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Home > Electrical & Electronics > Electrical Control System > Allen-Bradley 1756-OA16I Discrete AC Output Module

Allen-Bradley 1756-OA16I Discrete AC Output Module

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Allen-Bradley 1756-OA16I Discrete AC Output Module photo-1

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Allen-Bradley 1756-OA16I Discrete AC Output Module photo-3

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Other, Global universal model

Condition:

Other, Global universal model

Task:

Other, Global universal model

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Guizhou Yuanmiao Automation Equipment Co., Ltd.

1Yr

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Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
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Material Other, Global universal model

Condition Other, Global universal model

Task Other, Global universal model

Mathematical Model Other, Global universal model

Signal Other, Global universal model

Customized Non-Customized

Structure Other, Global universal model

Operating temperature 0°C to 60°C

Humidity 5% - 95% (non - condensing)

Power Input 24V DC

I. Overview

1756-OA16I is a digital output module in Rockwell Automation's ControlLogix series. It is mainly used to convert digital signals from the control system into switching signals that can drive external actuators, serving as an important bridge connecting the control core and on-site equipment in industrial automation systems.

This module can seamlessly integrate with ControlLogix series controllers (such as 1756-L73, 1756-L84ES, etc.), receive control commands from the controller, and convert them into signals that can directly control actuators such as relays, solenoid valves, contactors, and indicator lights. Thus, it realizes the control of starting/stopping and action switching of various equipment in industrial sites. With its high reliability and stable performance, 1756-OA16I is widely used in automated production lines and equipment control in industries such as automobile manufacturing, mechanical processing, warehousing and logistics, and food and beverage.

II. Technical Parameters

Output channels: Equipped with 16 independent digital output channels, which can control 16 external actuators simultaneously. It meets the needs of multi-equipment collaborative work in medium-sized automation systems and improves the control efficiency and flexibility of the system.

Output signal type: Adopts relay output mode. This type of output has strong versatility, can adapt to different types of loads such as AC or DC, and has good electrical isolation effect, which can protect the module and control system from external circuit interference and influence to a certain extent.

Rated load capacity: Each output channel has a certain load driving capacity, usually capable of driving AC 250V/2A or DC 30V/2A loads (specific parameters are subject to the product manual). It can meet the driving needs of equipment such as small solenoid valves, indicator lights, micro motors, and contactor coils.

Electrical isolation: An electrical isolation design is adopted between the output channels and the backplane bus. The isolation voltage can generally reach more than 2500V AC, which effectively blocks the propagation of external interference signals, prevents external high voltage and large current from damaging the control system, and ensures the stable operation of the system. At the same time, there may be certain isolation between output channels to prevent a fault in one channel from affecting others.

Response time: The response time of relay output is at the millisecond level, which can quickly respond to commands from the control system, ensuring that the actuator acts in a timely manner and meeting the real-time requirements of general industrial control scenarios.

Power supply requirements: Powered by the ControlLogix rack power module where it is located, with a typical supply voltage of 5V DC. It has low power consumption, imposes little burden on the system power supply, and is convenient for system integration and installation.

Environmental adaptability:

Operating temperature: Can work stably within the temperature range of 0°C - 60°C, and can cope with common temperature fluctuations in industrial sites.
Relative humidity: Can operate normally in a relative humidity environment of 5% - 95% (non-condensing), suitable for humid production workshops and other environments.
Vibration and shock resistance: Complies with relevant industrial standards (such as IEC 61131-2), has certain vibration and shock resistance capabilities, and can work reliably in occasions with slight vibrations (such as near production lines and machine tools).

III. Functional Characteristics

Reliable output control: The relay of each output channel has stable switching performance, which can reliably connect or disconnect the load circuit, ensuring that the actuator acts accurately according to the commands of the control system, and improving the stability and reliability of the industrial production process.

Effective electrical isolation: The multiple electrical isolation design can not only prevent external interference signals from entering the control system but also avoid the impact of a fault in one channel on other channels and the entire system, enhancing the safety and anti-interference ability of the system.

Intuitive status indication: Each output channel on the module is equipped with an LED status indicator. When the channel output is "ON", the indicator light is on; when the output is "OFF", the indicator light is off. Operators can quickly understand the working status of each channel through the indicators, which is convenient for system debugging, operation monitoring, and fault troubleshooting.

Convenient installation and integration: Adopts a standardized rack mounting method, making the installation process simple and fast. It can be flexibly combined with other modules in the ControlLogix series (such as input modules, controllers, etc.) to form a compact automation control system. At the same time, the module is compatible with Rockwell Automation's Logix Designer programming software, facilitating users to configure the system and debug programs, and realizing seamless connection with the entire automation system.

Certain overload protection capability: Some models may have a certain overload protection function. When the load current connected to the output channel exceeds the rated value, it can protect the relay from damage to a certain extent and extend the service life of the module.

IV. Common Faults and Solutions

No signal output from the output channel
Phenomenon: The control system has sent a control command, but there is no signal output from the corresponding output channel, the external actuator does not act, and the LED indicator of the channel is off.

Causes and solutions:

Incorrect channel configuration: Check whether the channel parameter settings of the module in the programming software, such as output address and signal type, are correct. Reconfigure the parameters correctly, download the program, and test again.
Abnormal power supply: Check whether the power supply voltage of the module is within the specified range (such as 5V DC) and whether the power supply line has poor contact or disconnection. Use a multimeter to measure the power supply voltage, repair the power supply line or replace the power module to ensure normal power supply.
Relay damage: If the channel configuration and power supply are normal, the relay of the channel may be damaged. Switch the control signal to another standby channel. If the standby channel works normally, it indicates that the relay of the original channel is damaged, and the module needs to be repaired or replaced.

Output signal cannot drive the load
Phenomenon: The LED indicator of the module's output channel is on, but the external actuator does not act or acts abnormally.

Causes and solutions:

Load fault: Check whether the actuator (such as solenoid valve, relay, etc.) is damaged and whether the load power supply is normal. Use a multimeter to detect the on-off and resistance value of the load, replace the damaged load; check the voltage and current of the load power supply to ensure they meet the load requirements.
Line problem: Check whether the connection line between the module output end and the load is broken, and whether the connector is loose or oxidized. Reconnect the line, clean the oxide layer of the connector and fasten it to ensure the line is unobstructed.
Load overload: If the load current exceeds the rated load capacity of the channel, the relay will not be able to drive the load normally. Replace the actuator that meets the rated load requirements, or add an intermediate relay to drive the large load.

Module communication failure
Phenomenon: The module cannot communicate with the controller, the controller cannot configure the module or send commands, and the module status information cannot be uploaded.

Causes and solutions:

Connection failure: Check whether the connection between the module and the rack is firm and whether the backplane bus has poor contact. Re-plug the module to ensure reliable connection.
Mismatched communication parameters: Confirm whether the communication parameters of the module (such as address) are consistent with the settings of the controller. Reset the module communication parameters in the programming software to match the controller.
Module hardware failure: If the connection and parameters are normal, the internal circuit of the module may be damaged. Contact professional maintenance personnel for inspection and replace the module if necessary.

Product Tags: Allen-Bradley , 1756-OA16I