Brochure

20 • FIREYE PRIMELINE PRODUCTS
NEXUS NX6100 INTEGRATED BURNER CONTROLER Bulletin NEX-6100
The Fireye NEXUS NX6100 Integrated Controller is a microprocessor based, Flame
Safeguard and Parallel Positioning Combustion Controller built into one compact,
user configurable package. The system consists of the Controller, Display, Temper-
ature / Pressure Sensors, Servo-Motors and optional Comfire Software.
The Flame Safeguard portion of the control package provides burner sequencing
including safe start check, proof of main valve closure, selectable main gas safety
proving sequence, supervised pre-purge, low fire starting position, pilot and main
trials for ignition, main flame supervision, and post purge. Safety event timings are
provided to meet North American and CE Standards. Time proven Fireye Flame
Scanners and amplification circuits using UV, UV-Self Check and Infrared sensors,
provide fast reliable scanning of most commonly burned fuels. For exotic fuels and
applications, the NX6100 is also compatible with Fireye Phoenix and InSight inte-
grated Flame Scanners. Seven low voltage and two line voltage user defined auxiliary inputs provide supervision of safety critical and non-
safety critical inputs. A large menu of alarm messages provides enhanced diagnostics.
Control of up to four profiles using an independent Servo-Motor for each controlled element allows precise positioning, accurate to 0.1°, of
the fuel and air metering devices over the burner's firing range. Each profile can be defined to include up to 10 servomotors. Profiles can
be configured to share common fuel servomotors or as independent (one profile per fuel) and are not limited by fuel. Up to 24 positions per
profile including: Closed, Purge, Ignition (Preferred Start), Low Fire and an additional 20 intermediate points from low to high fire. Each
individual servomotor's position and speed are verified and lockout will occur should either of these parameters be exceeded. All servomo-
tors are controlled via secure CANbus communications link.
Modulation control is provided via the pressure/temperature sensor's input. The Fireye NX1020, NX1030 or NX1040 sensors provide
checking circuits for fail safe operation. Two PID setpoints are available for the chosen modulation input, selectable up to two decimal
points. Track modulation is available for those applications requiring less precise control.
The NX6110 Twelve-Key Display allows commissioning and current status of the system through the use of its tactile membrane keypad.
Multi-function keys allow the commissioning engineer the ability to access the various Ratio Modes and Option Select menus. The two line
20 character Vacuum Fluorescent Display clearly illuminates the Control Variable, Firing Mode, Fuel Selected and Hours Run. It further
allows the Boiler Operator access to the Auto/Manual selector, Motor Data (servo positions) and other operational parameters such as Sys-
tem Sequence Position, Valve Proving Sequence Status, Gas Pressure, Flame Signal, Modulation Rate and Setpoint, as necessary.
Multiple Boiler Sequencing is accomplished through an RS485 Communications bus using Comfire software. Lead/Lag and Standby se
t
points for up to four (4) boilers can be configured
PART NUMBER NX6100 FUEL AIR RATIO CONTROLLER
NX6100 Stand-alone parallel positioning controller, with up to ten (10) selectable function CANbus servo-motor outputs.
Includes user configurable function blocks for custom applications. Display ordered separately.
PART NUMBER
DISPLAY MODULES FOR NX6100
NX6110 12 key CANbus display for NX6100 with upload/download of NX6100 data and three programmable relays
NXTSD104 10.4" Touchscreen Display with upload/download, full commissioning, data log, internet connection.
PART NUMBER
SERVO-MOTORS FOR NX6100
NXC04 4 wire CANbus Servo-motor, 3 ft lbs., 4 Nm, 50/60 Hz, 24 VAC.
NXC12 4 wire CANbus Servo-motor, 9 ft lbs., 12 Nm, 50/60 Hz, 24 VAC.