gefran GFW 400A, Инструкция по установке и эксплуатации

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80999D_MHW_GFW 400-600A_07-2020 _ENG
1.1 P
rofile
The “GFW” from 400A to 600A series of microprocessor advanced solid
state power units controls high electric powers with different types of
heating elements, single-phase, biphase or triphase.
Current levels range from 400A to 600A, nominal voltage from 480Vac
,600Vac, 690Vac.
The command input is configurable and accepts 0-10V, 0/4- 20mA
signals, potentiometer, logic signals, including with PWM modes for cost
effective solutions.
The device can also be operated via Modbus RTU serial communication,
with IN/OUT chain connections facilitated by plug-in RJ10 (telephone)
connectors.
The several trigger modes are software configurable and provide:
- ZC:
Zero Crossing constant cycle time (settable in range 1-200sec),
for conventional loads
- BF:
Burst-Firing, Zero crossing with optimized minimum cycle time,
for systems with low thermal inertia, medium-wave IR lamps
- HSC:
Half Single Cycle Zero Crossing corresponds to Burst Firing that
manages single semi-cycles of conduction or stop cycles, useful
for short-wave IR lamps, reduces flickering and limits generation
of EMC noise on the power line (applied only to single-phase load
or open delta).
- PA:
Phase angle control, useful for short-wave IR lamps, transformer
primaries. Completely eliminates flickering of load filaments, but
generates EMC noise on power line (harmonics).
Soft Start ramp functions can be assigned to these controls, with options
such as “current limit” that keeps current peaks at power-on and RMS
current level at full power under control. Thanks to sophisticated Hardware
and Software solutions, you can precisely control different types of loads.
Phase angle
control (the only control method that completely eliminates
IR lamp flickering), matched with
current, voltage, or load power
feedback
functions, let you confidently use “critical” applications such as
(for example), special resistors such as special Super Khantal™ heating
elements, Silicon Carbide resistors, or transformer primaries either
single-phase or triphase.
GFW runs complete diagnostics of current, voltage, power, and
temperature levels:
Current Diagnostics:
- Total and partial load interrupt alarm
- Self-learn function of alarm limit for interrupted load
- Alarm for SCR in short circuit
- Alarm for load in short circuit or overcurrent
- Alarm for interrupted internal fuse
Voltage Diagnostics:
- Alarm for absence of phase
- Signal for incorrect rotation of 3 phases (for triphase applications)
- Alarm for triphase line unbalance
Temperature Diagnostics:
- Measurement of power module temperature
- Alarm for over temperature of power module
- Measurement of power terminals temperature
- Alarm for over temperature of power terminals
- Alarm for absence of 24V supply to cooling fan
Power control with Soft start ramp limits load, optimizes the consumptions
and increases the load operating duration.
Parameters can be configured from an optional keypad with LCD screen
that attaches magnetically to the front panel and from PC with the
GF_eXpress configuration kit, which lets you save all parameters in a
configuration file that is easy to manage and to copy to other devices.
GFW always provides an RS485 serial connection (PORT1) with Modbus
RTU protocol to control currents, voltages, powers, load status, and
device status from the supervisor terminal (HMI) or PLC.
A second (optional) communication port is offered that lets you choose
from among the following Fieldbuses: Modbus RTU, Profibus DP,
CanOpen, Devicenet, Modbus-TCP, Ethernet IP, EtherCAT .
The section contains general information and warnings to be
read before installing, configuring and using the controller.
1.2 G
eneral
D
escriPtion
GFW is an extremely compact multi-zone advanced solid state power
unit equipped with different optional functions; it offers an exclusive
combination of performance, reliability, and flexibility.
In particular, this new line of Gefran solid state relays is the ideal solution
for sectors demanding high performance and continuity of service, such
as:
• Thermoforming
• Blowing
• Hot runners for injection presses
• Texturizing of fibers
• Heat treatment furnaces
• Woodworking machines
• Glass tempering furnaces
The modules Series GFW are based on an extremely versatile hardware
and software platform, with options to select the best I/O configuration
for your system.
GFW is used for the power control of single-phase, Dual-Phase and
3-phase loads, including resistive loads with high and low temperature
coefficient, short wave IR lamps, or transformer primaries.
Attention: the description of programming and configuration
parameters are contained in the “Programming and
configuration” manual, downloadable from the website
www.gefran.com
1 • PRELIMINARY INSTRUCTIONS