S7-1500 PLC Parts

6ES7551-1AB00-0AB0

Product details

Product Code
6ES7551-1AB00-0AB0
Dimensions
19.4 × 16.1 × 5 cm
Weight
0.443 kg
Lifecycle
Start of final year of support
Availability
in stock
Lead Time
Confirmed with quotation
Product Attachment
Download Datasheet

Pricing, condition, availability and delivery terms are confirmed against the exact product reference.

Product information

Overview

Applications

  • Encoder counting: Counts pulse and incremental encoder signals, including A/B tracks with 90° phase offset, pulse encoders with direction and pulse encoders with one impulse signal per count direction.
  • Position detection: Performs incremental and absolute acquisition and is suitable for S7-1500 Motion Control.
  • Measurement functions: Performs frequency, cycle duration and velocity measurement with parameterizable measuring time and dynamic measurement period adjustment.

Key Features

  • Counter and position detection: 2 integrated counters support incremental and absolute acquisition, continuous counting, parameterizable counter response and counting range.
  • Encoder interfaces: Supports RS-422 and 5 V TTL push-pull incremental encoders, plus SSI absolute encoders with 10 … 40 bit parameterizable telegram length.
  • Channel capacity and I/O: Provides 2 channels, 4 digital inputs and 4 transistor digital outputs; inputs and outputs are parameterizable, with 2 inputs and 2 outputs per channel.
  • High-speed measurement: Input frequency reaches 1 MHz and counting frequency reaches 4 MHz with quadruple evaluation. Frequency and cycle duration measurement accuracy is 100 ppm, depending on measuring interval and signal evaluation.
  • Supply and mounting: Load voltage is 24 V DC with a permissible range of 19.2 V to 28.8 V and reverse polarity protection. Mounting is on an S7-1500 mounting rail.

Technical Summary

Product type TM PosInput 2
Firmware version V1.3
Channels 2
Encoder inputs RS-422 incremental encoder or SSI absolute encoder
Digital inputs 4; 2 per channel
Digital outputs 4 transistor outputs; 2 per channel
Load voltage 24 V DC; 19.2 V to 28.8 V permissible range
Counting frequency 4 MHz; with quadruple evaluation
Mounting S7-1500 mounting rail

Frequently Asked Questions

What encoder types does Siemens 6ES7551-1AB00-0AB0 support?

It supports RS-422 incremental encoders, 5 V TTL push-pull incremental encoders and SSI absolute encoders.

How many I/O channels does the TM PosInput 2 provide?

It has 2 channels, with 2 digital inputs and 2 transistor digital outputs per channel.

What supply voltage does this module require?

The load voltage is 24 V DC, with a permissible range of 19.2 V to 28.8 V and reverse polarity protection.

Can you quote this exact module for our project?

Send the required quantity, destination and project-list context for a model-specific quotation.

Quote checklist

Quote requirements

Add the details below to help us check availability and prepare a quote for this model.

  • Model or MLFB
  • Quantity and destination
  • Required condition
  • Nameplate or product photo (optional)

Product inquiry

Request a Quote