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ABB AC500 V2 TB521-ETH Ethernet Terminal Base with Two Communication Slots

ABB AC500 V2 TB521-ETH Ethernet Terminal Base with Two Communication Slots

ABB AC500 V2 Ethernet Terminal Base

Complete Model

TB521-ETH

Official Product Description

ABB TB521-ETH terminal base for one AC500 processor module and two communication modules, with Ethernet RJ45 networking.

CORE FEATURE: Two communication-module slots with AC500 processor, serial and Ethernet interface connections.

LEAD TIME: In stock

WARRANTY: 1 year

Email Inquiry [email protected]

WhatsApp +86 18159889985

Appurtenance:

abb ac500 v2 tb521 eth ethernet terminal base with two communication slots-1

Overview
Technical Data
Inquiry
Applications & Features
Connections
Installation
Environment
FAQ
Recommend Models
Recommended Products

Product Overview

TB521-ETH is an ABB AC500 V2 terminal base identified by order number 1SAP 112 100 R0270.

The base accepts one compatible AC500 processor module and two communication modules. It provides the processor connections for I/O bus, COM1, COM2 and FieldBusPlug together with the Ethernet RJ45 connection used by a compatible Ethernet CPU.

It is intended for horizontal or vertical installation on a 35 mm DIN rail or for screw mounting with the specified ABB wall-mounting accessories.

Technical Data

Complete model	TB521-ETH
Brand	ABB
Product family	AC500 V2
Product type	CPU and communication-module terminal base
Order number	1SAP 112 100 R0270
Processor slots	1
Communication-module slots	2
Supply connection	24 V DC via removable 5-pin spring terminal block
Maximum current consumption	0.4 A from 24 V DC, including the installed processor, communication modules and I/O bus supply
Interfaces	I/O bus, COM1, COM2, FieldBusPlug and Ethernet RJ45 through the compatible processor
Dimensions	123.5 x 135 x 28 mm, width x height x depth
Weight	200 g terminal base without processor module
Mounting	Horizontal or vertical; 35 mm DIN rail or screw mounting
Protection rating	IP20 when correctly assembled and unused slots are covered
Official source	ABB data sheet 3ADR010066, revision 14; relevant pages 1 to 4

Inquiry

CONTACT

STELLA

Email Inquiry [email protected]

WhatsApp +86 18159889985

Applications & Features

Two communication positions

The base provides two plug-in positions for compatible AC500 communication modules.

Processor and I/O integration

One processor position and the 10-pin I/O bus support the modular AC500 station layout.

Ethernet CPU connection

The RJ45 network connection is used with compatible AC500 Ethernet processor modules.

Serial and fieldbus access

COM1, COM2 and FieldBusPlug connections are available through the terminal-base assembly.

Connections

Power supply	Removable 5-pin spring terminal block for 24 V DC.
Network	Ethernet RJ45 connection for a compatible AC500 Ethernet processor module.
Serial COM1	Removable 9-pin terminal block supporting the compatible processor serial interface.
Serial COM2	9-pin D-sub female connection for the compatible processor serial interface.
I/O expansion	10-pin female I/O bus connection for up to 10 compatible terminal units.

Installation

01 - Verify identity

Match TB521-ETH and order number 1SAP 112 100 R0270 on the product label, quotation and packaging.

02 - Check compatibility

Use a compatible AC500 V2 Ethernet processor module and no more than two compatible communication modules.

03 - Mount the base

Install on a 35 mm DIN rail or use TA526 accessories for conductive screw mounting.

04 - Connect interfaces

Wire 24 V DC, COM1 and any required FieldBusPlug connection; connect Ethernet and COM2 as required by the installed CPU.

05 - Complete the station

Install the processor and communication modules, cover unused slots and add compatible I/O terminal units only while safely de-energized.

Environment

Operating temperature

0 to +60 degrees C for standard AC500 operation, subject to the installed processor and modules

Storage and transport

-40 to +70 degrees C

Humidity

Maximum 95 percent, non-condensing

Protection

IP20 for the correctly assembled PLC system with unused communication slots covered

Mounting position

Horizontal or vertical

Installation

35 mm DIN rail or screw mounting using the specified TA526 wall-mounting accessories

FAQ

Q1. How can the exact quoted TB521-ETH be verified?

Match model TB521-ETH and order number 1SAP 112 100 R0270 on the quotation, product label and packaging. Confirm two communication-module positions and the Ethernet RJ45 connection.

Q2. How can New, Used or Refurbished condition be distinguished?

Request current photos of the ABB label, both communication-module slots, processor slot, RJ45 port, COM connectors, I/O bus and DIN-rail latch. Look for insertion wear, bent contacts, repaired plastic or changed labels.

Q3. How should supplier legality and reliability be checked?

Verify the legal entity, registered address, payment beneficiary and traceable sales contact. The written offer should state ABB, TB521-ETH, 1SAP 112 100 R0270, condition and quantity.

Q4. Which specifications must engineering confirm before purchase?

Confirm AC500 V2 processor compatibility, two communication-slot requirement, Ethernet CPU interface, 24 V DC supply, 123.5 x 135 x 28 mm space, I/O bus expansion and mounting method.

Q5. What physical evidence should be requested before payment?

Ask for date-marked photos showing the complete label, order number, RJ45 connector, COM1 and COM2, both communication slots, processor slot, I/O bus and sealed packaging.

Q6. Can TB541-ETH or TB523-2ETH replace TB521-ETH?

Not automatically. TB541-ETH has four communication slots and a wider base, while TB523-2ETH is dedicated to PM591-2ETH with two Ethernet interfaces. Match processor compatibility, slot count and exact order code.

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