Description
Core Product Summary
The AutomationDirect F4-16DA-1 is a 16-channel analog current output module for the DirectLOGIC DL405 programmable logic controller (PLC) system. It provides 4–20 mA output signals with 12-bit resolution for control systems that require multiple analog command channels.
The module uses sinking-type current outputs and requires an external 24 VDC user power supply. Its removable terminal block simplifies module replacement without disconnecting each field wire from the block. The F4-16DA-1 is designed for existing DL405 installations; system compatibility, available I/O points, and power-budget limits should be checked before adding or replacing the module.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | AutomationDirect |
| Product family | DirectLOGIC DL405 |
| Model | F4-16DA-1 |
| Module type | Analog output |
| Number of output channels | 16 |
| Output signal | 4–20 mA |
| Output resolution | 12-bit |
| Output configuration | Sinking current |
| Output isolation | Channels are not isolated |
| External power requirement | 24 VDC user-supplied power |
| PLC I/O allocation | 32 discrete output points |
| Terminal block | Removable |
| Programming software | DirectSOFT version 4.0 or later, per product cut sheet |
| System placement | DL405 system slots, including supported remote bases |
| Agency listing | UL Listed, file E139594 |
| CE marking | Not listed on the product cut sheet |
| RoHS status | Listed as non-compliant on the product cut sheet |
Engineering Selection Highlights
Sixteen independent analog command channels
The F4-16DA-1 supports 16 single-ended current outputs, making it suitable for DL405 applications that require multiple analog setpoints from one PLC module. Each channel can be updated through the CPU’s output data and channel-selection logic.
bit output resolution
The module uses 12-bit digital-to-analog conversion, with a nominal representation of 1 part in 4,095. The manual specifies maximum inaccuracy of ±0.2% at 25°C and ±0.4% over 0°C to 60°C.
Sinking-current output architecture
The module sinks 4–20 mA from an external supply rather than acting as a sourcing current output. Field devices and loop wiring must therefore be compatible with this arrangement. Do not substitute a sourcing-output module without reviewing the circuit design.
Removable field-wiring connector
The removable terminal block allows the module to be removed without individually disconnecting the field wires from the connector. This can simplify maintenance and replacement, provided the system is safely isolated and the replacement configuration has been verified.
Legacy-system support
AutomationDirect identifies the DL405 range as a legacy PLC series supported for existing installations and recommends considering newer PLC families for new applications. The F4-16DA-1 is therefore most relevant when maintaining, expanding, or replacing hardware in a compatible installed DL405 system.
F4-16DA-1
F4-16DA-1
System Compatibility & Integration Requirements
Before installing or replacing the F4-16DA-1, verify the following system-level requirements:
- PLC platform: Confirm that the installed system is a compatible DirectLOGIC DL405 configuration.
- CPU and programming: The product cut sheet specifies DirectSOFT version 4.0 or later. CPU-specific programming behavior must be checked against the applicable DL405 documentation.
- Discrete output allocation: The module consumes 32 discrete output points for channel selection, output data, and enable control.
- Base power budget: Allow for the module’s 5 VDC base current requirement of 90 mA.
- External supply: Provide a Class 2 field-side supply rated 21.6–26.4 VDC at 100 mA for the module supply. Add the required current for the active loops.
- Loop supply: The manual specifies 18–48 VDC for current loops, subject to the permitted load-resistance range.
- Load compatibility: Check the connected device’s input impedance and the loop supply voltage before wiring.
- CPU scan behavior: Output updates depend on the CPU and program instructions. The manual describes special update capabilities for DL440 and DL450 CPUs.
- Output common: The module has one non-isolated output common. Do not treat its 16 channels as galvanically isolated from one another.
Isolation clarification: The manual describes optical isolation between the analog outputs and PLC logic components. This is distinct from channel-to-channel isolation, which is not provided.
Dimensions, Mounting & Connection Notes
The F4-16DA-1 uses a removable field-wiring connector. The manufacturer’s product page provides a model-specific 2D drawing for mechanical layout and replacement planning.
Important wiring considerations include:
- Confirm the module’s position in the DL405 base and the CPU’s I/O addressing requirements.
- Connect the specified external 24 VDC module supply and verify its common reference.
- Confirm that each loop supply is within the permitted voltage and load range.
- Leave unused current outputs unconnected, as specified in the manual.
- Use shielded signal wiring where appropriate and ground the shield at the module or supply return—not at both the module and the transducer.
- Route analog signal wiring away from large motors, high-current switching devices, and transformers to reduce electrical noise.
- Check the total base and field-supply power budgets before enabling all intended channels.
For cabinet drawings and dimensional clearances, use the official F4-16DA-1 mechanical drawing rather than dimensions from a visually similar DL405 module.
Detailed Product Overview
Role in the DL405 control system
The F4-16DA-1 converts PLC output data into 4–20 mA analog signals. The CPU program determines the values to be sent and selects the output channels through the module’s allocated discrete output points.
The 16 channels are organized as two banks of eight. The manual describes a typical update sequence that updates one channel in each bank per CPU scan, allowing all 16 channels to be updated over eight scans. DL440 and DL450 CPUs support immediate instructions that can update all 16 channels in the same scan.
This behavior matters when replacing a module in a process where analog output update timing is important. Confirm the CPU model, program instructions, and required response time rather than assuming all DL405 CPUs update the channels identically.
Current-loop and load requirements
The output range is 4–20 mA, and the outputs sink current from an external supply. The allowable load resistance depends on the loop supply voltage. The manual lists these ranges:
| Loop supply voltage | Permitted external load resistance |
|---|---|
| 18 VDC | 0–480 Ω |
| 24 VDC | 220–740 Ω |
| 48 VDC | 1,550–1,760 Ω |
The selected supply and load must meet the manufacturer’s requirements. A load that falls outside the specified range can prevent the loop from operating correctly.
Accuracy and environmental limits
The module’s 12-bit resolution supports analog setpoint generation, but resolution and accuracy are not the same specification. The manual gives a maximum inaccuracy of ±0.2% at 25°C and ±0.4% across the 0°C to 60°C operating range.
The published storage-temperature range is −20°C to +70°C, and the specified relative humidity is 5–95% non-condensing. The manual also excludes corrosive gases from the operating environment.
Maintenance and replacement checks
When replacing an F4-16DA-1, verify the exact model, base compatibility, CPU type, output addressing, power supply, loop polarity, load impedance, and program configuration. If the original system uses a shared field supply, check that its capacity remains sufficient for the number of active loops.
After replacement, test each required output channel against its commanded value and verify the response of the connected field device. Where output signals participate in process or equipment protection functions, complete the site’s required commissioning and functional checks before returning the system to service.
Applications & System Role
The F4-16DA-1 supplies analog current commands from a DL405 PLC to compatible field devices. It is intended for control systems where the receiving equipment accepts a 4–20 mA command signal and the current-loop wiring matches the module’s sinking-output design.
Typical control functions include:
- Valve and actuator positioning: Sending current setpoints to compatible positioners or actuators.
- Drive and equipment references: Providing analog command signals to devices with compatible 4–20 mA inputs.
- Process setpoint transmission: Converting PLC-generated digital values into analog current commands for compatible process equipment.
- Multi-loop control panels: Consolidating up to 16 analog command channels in a single DL405 module.
- Legacy equipment maintenance: Replacing an existing F4-16DA-1 where the installed PLC architecture and field wiring remain compatible.
Actual application suitability depends on the receiving device’s electrical specifications, loop power arrangement, required update rate, and control-system design.
Frequently Asked Questions
What is the AutomationDirect F4-16DA-1?
It is a 16-channel, 12-bit analog current output module for the DirectLOGIC DL405 PLC family. It provides 4–20 mA sinking-current outputs.
How many output channels does it have?
It has 16 single-ended current output channels sharing one non-isolated output common.
Does the F4-16DA-1 require an external power supply?
Yes. The module requires an external field-side 24 VDC supply. The manual specifies 21.6–26.4 VDC at 100 mA for the module supply, plus additional current for the active current loops.
Is the module compatible with every DL405 CPU?
The module is designed for the DL405 system, but installation and programming requirements can vary by CPU. In particular, output-update behavior and addressing considerations should be verified against the installed CPU and its programming documentation.
Are the 16 output channels isolated from one another?
No. The module has one non-isolated output common. The manual describes optical isolation between the analog outputs and PLC logic components, which is different from isolation between individual channels.
What output signal does it provide?
The output range is 4–20 mA. Connected field devices must support that signal range and be compatible with the module’s sinking-current configuration.
What is the output resolution?
The module uses 12-bit resolution, specified as 1 in 4,095.
Can the module be installed in a remote base?
The DL405 analog module manual states that the F4-16DA-1 can be installed in any DL405 system slot, including remote bases, subject to system power-budget and I/O-point limitations.
Which programming software is specified?
The product cut sheet lists DirectSOFT version 4.0 or later. Verify the installed CPU and software environment before modifying an existing program.
Is the F4-16DA-1 recommended for new PLC projects?
AutomationDirect identifies DL405 as a legacy series intended for existing installations and suggests considering newer PLC families for new applications. The F4-16DA-1 is primarily relevant to maintaining or extending a compatible DL405 system.
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