

DIN rail mounting.

FAQ

Q: How many signal connections does the TU845 3BSE021447R1 support?
A: It provides 3 sets of 25 screw terminals each, primarily for interfacing with two redundant I/O modules.

Q: What is the maximum voltage the TU845 3BSE021447R1 terminal unit can handle?
A: Its rated isolation voltage is up to 50V DC.

Q: If one of the I/O modules fails, can I simply unplug it from the TU845 3BSE021447R1?
A: Yes, the TU845 3BSE021447R1 supports hot-swapping of modules without affecting the normal operation of the other redundant module.

Q: What is the difference between the TU845 3BSE021447R1 and TU844?
A: The TU845 3BSE021447R1 is specifically designed for connecting redundant I/O modules, while standard models typically support only a single module.

Q: Are there any orientation requirements for installing the TU845 3BSE021447R1?
A: It supports horizontal or vertical mounting on DIN rails, but ensure that the ventilation space meets the manual requirements.