Key Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | DNC 115 (05-011-115) |
| Manufacturer | SIGMATEK |
| Product Type | Process Redundant I/O / Bus Module |
| System Compatibility | DIAS Distributed Automation System |
| Operating Voltage | 12V DC |
| Working Pressure Range | 0 to 60 KN |
| Output Type / Accuracy | Pressure Output, 1% Precision |
| Redundancy Level | Dual Redundant Input/Output Channels |
| Fault Tolerance | Automatic Fault Switching / Hot Standby |
| Communication Interface | Ethernet, Profibus, Profinet |
| Connection Type | High-Reliability Plug-in / Metal Connectors |
| Monitoring | Real-Time Channel Status & Alarm Notification |
Product Introduction
When you are running a high-speed packaging line or a critical press, a single dead I/O channel can mean thousands of dollars in scrapped product. The SIGMATEK DNC 115 is the DIAS system’s answer to that nightmare. It is a process redundant I/O module designed to sit in the bus and silently duplicate critical signals. If the primary channel shorts out or fails, this board automatically switches to the backup channel without dropping the cycle.Engineers specify this exact module because it removes the single point of failure from the field wiring. With its 1% precision and 0-60KN pressure handling, it is typically the brains behind heavy hydraulic or pneumatic press controls. It communicates seamlessly with the main DIAS controller over Profibus or Profinet. Just be warned: redundant modules demand pristine wiring. If you have a short in both channels, no amount of silicon magic will save your uptime.
Quality SOP & Tech Pitfalls
Before this module leaves our facility, it undergoes a rigorous validation protocol. We start with a visual inspection of the metal connectors and plug-in terminals to ensure zero corrosion. Next, it gets mounted in a DIAS test rack where we simulate a primary channel failure to verify the automatic fault switching triggers instantly. We use a Fluke 115 to check the 12V power draw and validate the 1% output accuracy under load. Finally, we log the firmware and seal it in an anti-static bag.Now for the reality check: I once watched a maintenance tech replace a perfectly good DNC 115 because he thought it was broken, only to find out he had pinched the redundant cable inside the cable carrier. The module was working perfectly; the wiring was garbage. Another common pitfall is ignoring the real-time monitoring alarms. The module will tell you if a backup channel is degraded before it is needed. If you bypass those warnings, you are flying blind.
Installation & Configuration Guide
- Pre-Installation: ⚠️ Safety First. Ensure the DIAS bus power is OFF and wait 60 seconds for capacitors to discharge. Take a clear photo of the existing DNC 115 module and the redundant wiring terminations before touching anything.
- Removal: Label the primary and secondary channel cables. Release the metal locking clips safely. Never pry the module with a screwdriver, or you will damage the high-reliability connectors.
- Installation: Copy DIP/Jumper settings exactly. This prevents 90% of startup communication failures. Align the new DNC 115 module with the DIAS backplane guides and push firmly until the locking tabs snap into place.
- Power-On & Testing: Restore 12V DC bus power. Watch the front panel: the OK LED should turn solid green. Open your DIAS configuration software, verify the Profinet/Profibus link is active, and confirm that both redundant channels are reporting healthy status before resuming production.
Compatible Replacement Models
| Replacement Model | Compatibility Tier | Field Notes |
|---|---|---|
| DNC 115 (05-011-115) | ✅ Drop-in Replacement | The exact process redundant I/O module for DIAS systems. |
| DNC 031 (00187512) | ⚠️ Software Compatible | Alternative DIAS bus module. Verify I/O channel mapping in software before swapping. |
| DNC 305 (00187514) | ⚠️ Software Compatible | Alternative DIAS bus module. Requires checking logic configuration. |
| DDI 161 (00187545) | ❌ Hardware Mod Required | Standard digital input module. Lacks redundancy; do not use as a direct replacement for a redundant I/O point. |
Frequently Asked Questions (FAQ)
Can I hot-swap this redundant module if the machine is running?
Generally, no. While DIAS supports high availability, pulling a redundant I/O module while energized can cause a momentary bus fault. Always schedule this swap during a planned micro-stop or maintenance window.Why is the system reporting a redundant channel fault after I installed this board?
That usually means the backup channel wiring is open or shorted. The DNC 115 constantly monitors both channels. Check your secondary field wiring and verify the termination at the plug-in connector.Does this module handle the actual safety E-Stop relays?
No. The DNC 115 is for process redundancy to maintain production uptime. Safety-critical E-Stops must be handled by dedicated, certified safety I/O modules.I need to replace this board, but my old one is DNC 031. Will the DNC 115 work?
They are both DIAS bus modules, but you must verify the exact I/O mapping. Check your DIAS hardware manual to ensure the 0-60KN pressure scaling and channel assignments match your specific application before dropping it in.Do I need to recalibrate the pressure inputs after swapping the board?
Usually no, if it is a direct drop-in replacement. However, if your press force readings look off, you should verify the 1% scaling in the DIAS configuration software and perform a loop check with a calibrated pressure source.Where does the power for this module come from?
It requires a stable 12V DC supply distributed through the DIAS backplane. If the board is completely dead, check the backplane power distribution and the upstream power supply first.
