Yokogawa A2SAM505-H000 S1 Current/Voltage Output Adaptor Configured for analog current and voltage signal generation in the CENTUM VP N-IO network,...
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Configured for analog current and voltage signal generation in the CENTUM VP N-IO network, the Yokogawa A2SAM505-H000 S1 (A2SAM505 Current/Voltage Output Adaptor) provides direct physical and electrical execution of isolated analog output functions. The adaptor interfaces with N-IO modules and converts internal control commands into configurable 0-10 VDC or 4-20 mA output signals while maintaining galvanic isolation between field circuits and the control system.
Suffix Breakdown & Model Matrix
Code Element
Description
A2SAM505
Current/Voltage Output Adaptor
-H
Standard type, no explosion protection
000
Basic specification code
S1
Hardware style revision 1
Hardware Specifications
Parameter
Specification
Model
A2SAM505-H000 S1
Brand
Yokogawa
Product Type
Current/Voltage Output Adaptor
System Compatibility
CENTUM VP N-IO System
Output Signal (Voltage)
0-10 VDC
Output Signal (Current)
4-20 mA
Maximum Voltage Output Range
-0.3 to 10.3 VDC
Maximum Current Output Range
1-23 mA
Load Resistance (Voltage)
>= 10 kOhm
Load Resistance (Current)
0-750 Ohm at 20 mA; 0-600 Ohm at 23 mA
Output Resistance
<= 1 Ohm
Current Limitation
<= 23 mA
Voltage Output Current Limit
<= 15 mA
Open Loop Detection
<= 0.65 mA trigger threshold
Data Update Period
2 ms adaptor; up to 10 ms through N-IO module
Isolation (Output to System)
1500 VAC for 1 minute; 42 VDC continuous
Isolation (Adjacent Adaptors)
500 VAC for 1 minute; 42 VDC continuous
Power Consumption (24 VDC Supply)
38 mA maximum
Power Consumption (5 VDC Internal Supply)
10 mA maximum
Dimensions
Approx. 13.0 x 1.5 x 4.0 cm
Weight
Typical 0.072 kg; <= 0.10 kg
Operating Temp
-40 degC to +70 degC
Mounting Method
A2BN3D Adaptor Base Plate
Channel Isolation and HART Output Integration
The A2SAM505 supports isolated analog output operation with channel-level galvanic separation between field-side wiring and the N-IO control domain. For current output operation, the adaptor supports HART 7 communication superimposed on the 4-20 mA loop, allowing simultaneous analog signal transmission and digital device communication. Open-loop monitoring is available during current output operation and activates when loop current falls to 0.65 mA or below.
Frequently Asked Questions
Q: Does the A2SAM505 require hardware jumpers to change between voltage and current output modes? A: No. Output mode selection between 0-10 VDC and 4-20 mA is performed through system software configuration.
Q: Can the adaptor be replaced while the N-IO system remains energized? A: The module is designed for hot-swappable operation when installed on the designated A2BN3D adaptor base plate and used according to Yokogawa maintenance procedures.
Q: What output load limitations apply to current mode operation? A: The adaptor supports loads up to 750 Ohm at 20 mA output and up to 600 Ohm at 23 mA output while maintaining specified operating limits.
Field Installation Guidelines
Mount the adaptor only on a compatible A2BN3D adaptor base plate.
Verify field wiring polarity before energizing output circuits.
Separate analog output cabling from high-energy power conductors to reduce conducted interference.
Connect cable shields according to plant grounding standards and DCS cabinet grounding practices.
Confirm field device loop resistance remains within the specified operating range before commissioning.
Perform output verification using calibrated measurement equipment after installation or replacement.
When HART communication is required, ensure loop components and field devices support HART-compatible operation.
