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Home>SIEMENS>Siemens 6ES7288-2QT16-0AA0 | S7-200 SMART QT16 Transistor Output Module
Siemens 6ES7288-2QT16-0AA0 | S7-200 SMART QT16 Transistor Output Module

Siemens 6ES7288-2QT16-0AA0 | S7-200 SMART QT16 Transistor Output Module Item NO.: 2926378

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Product Name Siemens 6ES7288-2QT16-0AA0 | S7-200 SMART QT16 Transistor Output Module
Item NO. 2926378
Weight 0.1 kg = 0.2205 lb = 3.5274 oz
Category SIEMENS
Brand SIEMENS
Creation Time 2026-10-23

Siemens 6ES7288-2QT16-0AA0 | S7-200 SMART QT16 Transistor Output Module

Siemens · SIMATIC S7-200 SMART

Siemens 6ES7288-2QT16-0AA0 | S7-200 SMART QT16 Transistor Output Module

SECTION 01

Product Introduction

Siemens 6ES7288-2QT16-0AA0 is a SIMATIC S7-200 SMART transistor output expansion module with sixteen sourcing MOSFET channels. It drives 24 V DC loads through solid-state outputs and does not include digital input points.

The output stage of Siemens 6ES7288-2QT16-0AA0 operates from 20.4 to 28.8 V DC, supports 0.75 A per point and is divided into four isolated groups limited to 3 A per common. Output transitions are specified below 50 µs when turning on and below 200 µs when turning off.

Field power and logic are separated on Siemens 6ES7288-2QT16-0AA0 by 500 V AC isolation for one minute. Shielded output cabling may extend to 500 m and unshielded cabling to 150 m within the published conditions, but polarity, group supply and load suppression remain part of the installation design.

SECTION 02

Technical Information

Technical dossier Confirmed model-specific values
Brand Siemens
Model 6ES7288-2QT16-0AA0
Product Name EM QT16 digital transistor output module
Country Germany
Dimensions (W × H × D) 45 × 100 × 81 mm
Weight 186 g
Power Dissipation 1.7 W
Signal-Module Bus Current 120 mA
24 V Current 50 mA
Outputs 16 sourcing MOSFET channels
Field Supply 20.4 to 28.8 V DC
Output Current 0.75 A per point; 3 A per common
Isolation Groups 4
Turn-On / Turn-Off <50 µs / <200 µs
Field-to-Logic Isolation 500 V AC for 1 minute
SECTION 03

Performance Characteristics

Siemens 6ES7288-2QT16-0AA0 converts CPU commands into sixteen fast positive-voltage output transitions for supported 24 V DC loads.

Sub-50 µs turn-on›Sub-200 µs turn-off›Frequent switching
01

Sub-50 µs turn-on

The MOSFET stage applies the commanded output in less than 50 µs under the specified electrical conditions.

02

Sub-200 µs turn-off

The channel releases the load in less than 200 µs, avoiding the mechanical delay of a relay output.

03

Frequent switching

Solid-state operation supports repeated transitions without relay-contact wear, while semiconductor current and temperature limits still apply.

SECTION 04

Installation Highlights

Siemens 6ES7288-2QT16-0AA0 requires a correctly polarized field supply for each output group and a separate return path for every load.

01

Four L+/M pairs

Connector assignments distribute the sixteen channels across four field-supply commons with their own L+ and M terminals.

02

Sourcing current path

An active channel supplies positive DC to the load, which returns to the M reference of the same field circuit.

03

Isolation boundary

Field-to-logic isolation separates the output power side from controller logic but does not provide overload protection between a channel and its load.

SECTION 05

Frequently Asked Questions

Why does Siemens 6ES7288-2QT16-0AA0 show an active channel with no load current?

Check that the correct L+/M pair is powered and that the load returns to the matching M terminal on Siemens 6ES7288-2QT16-0AA0. A commanded MOSFET cannot source current through a missing or mismatched field-supply path.

How can output-group overload be prevented on Siemens 6ES7288-2QT16-0AA0?

Add the simultaneous currents in each Siemens 6ES7288-2QT16-0AA0 common and keep the group within 3 A while every point remains within 0.75 A. Provide external protection because the module does not include electronic overload protection.

Why can Siemens 6ES7288-2QT16-0AA0 not drive an AC coil directly?

Siemens 6ES7288-2QT16-0AA0 is a 20.4 to 28.8 V DC sourcing output module. Use a correctly rated interposing device for AC loads rather than applying AC to the MOSFET output terminals.

What should be checked when rapid switching from Siemens 6ES7288-2QT16-0AA0 becomes noisy?

Review cable length, shielding, routing, load suppression and reference potential on Siemens 6ES7288-2QT16-0AA0. Fast output edges can expose coupling and grounding problems that remain hidden during slow manual tests.

Why do several channels on Siemens 6ES7288-2QT16-0AA0 drop at the same time?

Measure the L+/M supply for the affected group on Siemens 6ES7288-2QT16-0AA0 during the event. A common fuse, conductor or supply collapse affects multiple outputs together even when their program commands remain on.

Can Siemens 6ES7288-2QT16-0AA0 replace a relay module without circuit changes?

No direct replacement should be assumed for Siemens 6ES7288-2QT16-0AA0 because it switches polarized 24 V DC rather than isolated dry contacts. Confirm load voltage, polarity, current, isolation and the required de-energized behavior before changing module type.

SECTION 06

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SECTION 08

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