Description
The Det-Tronics EQ3730DW (part number 009174-003) is an 8-channel Enhanced Discrete Input/Output (EDIO) expansion module engineered exclusively for the Eagle Quantum Premier (EQP) safety system network. Housed in a rugged aluminum enclosure, this module expands system capacity by interfacing field fire and gas devices with the central EQP controller over a fault-tolerant, transformer-isolated Signaling Line Circuit (SLC) Local Operating Network (LON). Each of its eight channels is independently software-configurable to function as an initiating input circuit or a control output circuit, providing tailored life safety monitoring and suppression deployment.
Commercial Availability & Procurement Terms
- Condition: New Original (Factory Sealed OEM Stock)
- Warranty: 12-Month Functional Warranty
- Availability: In Stock
- Standard Lead Time: Ships within 1–2 business days via global couriers (DHL, FedEx, UPS)
- Pricing Policy: Indicative pricing only. Final transaction costs depend on specialized system certifications and current component allocation baselines. Contact our sales department for a formal, time-bound quote.
Technical Specifications
| Parameter | Specification / Value |
| Model Number | EQ3730DW |
| Part Number | 009174-003 |
| System Architecture | Det-Tronics Eagle Quantum Premier (EQP) Network |
| Channel Count | 8 independent, software-configurable channels |
| Input Voltage Range | 18 to 30 V DC (21 V DC minimum required for Deluge/Pre-action apps) |
| Power Consumption | 3 W nominal, 11 W maximum |
| Maximum Input Current | 10.4 A maximum total module input current |
| SLC Communication | Digital, transformer-isolated LON bus (78.5 kbps) |
| Supported Wiring Layouts | Class B (Style 4) standard; Class A (Style 6/7) requires pairing 2 channels |
| Supervised Output Capacity | 2 A continuous at 30 V DC per channel |
| Unsupervised Output Rating | Form A normally off dry contact; 2 A at 30 V DC max |
| Response Time | Output actuates in < 0.15 seconds from command receipt |
| Operating Temperature | −40 to +85 °C (−40 to +185 °F) |
| Hazardous Area Ratings | Class I, Division 2, Groups A, B, C, D (T4); Class I, Zone 2, Group IIC (T4) |
| Safety Certifications | SIL 2 Capable, FM, CSA, ATEX, IECEx, CE, DNV-GL |
Deployment Constraints & Engineering Notes
1. High-Current Parallel Power Hookup
The total module power terminal blocks are rated for a maximum throughput of 10 A.
- Wiring Rule: If your combined channel load currents (e.g., driving multiple heavy notification appliances or releasing solenoids concurrently) exceed 10 A, you must connect both sets of module input terminals in parallel using a secondary 24 V DC power feed layout to distribute the heavy load across the internal copper tracking safely.
2. Resistor Threshold Rules for Supervised Inputs
When configuring a channel as a supervised Initiating Device Circuit (IDC), exact resistor tolerances must be monitored to prevent false open- or short-circuit troubleshooting alarms on the central EQP panel:
- End-of-Line (EOL) Resistor: 10 kΩ nominal
- In-Line Resistor: 3.3 kΩ nominal
- Active/Alarm State Zone Window: 2.5 kΩ to 5.0 kΩ
- Open Circuit State Detection: > 45 kΩ
- Short Circuit State Detection: < 250 Ω
3. Deluge and Pre-Action Voltage Minimums
While the module can process baseline logic down to 18 V DC, special rules apply during high-consequence agent suppression deployments.
Field Warning: For deluge and pre-action gas/water release systems, incoming primary power at terminals 1 and 2 must stay above a hard minimum of 21 V DC. If voltage sags below 21 V DC during a discharge cycle, the module may lack the inductive drive capacity required to actuate connected mechanical release valves.
Frequently Asked Questions
Can the EQ3730DW support conventional two-wire smoke detectors?
Yes. Unlike standard digital I/O cards, individual channels on the EQ3730DW can be software-configured to power and monitor up to 15 conventional two-wire smoke or heat devices per channel. It includes the required integrated circuitry to reset latched smoke zones directly through software control without requiring external relay bases.
What is the advantage of the EQ3730DW over legacy EQ3730 models?
The “W” designation implies specific internal hardware modifications and code updates aligned with current FM/CSA hazardous area approvals and SIL 2 safety system architectures. Always back up your current EQP system configuration via Safety System Software (S3) before swapping older modules to ensure firmware compliance across the LON loop.
How do I configure a Class A output loop on this module?
A single channel cannot perform Class A execution on its own. To deploy a Class A (Style 6/7) supervised input or notification output circuit, you must allocate and link two adjacent physical channels inside the S3 software utility, dedicating one channel to the outbound run and the second to the return leg.
