Nuclear Sensors & Process Instrumentation
(Formerly Weed Instrument)

Overview
Introducing NSPI’s latest Multi-Channel Contact Closure models, now more robust than ever and with the latest certifications, including CE; Class I Division 2 Groups A, B, C, D for the US and Canada; and ATEX Zone-2, Category-3.

The EOTec fiber optic Multi-Channel Contact Closure transceiver modules for Safety-Shut Down applications are used to convert up to ten contact closure inputs into fiber optic signals for transmission over a single fiber optic link.  These units are commonly used for remote transmission over long distances (up to 16 miles), transmission through hazardous areas and alarm event triggering.

Applications for this device include long distance transmissions, lightning prone areas, transmissions through hazardous areas and Safety-Shut Down applications.

Cost effective signal multiplexing without a PLC!
Each transceiver module includes two contact closure inputs and is capable of driving up to ten inputs by cascading additional dual channel input modules.  A de-pluggable screw terminal on the bottom of the module is provided for connection to the input signal.  An integrated backplane allows for communications between modules with no external inter-modular connection.

Flexible design for greater output driving capacity.
Each transceiver has a single optical port for use with multi-mode or single mode optical fiber with transmissions at 850 nm or 1300 nm using industrialized ST/SMA connectors.  SPDT Form C relay outputs are provided for each channel capable of driving resistive loads with a maximum switching power of 120W, 250VA, and maximum switching current of 4A DC, AC.

Features of Ultra Electronics, NSPI modular Multi-Channel Contact Closure (MCCC)

• Suitable for critical Safety Shut-Down applications
• Transmits from 1 to 10 Contact Closure signals over one fiber
• Compatible with multi-mode or single mode optical fiber
• De-pluggable screw terminals for all wire connections
• Integrated backplane with no external inter-modular connections
• Visible status LED’s for power, TX/RX and channel inputs
• Fail-Safe relay operation
• Accepts our standard power supplies
• Available with dual redundant, hot swappable power supplies
• Suitable for mounting on standard 35 mm DIN rail
• Operating range of –40 °C to 85 °C, 0-95% RH (non-condensing)
• Dimensions (each module): 22.5 mm w x 99 mm h x 114 mm d

Regulatory certifications

• CE
• Class I, Division 2, Groups A, B, C, D for the US and Canada
• ATEX, Zone-2, Category-3

MCCC Fiber Optic Transmitters:

MCCC Fiber Optic Receivers:

MCCC Input/Output Modules:

MCCC sower supply options:

Application diagram:

Overview
The EOTec 2000 fiber optic Multi-Channel Contact Closure transceiver modules for Safety-Shut Down applications are used to convert up to ten contact closure inputs into fiber optic signals for transmission over a single fiber optic link.  These units are commonly used for remote transmission over long distances (up to 16 miles), transmission through hazardous areas and alarm event triggering.

Applications for this device include long distance transmissions, lightning prone areas, transmissions through hazardous areas and Safety-Shut Down applications.

Cost Effective Signal Multiplexing without a PLC!
Each transceiver module includes two contact closure inputs and is capable of driving up to ten inputs by cascading additional dual channel input modules.  A de-pluggable screw terminal on the bottom of the module is provided for connection to the input signal.  An integrated backplane allows for communications between modules with no external inter-modular connection.

Flexible design for greater output driving capacity.
Each transceiver has a single optical port for use with multi-mode or single mode optical fiber with transmissions at 850 nm or 1300 nm using industrialized ST/SMA connectors.  SPDT Form C relay outputs are provided for each channel capable of driving resistive loads with a maximum switching power of 120W, 250VA, and maximum switching current of 4A DC, AC.

Features of Ultra Electronics, NSPI modular Multi-Channel Contact Closure (MCCC)

• Suitable for critical Safety Shut-Down applications
• Transmits from 1 to 10 Contact Closure signals over one fiber
• Compatible with multi-mode or single mode optical fiber
• De-pluggable screw terminals for all wire connections
• Integrated backplane with no external inter-modular connections
• Visible status LED’s for power, TX/RX and channel inputs
• Fail-Safe relay operation
• Accepts our standard power supplies
• Available with dual redundant, hot swappable power supplies
• Suitable for mounting on standard 35 mm DIN rail
• Operating range of –40 °C to 85 °C, 0-90% RH (non-condensing)
• Dimensions (each module): 22.5 mm w x 99 mm h x 114 mm d

Selection Guide:

MCCC Fiber Optic Transmitters:

MCCC Fiber Optic Receivers:

MCCC Input/Output Modules:

MCCC Power Supply options:

Cost effective small package
The FOT-CC fiber optic transmitter and FOR-CC fiber optic receiver are deigned to transmit contact closure data over long distances. The FOT-CC transmitter provides a closed contact signal to the FOR-CC receiver, which activates a single pole double throw (SPDT) relay. They provide ground loop isolation and can be used with 50/125 to 200/230 µm fiber optic cable. The DIN-Rail housings of theses modules facilitate quick and easy mounting on industry standard hardware.

Applications
Remote switch monitoring
Remote relay / solenoid operation

Features and Benefits:

• Transmission distances up to 5000 meters (16,400 ft.)
• Compact DIN-Rail mounting
• Dry contact input from devices such as push buttons, limit switches and relays
• Form-C relay output (UL/CSA 0.6A/125Vac 2A/30Vdc)
• Compatible with ST Fiber Terminations
• 24 Vdc powered, matching 115/230Vac power supply available

Selection guide

Theory of operation:
The following chart indicates how the output relay contacts will operate on the FOR-CC provided the input contacts on the FOT-CC are wired such that they are closed in a normal operating state and open in a failure mode: