Description
Yokogawa SDV144-S13 Digital Input Module
Configured for discrete signal acquisition in field input interfacing within Yokogawa DCS I/O subsystems, the Yokogawa SDV144-S13 (SDV144 Digital Input Module) provides direct physical/electrical execution for 16-channel no-voltage contact input monitoring.
Suffix Breakdown & Model Matrix
Model SDV144-S13 is a fixed configuration variant of the SDV144 digital input module family.
No additional functional suffix segmentation data is provided beyond S13 hardware identification code.
Electrical and channel architecture is defined at base model level.
Hardware Specifications
| Parameter |
Specification |
| Model Brand |
Yokogawa |
| Origin |
Japan |
| Weight |
Approx. 0.36 kg (terminal block type), 0.41 kg (with signal cable adapter) |
| Power Consumption |
290 mA max (5 VDC), 140 mA max (24 VDC) |
| Input Channels |
16-channel isolated digital inputs |
| Input Type |
No-voltage contact |
| ON Resistance |
1 kOhm max |
| OFF Resistance |
100 kOhm min |
| External Supply |
24 VDC +20% / -10% |
| Input Voltage Limit |
30 VDC instantaneous max |
| Input Response Time |
40 ms max |
| Withstand Voltage |
2 kVAC (1 minute, channel collectively connected) |
Yokogawa Channel-to-Channel Isolation Architecture
The SDV144-S13 implements isolated input channel architecture consistent with Yokogawa process I/O design philosophy. Each input channel is electrically decoupled to reduce cross-channel interference under mixed contact signal conditions. The input stage supports 24 VDC loop excitation via external supply, enabling stable detection of dry contact states under industrial noise environments. Isolation design minimizes signal coupling across dense I/O backplane configurations in distributed control systems, maintaining deterministic state acquisition behavior during simultaneous switching events.
Frequently Asked Questions
Q: Can the SDV144-S13 module support hot-swapping in an energized rack?
A: The module is designed for installation in Yokogawa I/O racks; hot-swap capability depends on system rack type and backplane implementation. Electrical isolation does not imply live insertion support.
Q: What is the significance of 40 ms input response time?
A: The 40 ms maximum response defines the signal filtering and debounce window for contact state recognition, limiting false transitions in mechanical switch inputs.
Q: Does each channel require independent external power?
A: No. The module uses a shared 24 VDC external supply for all input channels with common current capacity limitation of 200 mA.
Field Installation Guidelines
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Ensure 24 VDC supply remains within +20% / -10% tolerance before energizing module.
-
Maintain shield termination at designated grounding point to reduce induced noise on dry contact lines.
-
Use twisted pair wiring for long-distance input runs to minimize electromagnetic coupling.
-
Verify that no-voltage contact resistance meets ON/OFF thresholds prior to commissioning.
-
Avoid routing input cables parallel to high-voltage or high-frequency drive lines.
-
Tighten pressure clamp terminals according to Yokogawa rack mechanical specification to ensure stable contact integrity.
