Honeywell MTL4599N MTL4500 Feed-Through Isolation Modules
Manufacturer: Honeywell
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Part Number: MTL4599N
Condition：New with Original Package
Product Type: Isolation Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Honeywell MTL4599N General-Purpose Feed-Through Module
Configured for routing unused or non-IS signals in processing networks, the Honeywell MTL4599N (Honeywell MTL4599N General-Purpose Feed-Through Module) provides direct physical/electrical execution. The hardware establishes connection routing between internal wiring architectures and multiway backplane assemblies without active signal alteration. It functions primarily as a termination component to maintain structural integrity across instrumentation panels and ensures defined physical separation between distinct voltage loops.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | MTL4599N |
| Brand | Honeywell |
| Origin | UK (Honeywell / Eaton Crouse-Hinds MTL Production Facilities) |
| Weight | 0.6 kg |
| Dimensions | Standard MTL4500 series form factor |
| Operating Temp | -20 deg C to +70 deg C |
| Power Consumption | 24 VDC +/-10% (Required for indicator functions only; 0 W for basic routing) |
| Isolation | 2 kV RMS isolation between input and output |
| Max Signal Rating | 50 V or 0.25 A maximum |
| Max Current Capacity | 500 mA typical |
| Terminal Interface | 6 screw terminals linked to multiway backplane connector |
| Supported Signals | General-purpose analog or digital instrumentation signals |
| Mounting | DIN-rail or backplane installation |
| Compliance | IEC/EN 61508 SIL2 suitable |
Loop Protocol Integration and Channel Isolation
The hardware architecture interfaces with standard instrumentation setups to maintain discrete signal paths prior to downstream distributed control system (DCS) processing. While executing basic feed-through routing for 4-20 mA HART loop protocol architectures or digital lines, the unit enforces a galvanic 2 kV RMS channel-to-channel isolation boundary between adjacent paths and multiway backplane points. This high-potential barrier prevents parasitic ground loop voltages from damaging parallel logic networks and protects sensitive DCS analog I/O structures from common-mode electrical spikes.
Frequently Asked Questions
Q: Can the MTL4599N be utilized to isolate intrinsically safe (IS) signals within hazardous locations?
A: No. The internal wiring passes electrical signals directly across the backplane interface without active energy-limiting barriers, making it unsuitable for circuits requiring intrinsic safety certification.
Q: Does the module contain internal sub-assemblies for transient voltage or surge protection?
A: No. The internal circuit lacks suppressors or metal-oxide varistors (MOVs), meaning that engineers must install external surge protective devices on the line if the field environment presents transient risk.
Q: What are the specific power supply prerequisites for baseline signal feed-through operations?
A: Passive signal routing requires 0 mA from the backplane; the 24 VDC +/-10% electrical supply line is only necessary if the specific module variation incorporates optional visual status indicators.
Field Installation Guidelines
- Confirm the maximum loop voltage does not exceed 50 V and the sustained current stays below 0.25 A before applying signal loads to the terminal blocks.
- Mount the module vertically onto standard DIN rails or compatible MTL4500/MTL5500 backplane slots, checking that the multiway connector pins seat completely into the mating baseplate.
- Strip field conductors to the manufacturer-specified length and secure them into the 6 screw terminals using a calibrated torque screwdriver to prevent high-resistance contact points.
- Separate the non-IS field wiring routed through this module from any adjacent intrinsically safe cables by a minimum physical distance of 50 mm or via an approved insulation barrier.