Preliminary Instructions; Profile; General Description - gefran GTF-Xtra Installation And Operation Manual

1.1
P
rofile
The Gefran GTF-Xtra power controller combines the functiona-
lity of a single, two or three phase solid-state power unit and
controller with the benefits of the unique integrated overcurrent
fault protection function.
The fault protection eliminates the need for extra-rapid fuses,
reducing machine downtime and the cost of replacing fuse fai-
lures. It does so by instantaneously monitoring load current,
cutting the power if the load reaches a pre-set threshold and
isolating the power switching devices.
In applications susceptible to intermittent short-circuits and
overloads, the Gefran Xtra power controller can be program-
med to restore power automatically when the fault has cleared,
preventing complete process shutdown and maintaining pro-
duction.
Alternatively, power can be manually restored, locally or remo-
tely.
A soft-start ramp is applied when the current is restored, to pre-
vent system damage in the event that the fault is not effectively
cleared.
The GTF-Xtra controller is compact, modular and optimised to
control virtually any type of restive heating system in a wide
range of industrial applications.
Impressive functionality is assured by a comprehensive array of
options that are configurable with intuitive, guided-set-up, PC-
based Windows tm software.
GTF-Xtra always provides an RS485 serial connection with
Modbus RTU protocol to control currents, voltages, powers,
load status, and device status from the supervisor terminal
(HMI) or PLC
GTF 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 SSR in short circuit
- Alarm for load in short circuit or overcurrent
Voltage Diagnostics:
- Alarm for absence of phase
Temperature Diagnostics:
- Alarm for over temperature of power module
Power control with Soft start ramp limits load, optimizes the con-
sumptions and increases the load operating duration.
This exclusive function is a resettable internal protection against
overcurrents: it eliminates the external (always problematic) use
of high-speed fuses and greatly reduces the length and cost of
machine downtime caused by a search for new fuses.
2
1 • PRELIMINARY INSTUCTIONS
Device parameters can be configured from PC, by means of a sim-
ple configuration SW which lets you save all parameters in a con-
figuration file that is easy to manage and to copy to other devices.
Moreover, an RS485 serial connection of GTF is offered with
Modbus RTU protocol to control currents, voltages, powers, load
status, and device status from the supervisor terminal (HMI) or
PLC.
1.2
GTF is single-zone advanced solid state power unit, extremely
compact, equipped with different optional functions; it offers an
exclusive combination of performance, reliability, and flexibility.
In particular, this new line of Gefran controllers is the ideal
solution for sectors demanding high performance and continuity
of service, such as:
• Metal heat treating furnaces
• Vacuum furnaces with graphite elements
• High-temperature furnaces
• Boosters for glass lines
• Quick cutting on blow molding lines
• Machines and lines with unwanted current peaks and arcs
• "Fuse-free" solutions
The modules series GTF controllers are based on an extremely
versatile hardware and software platform, with options to select
the best I/O configuration for your system.
GTF is used for the power control of single-phase and 2-phase
loads, including resistive loads with high and low temperature
coefficient, short wave IR lamps, or transformer primaries.
The section contains general information and
warnings to be read before installing, configuring and
using the controller.
G D
eneral escriPtion
Attention: the description of programming and
c o n f i g u r a t i o n p a r a m e t e r s a r e c o n t a i n e d i n
the "Programming and configuration" manual,
downloadable from the website www.gefran.com
80994B_MHW_GTF-Xtra_05-2016_ENG