Fuel System Controller

The FSC-120-B is an upgraded version of the FSC-120 programmable logic controller, with faster processing, quicker reporting, and upgraded I/O. Use a single FSC to control a process, or network up to 10 FSCs for coordinated distributed control.

What’s New in the FSC-120-B

  • Stronger performance: Increased processing speed from 8 MHz to 120 MHz.
  • Better connectivity: Modbus TCP/IP Ethernet and support for standard SD cards.
  • Improved safety: NRTL certified to UL-61010 standard.

Features
Seamless Node Net Operation with existing FSC-120 controllers
Easily Programmed via USB or SD card
Modbus RS-485 and Ethernet Communication

Approved by the Florida DEP.

Advantages
Fully Compatible with Existing FSC and NodeNet Systems
Reduced Field Wiring
View All Data Points from Any Controller
Color Touchscreen HMI & Building Automation System Interface

Used in:
Automatic Fuel Oil Transfer Pump Set
Waterproof Light Oil Pump And Motor Assemblies
Fuel Oil Transfer Pump and Day Tank Set

  • Overview and Features
  • Application
  • Documents
Overview and Features

The FSC-120-B is a general purpose programmable logic controller that can control a single device or process, or be networked with other FSCs for coordinated distributed control of larger systems.

The FSC-120-B is a direct replacement for the original FSC-120 and works seamlessly with existing FSC controllers and NodeNet systems, with no changes to configurations or integrations required.

Each FSC node contains:
24 Digital Inputs
10 Relay Outputs (higher current ratings on the FSC-120-B)
8 Analog Inputs
3 Analog Outputs

Up to ten nodes can be linked on the redundant, isolated, masterless Preferred NodeNet network. Both networks communicate continuously, so if one goes down or a node fails, the rest of the system keeps running with no loss of function. Networking nodes also eliminates the need to run numerous line and low voltage wires between devices or control panels.

Each node can be equipped with a four inch color touchscreen HMI for setup and operator interface.

 

Node Net Operation
Redundant NodeNet ports (A & B) connect up to 10 FSCs wired in parallel. Both cables are always active, carry all data to every node, and are electrically isolated at each node. The FSC-120-B is fully compatible with existing FSC-120 nodes on the same network.

Easy Programmability
Configurations are written through a USB port using FSC Edit software, or loaded from an SD card with no laptop required. The FSC-120-B supports standard SD cards, removing the original 1GB limit.

Address Selection
A 10 position dial sets each FSC’s address. The first FSC is always set to zero (factory default), and addresses must run consecutively without skipping numbers.

Modbus Communication
The FSC sends messages and statuses to the OIT via RS-485 and communicates via Modbus to building automation or energy management systems. The FSC-120-B adds Modbus TCP/IP over Ethernet for a faster, more direct connection to fuel system data.

Application

The most common application of the FSC is to monitor and control emergency generator fuel oil supply pumping and storage systems.

Applications include:

  • Duplex transfer pumping skids
  • Day tank level control
  • Distribution piping Leak Detection
  • Multiple Main Tank motorized selector valve control
  • Main Tank filtration, water separation, and chemical injection
  • Tank truck off-loading pumps
  • Boiler burner oil pumping skids
  • Data center and mission-critical backup fuel systems
  • Remote monitoring and alarming through building automation or energy management systems via Modbus TCP/IP
  • Historical data logging for fuel system events, alarms, and trends

The FSC-120-B can be installed in existing FSC applications as a direct replacement, with no changes to configurations or integrations.

Instruction Manual Scope:
This manual describes the FSC-120 controller hardware.
The application specific control logic is described elsewhere.
The FSC_Draw personal computer based logic creation/editing software is described elsewhere.

Documents

Fuel System Controller (FSC) Specification

Fuel System Controller (FSC) Cutsheet

Fuel System Controller (FSC) Brochure

Fuel System Controller NodeNet Sketch

Fuel System Controller (FSC) Manual

FSC Draw Program