Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Product type | TM PosInput 1 |
| Encoder inputs | RS-422 incremental encoder or SSI absolute encoder |
| Digital inputs | 2; parameterizable |
| Digital outputs | 2 transistor outputs; parameterizable |
| Incremental input frequency | 1 MHz, max. |
| Counting frequency | 4 MHz, max.; with quadruple evaluation |
| SSI clock frequency | 2 MHz, max. |
| Rated supply voltage | 24 V DC |
| Load voltage range | 19.2 V to 28.8 V DC |
| Diagnostics | Supply voltage, wire break, short-circuit, A/B transition, SSI telegram, and group error |
| BaseUnit | BU type A0 |
Applications
- Incremental encoder counting: Counts pulses from incremental encoders, including A/B tracks, pulse encoders, and pulse encoders with direction.
- Absolute position acquisition: Acquires absolute position from SSI encoders with binary or Gray code, including multiturn and singleturn encoders.
- Position detection: Performs incremental and absolute position acquisition and is suitable for S7-1500 Motion Control.
- Frequency and cycle measurement: Measures frequency from 0.04 Hz to 4 MHz and cycle duration from 0.25 μs to 25 s.
Key Features
- Encoder signal support: Supports symmetrical and asymmetrical incremental encoders plus SSI absolute encoders. Incremental inputs support up to 1 MHz input frequency and 4 MHz counting frequency with quadruple evaluation.
- Digital I/O: Provides 2 parameterizable digital inputs and 2 parameterizable transistor digital outputs. Each digital output has a rated signal-1 current of 0.5 A.
- SSI interface: SSI absolute encoder input supports 10 … 40 bit parameterizable telegram length, up to 2 MHz clock frequency, binary or Gray code, parity, multiturn, and singleturn.
- Counter and position functions: Includes 1 counter, continuous counting, parameterizable counter response and counting range, incremental and absolute acquisition, and 2 parameterizable measuring thresholds.
- Diagnostics and isolation: Provides supply-voltage, wire-break, short-circuit, A/B transition, SSI telegram, and group error diagnostics, with PWR, channel-status, and DIAG LEDs. Channels and backplane bus have potential separation.
- Supply and installation: Rated supply voltage is 24 V DC; load voltage is 24 V DC with a permissible range of 19.2 V to 28.8 V. The module is suitable for BU type A0 and uses a type B mechanical coding element.
Frequently Asked Questions
1. What encoder types does the 6ES7138-6BA01-0BA0 support?
It supports RS-422 incremental encoders, 5 V TTL push-pull incremental encoders, and SSI absolute encoders.
2. How many digital inputs and outputs does the module have?
It has 2 parameterizable digital inputs and 2 parameterizable transistor digital outputs.
3. What is the maximum counting frequency?
The maximum counting frequency is 4 MHz with quadruple evaluation.
4. What SSI telegram and clock ranges are supported?
The SSI telegram length is parameterizable from 10 … 40 bit, and the maximum clock frequency is 2 MHz.
5. Which BaseUnit and supply voltage are specified?
The module is suitable for BU type A0. The rated supply voltage is 24 V DC, and the load voltage range is 19.2 V to 28.8 V DC.
