SIMATIC ET 200SP AQ 4xU/I ST Analog Output Module

Introduction

This product manual complements the system manual for the SIMATIC ET 200SP distributed I/O system. It provides detailed information on the AQ 4xU/I ST analog output module, enabling system startup and operation.

Safety Information

This manual contains essential safety information for personal protection and prevention of material damage. Safety information is highlighted with a warning triangle. Different levels of danger are indicated as follows:

• DANGER: Indicates that failure to observe preventive measures will result in death or severe personal injury.
• WARNING: Indicates that failure to observe preventive measures can result in death or severe personal injury.
• CAUTION: Indicates that failure to observe preventive measures can result in personal injury.
• ATTENTION: Indicates that failure to observe preventive measures can result in material damage.

Only qualified personnel familiar with the product and its documentation should handle or operate this equipment. Adherence to safety guidelines and warnings is crucial.

Product Description

Characteristics

The module features 4 analog outputs supporting both current and voltage output signals. It offers configurable output ranges:

• Current Output Ranges: ±20 mA (16-bit resolution), 0 to 20 mA (15-bit resolution), 4 to 20 mA (14-bit resolution).
• Voltage Output Ranges: ±10 V (16-bit resolution), ±5 V (15-bit resolution), 0 to 10 V (15-bit resolution), 1 to 5 V (13-bit resolution).
• The module is isolated from the L+ supply voltage.
• It supports module-specific diagnostics.

Supported Functions

• Firmware Update
• I&M Identification Data
• Reparameterization in RUN
• PROFlenergy

Accessories

The following accessories must be ordered separately:

• Labeling strips
• Color identification labels
• Reference identification labels
• Display connection

For more information on accessories, refer to the ET 200SP System Manual: support.automation.siemens.com

Connection

Connection Assignment

The module provides 4 analog outputs (Q0+ to Q3+) and 4 sensor/probe connections (S0+ to S3+). It also includes power connections (L+ 24V DC) and ground (M).

Connection Types:

• 2-wire connection for voltage/current
• 3-wire connection for voltage/current
• 4-wire connection for voltage/current

Figure 2-1: Module View - A visual representation of the AQ 4xU/I ST module.

Figure 3-1: Principle Diagram - A block diagram illustrating the module's internal structure, including bus connection, microcontroller, analog-to-digital converter (CDA), output channels, and diagnostic/power LEDs.

Parameters and Addressing

Output Ranges

The module supports various output ranges for current and voltage, each with specific resolutions:

Parameter Explanation

Key parameters include diagnostic functions (e.g., supply voltage failure, short circuit, overflow, wire break), output type/range selection, reaction to CPU STOP, and substitute values.

Address Space

The module utilizes process image memory for output values and input quality information. The address space configuration depends on whether quality information is enabled.

Figure 4-1: Address Space Diagram - Diagrams showing the process image memory mapping for output values and input quality information.

Alarms and Diagnostics

LED Indicators

The module is equipped with LED indicators for status and errors:

• DIAG LED: Indicates module status (off: not parameterized; flashing: parameterized, no diagnostics; solid: parameterized with diagnostics).
• Channel Status LED: Indicates channel status (off: deactivated; solid: activated).
• PWR LED: Indicates power status (off: L+ supply voltage missing; solid: L+ supply voltage present).

Figure 5-1: LED Indicators - Illustration of the LED indicators on the AQ 4xU/I ST module.

Diagnostic Alarms

The module generates diagnostic alarms for events such as:

• Temporarily unavailable channel
• Short circuit (voltage)
• Over-temperature
• Wire break (current)
• Upper limit exceeded
• Lower limit not reached
• Internal module fault
• Parameterization error
• Load voltage failure

Diagnostic Messages

Diagnostic events are indicated by the DIAG LED and can be read from the CPU's diagnostic buffer. Error codes provide specific information and potential solutions.

Technical Data

General Information

• Firmware Version: V1.1
• Usable BaseUnits: Type BU A0, A1
• Product Function: Yes
• I&M Data: Yes

Engineering

• Configurable with STEP 7 (TIA Portal) from V11 SP2/V13.
• Configurable with STEP 7 from V5.5 SP3.
• PROFIBUS GSD/revision: Revision GSD 5.
• PROFINET GSD/revision: V2.3/-.
• Configuration in RUN (CiR): Reparameterization is possible.

Mounting

The module can be mounted on a rack, front, profile, or directly, but not wall-mounted.

Power Supply

• Type: DC
• Nominal Voltage: 24 V
• Admissible Range (Lower): 19.2 V
• Admissible Range (Upper): 28.8 V
• Polarity Reversal Protection: Yes

Current Input

• Max. Consumption: 150 mA
• Power Dissipation: 1.5 W

Addressing

• Address Space per Module: 8 bytes (+ 1 byte for QI information).

Analog Output Specifications

• Quantity: 4 analog outputs
• Cycle Time (min): 5 ms
• Load Resistance: 2 kΩ (voltage), 500 Ω (current)
• Cable Length (max): 1000 m (shielded), 200 m (voltage output)

Errors/Precision

• Linearity Error: ±0.03%
• Temperature Error: 0.005%/K
• Crosstalk: -50 dB
• Repeatability: ±0.05%
• Practical Error Limit (Voltage): ±0.5%
• Practical Error Limit (Current): ±0.5%

Galvanic Isolation

Isolation exists between channels, between channels and the backplane bus, and between channels and the system electronic supply voltage.

Environmental Conditions

• Operating Temperature: 0 °C to 60 °C (horizontal mounting), 0 °C to 50 °C (vertical mounting).

Dimensions & Weight

• Width: 15 mm
• Weight (approx.): 31 g

Figure 6-1 & 6-2: Derating Curves - Graphs showing the derating curves for allowable load with current output, illustrating the relationship between load capacity (in Ohms) and ambient temperature (°C) for different numbers of active channels, both in horizontal and vertical mounting positions.

Parameter Sets

Parameter Dependencies

Parameter settings can depend on other configurations, especially when using GSD files for PROFINET and PROFIBUS.

Parameterization and Data Structure

Parameters can be modified in RUN mode using the "WRREC" instruction. The module uses a data set structure (e.g., Data Set 128) for parameter transfer, containing information for each channel and module diagnostics.

Analog Value Representation

Resolution of Measured Values

Analog values are digitized and represented as floating-point numbers in two's complement. The module supports 14, 15, and 16-bit resolutions.

Representation of Output Ranges

Detailed tables show the binary, decimal, and hexadecimal representations for various bipolar and unipolar output ranges for voltage and current, including maximum/minimum values and saturation margins.

Resources

Siemens provides extensive online resources:

• Manual Collection ET 200SP: support.automation.siemens.com
• mySupport: Personalize your online support experience. support.industry.siemens.com/My/ww/es
• mySupport: Documentation: Create custom manuals. support.industry.siemens.com
• mySupport: CAx Data: Access product data for CAx/CAe systems. support.industry.siemens.com
• Application Examples: Solutions for automation tasks. support.industry.siemens.com
• TIA Selection Tool: Select, configure, and order automation devices. w3.siemens.com
• SIMATIC Automation Tool: Commissioning and service tool. support.industry.siemens.com
• SIEMENS PRONETA: PROFINET network analysis tool. support.industry.siemens.com