General
Fibre optic connector	ST
Auto-negotiation
Auto-MDI/MDI-X
DIN rail mounting
Overcurrent protection

The Moxa PTC-101-S-ST-LV is an industrial Ethernet-to-fiber media converter, specifically designed for use in demanding environments such as power substations, railway technology, or industrial control systems. The device enables the conversion of 10/100BaseT(X) Ethernet signals into 100BaseFX fiber signals, ensuring reliable data transmission over long distances and in harsh environments. Compliance with the IEC 61850-3 standard ensures that the device meets stringent requirements for temperature, shock resistance, electromagnetic compatibility, and long-term stability, as required in critical infrastructures.

Applications

The PTC-101-S-ST-LV is designed for use in industrial networks where high mechanical and electrical robustness, as well as long service life, are required. Typical application scenarios include networking of control and monitoring systems in power supply facilities, rail vehicles, or production plants, where copper cable connections are replaced with fiber optic cables to compensate for interference, EMI, and longer transmission distances. The DIN rail mounting allows for easy integration into existing enclosures.

Features and Equipment in Detail

The device features an RJ45 interface for 10/100BaseT(X) Ethernet and a fiber optic interface in the format of ST connector for 100BaseFX. Support for Auto-Negotiation and Auto-MDI/MDI-X ensures automatic adaptation to the network configuration, simplifying installation. The Link Fault Pass-Through (LFPT) function transmits the fiber link status to the Ethernet interface, enabling network management systems to detect faults directly.

Technology Explained Simply

Fiber optic transmission operates in either multimode or singlemode, with the PTC-101-S-ST-LV model equipped for singlemode operation at a wavelength of 1310 nm. The typical transmission range reaches up to 40 km, suitable for long distances in industrial facilities. The TX power ranges from 0 to -5 dBm, and the RX sensitivity is -34 dBm, ensuring high signal quality even at low power levels. The link budget of 29 dB allows for flexible network topology planning, accounting for losses from cables, connections, and splitters.

Compatibility and Accessories

The device is equipped with an integrated power supply with galvanic isolation, ensuring electrical isolation between the network and power supply. The LV models offer redundant inputs for 20–72 VDC, enabling higher availability through backup power supply. An integrated relay output is also included, which activates in case of power failure to inform external systems. The power supply includes overcurrent protection to safeguard the device from damage.

Mounting and Installation

Mounting is done via a DIN rail, enabling quick and secure installation in enclosures. The housing is made of metal and designed for use in harsh environments. Dimensions are 152.15 mm (W) × 126.46 mm (H) × 66.65 mm (D), and the device weighs 785 g. The operating temperature ranges from -40 to +85 °C, enabling use in extreme climatic conditions. Humidity levels between 5 and 95 % are permitted, provided no condensation occurs.

Operational Advantages

IEC 61850-3 compliance ensures high reliability and stability in critical applications. The MTBF of 4,660,534 hours (according to Telcordia SR332) demonstrates the device’s long service life. Redundant power supply in LV models and the relay output for power failure monitoring increase system availability. The integrated galvanic isolation protects the network from electrical disturbances. DIN rail mounting and robust construction simplify installation and maintenance in industrial environments.

Scope of Delivery

The scope of delivery includes 1 x PTC-101 media converter, 1 x quick start guide, and 1 x warranty card.