Isolated Analog Output Modules | Allen Bradley 1794-OF41
The Allen Bradley 1794-OF41 is an isolated analog output module designed to convert digital control data into analog output signals for external devices. It uses a digital-to-analog converter (DAC) with a resolution of 15 bits plus sign. The module provides specified voltage and current conversion values and maintains a zero-current output condition until the module is configured.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1794-OF41 |
| Brand | Allen Bradley |
| Product Type | Isolated Analog Output Module |
| Conversion Type | Digital-to-Analog Converter (DAC) |
| Resolution | 15 bits plus sign |
| Voltage Resolution | 0.320 mV/count |
| Current Resolution | 0.656 mA/count |
| Initial Output Current | 0 mA until module is configured |
| Maximum Overload - Voltage | 30V continuous |
| Maximum Overload - Current | 32 mA continuous, one channel at a time |
| Product Weight | 2 kg |
| Shipping Weight | 3 kg |
Analog Conversion and Resolution
The 1794-OF41 uses a digital-to-analog conversion process to translate controller output data into analog signals. Its 15-bit resolution plus sign provides the specified digital representation for output conversion.
The listed voltage conversion value is 0.320 mV per count, while the current conversion value is 0.656 mA per count. These values describe the output conversion increments and should be considered when evaluating the required signal resolution of the control application.
Output Initialization and Configuration
The output current remains at 0 mA until the module is configured. This behavior is relevant during system commissioning and module initialization, particularly when connected equipment depends on an established analog command signal.
The module configuration should therefore be completed and verified before relying on its analog output for process control. The supplied specifications do not identify the exact configuration sequence or startup behavior for other output conditions.
Overload Protection and Operating Limits
The specified maximum overload limits are 30V continuous for voltage and 32 mA continuous for current, with the current overload condition permitted on one channel at a time.
These limits should be considered when checking connected loads and troubleshooting abnormal output conditions. The 32 mA current overload specification is not a normal operating output rating.
Frequently Asked Questions
Q: What is the resolution of the Allen Bradley 1794-OF41?
A: The 1794-OF41 has a resolution of 15 bits plus sign. Its specified conversion increments are 0.320 mV/count for voltage and 0.656 mA/count for current.
Q: What happens to the output current before the module is configured?
A: The specified output current is 0 mA until the module is configured. The configuration should be verified before using the analog output as a control signal.
Q: What are the maximum overload limits of the 1794-OF41?
A: The specified limits are 30V continuous for voltage and 32 mA continuous for current. The 32 mA current overload condition applies to one channel at a time.
Isolated Analog Output Modules | Allen Bradley 1794-OF41
Isolated Analog Output Modules | Allen Bradley 1794-OF41
The Allen Bradley 1794-OF41 is an isolated analog output module designed to convert digital control data into analog output signals for external devices. It uses a digital-to-analog converter (DAC) with a resolution of 15 bits plus sign. The module provides specified voltage and current conversion values and maintains a zero-current output condition until the module is configured.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1794-OF41 |
| Brand | Allen Bradley |
| Product Type | Isolated Analog Output Module |
| Conversion Type | Digital-to-Analog Converter (DAC) |
| Resolution | 15 bits plus sign |
| Voltage Resolution | 0.320 mV/count |
| Current Resolution | 0.656 mA/count |
| Initial Output Current | 0 mA until module is configured |
| Maximum Overload - Voltage | 30V continuous |
| Maximum Overload - Current | 32 mA continuous, one channel at a time |
| Product Weight | 2 kg |
| Shipping Weight | 3 kg |
Analog Conversion and Resolution
The 1794-OF41 uses a digital-to-analog conversion process to translate controller output data into analog signals. Its 15-bit resolution plus sign provides the specified digital representation for output conversion.
The listed voltage conversion value is 0.320 mV per count, while the current conversion value is 0.656 mA per count. These values describe the output conversion increments and should be considered when evaluating the required signal resolution of the control application.
Output Initialization and Configuration
The output current remains at 0 mA until the module is configured. This behavior is relevant during system commissioning and module initialization, particularly when connected equipment depends on an established analog command signal.
The module configuration should therefore be completed and verified before relying on its analog output for process control. The supplied specifications do not identify the exact configuration sequence or startup behavior for other output conditions.
Overload Protection and Operating Limits
The specified maximum overload limits are 30V continuous for voltage and 32 mA continuous for current, with the current overload condition permitted on one channel at a time.
These limits should be considered when checking connected loads and troubleshooting abnormal output conditions. The 32 mA current overload specification is not a normal operating output rating.
Frequently Asked Questions
Q: What is the resolution of the Allen Bradley 1794-OF41?
A: The 1794-OF41 has a resolution of 15 bits plus sign. Its specified conversion increments are 0.320 mV/count for voltage and 0.656 mA/count for current.
Q: What happens to the output current before the module is configured?
A: The specified output current is 0 mA until the module is configured. The configuration should be verified before using the analog output as a control signal.
Q: What are the maximum overload limits of the 1794-OF41?
A: The specified limits are 30V continuous for voltage and 32 mA continuous for current. The 32 mA current overload condition applies to one channel at a time.
