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(214) 340-7500Gefran Power Controls
GFX4 Power controller 4 PID loops up to 80kW
GFX4 is a four independent loop controller, designed to manage electrical power. GFX4 is a compact unit bounding different technological elements like:
- controller
- solid state relay
- current transformers
- fuses-holders (option)
The final result is a cost saving in terms of space and cabling.
GFX4 consisting of:
- power management unit
- analog and digital inputs
- analog and digital outputs
- standard digital communication
- integrated solid state relays
- fuses-holder (option)
Geflex controls autonomously the four loop controllers, furnishing a complete diagnostics like the loaded current, the control of the zones, the alarms state.
A specific step by step software tool has been develop in order to assist the product configuration based on the different applications.
Communication with the outside is of primary importance.
Geflex dialogs with the operator terminals according to the most popular protocols: from the simple and efficient Modbus to, by a second optional fieldbus communication, the by-now indispensable Profibus DP, CANopen, DeviceNet, Modbus RTU, Ethernet Modbus TCP.
The product’s furnished with a standard configuration, simple and quickly to modify. The assignment of different functions to the outputs is very simple.
Ideal for control of mono-bi-tri-phase 30, 60, 80 kW resistive loads
Unit consisting of:
- Controller
- 30, 60, 80kW solid state relay
- Current transformers (one or four)
- Fuses-holder (option)
- 4 universal main inputs
- 4 heat/cool independent PID
- 4 main output internally wired to the SSR
- 4 auxiliary analog inputs (option)
- 4 configurable output (option): relay / logic / TRIAC / continuous
- 2 configurable relay alarm output
- 2 digital inputs
- Standard digital communication: Modbus RTU
- Optional Fieldbus communication: Profibus DP, CANopen, DeviceNet, Modbus RTU, Ethernet Modbus TCP
- DIN rail or panel mounting
GTF Single phase power controller up to 250A
The GTF series of microprocessor advanced solid state power unit controls, in compact and optimized solutions, offer various power outputs for use with different types of heating elements.
Current levels range from 25A to 250A, nominal voltage from 480Vac to 600Vac. The command input is configurable and accepts 0-10V, 0/4-20mA signals, potentiometers, logic signals, including with PWM modes for cost effective solutions.
The device can also be operated via Modbus RTU serial communication, with cascade chain connections facilitated by plug-in RJ10 (telephone) connectors, or with various types of Fieldbus (Optional).
The many trigger modes are software configurable and provide:
- ZC: Zero Crossing constant cycle time (settable in range 1-200sec), for conventional loads
- F: 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 (corresponding 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 3-phase open delta 6 leads)
- PA: Phase angle control, useful for short-wave IR lamps, transformer primaries. Completely eliminates flickering of load filaments.
Soft Start and soft stop ramp functions can be assigned to these controls with limitation of current peaks and/or maximum RMS current level.
Thanks to sophisticated Hardware and Software solutions, you can precisely control different types of loads.
Phase angle control matched with current limit and current, voltage, or load power feedback functions, can be used with “critical” applications such as (for example), special resistors such as special Super Kanthal™ heating elements, Silicon Carbide resistors, or transformer primaries.
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 SCR in short circuit - Alarm for load in short circuit or overcurrent
- Alarm for interrupted internal fuse Voltage Diagnostics:
- Alarm for absence of phase
Temperature Diagnostics:
- Alarm for over temperature of power module The power control with Soft start ramp limits load current peaks at power-on, ooptimizes the consumptions and increases the load operating duration.
A specific, linear Soft Start curve, designed to control gradually the current in the initial phase is available for IR lamps.
The internal resettable “electronic fuse” is an exclusive option: it lets you avoid extra-rapid fuses and greatly reduces machine downtimes and their cost.
Device parameters can be configured from PC, by means of a simple configuration SW which lets you save all parameters in a configuration 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.
Ideal for control of resistive loads with low and high thermal coefficient, IR lamps, transformers, in mono-bi-triphase configurations and currents up to 250 Amperes
- Current levels from 40A to 250A
- Rated voltage 480Vac to 600Vac
- Trigger configurable in “Zero crossing” (Fixed Cycle, Burst Firing, Half single Cycle) or “Phase angle”
- Analog control input, configurable in: Volt, mA, potentiometer (digital in PWM)
- Incorporated Resettable Electronic fuse (optional)
- Total and partial load interrupt alarm (HB) (optional)
- Communication Modbus RTU, RS 485 2 wires (optional)
- Current limit (optional)
- V, I, P feedback (optional)
- Connections for monophase and triphase applications (just in zero crossing” mode)
- Configuration from PC (by USB – TTL cable)
- CE, TÜV, UL Marking
GTZ Three-phase solid state relay, up to 55A
3-phase "zero crossing" power solid state unit for control of resistive and inductive loads, complete with aluminum heatsink and DIN guide connection.
Integrated device designed for industrial applications demanding control of high power levels and frequent switching, with loads up to 3 x 55A (AC51) at 400/480/600Vac.
Control is logic type (Vdc), signaled by LEDs. Each phase is controlled by means of semiconductors.
The constructive elements, special production process, and new, sturdy case, provide excellent reliability and continuity of service.
The device is sized for continuous operation at nominal current in a 40°C installation environment.
All versions are protected against overvoltages and against junction overtemperature, with signal LEDs and (optional) solid state alarm output.
The device is supplied complete with covers to protect against direct contacts (covers are removable for wiring).
Accessories available: fuses, fuse holders, support for panel mounting, thermostats and fans.
Description:
Zero-voltage switching. Current range: 25A to 55A
- 3-phase alternating current solid state relay with integrated hestsink
- Zero crossing switching
- 3-phase nominal current 3x25/40/55A
- Nominal voltage up to 600VCArms Control range:5...32Vdc
- Optoinsulation (input/output) 4000Vrms
- Integrated overvoltage suppressor
- Non-repetitive voltage up to 1200Vp
- Component selection to operate at max. declared current with ≤ 40°C temperature
- DIN bar mounting with fast clip-on
- In Conformity with EN60947-4-3 and UL508
GTT Single-phase solid state relay, up to 120A
The GTT family of solid-state relays has been designed with the aim of providing very accurate control of the load from an analogue input signal (0-10V or 0-20/4-20mA) or a potentiometer (from 1kOhm to 10kOhm ).
The electronic design ensures that the cycle time for proportioning the power is automatically optimized.
The number of cycles that the GTT supplies to the load (fast cycling) for a given input signal is calculated to be the minimum possible to maintain the necessary accuracy.
This guarantees a very fast and accurate control loop that enables the GTT, driven by a controller or a PLC with analogue output, to obtain very precise control.
The GTT can be uses in three phase systems, using master-slave control architecture in which the control signal drives only one GTT (master) and this unit supplies the synchronized signals to the other units (slaves).
Optional monitoring for an interrupted load can be provided (HB).
This accepts a 500mAac input from a current transformer.
The trip point is adjustable with trimpots and there is LED indication and a normally open voltage free relay contact output.
The GTT solid-state relay has a green LED to indicate the presence of the 24Vac power supply and a red LED to indicate the switching state as a function of the input signal.
This LED will be continuously off for zero power and fully on at maximum and will flash at all intermediate values.
The units offer optional accessoires for panel mounting, fuses and fuseholders, current transformer and voltage transformer
Description:
Zero-voltage switching, optimised fast cycle time. Current range: 25A to 120A, diagnostics and load interrupt alarm
- Command input from analogue voltage or current signal or potentiometer
- Switching at voltage zero crossing
- Partialization of wave train power with dynamically optimized time cycle
- Antiparallel double SCR
- 2 led for supply indication, “ON” state, 1 optional LED for load interrupt alarm
- 4000V isolation between input circuit and power output
- MOV (varistor)
- Optional monitoring of interrupted load
- DIN rail mounting (standard); Panel mounting (optional)
GTS Single-phase solid state relay, up to 120A
The insertion and disinsertion of an electrical load requires the use of a suitable switching device and protection that is safe and immune to interference.
Many industrial applications require the load to be activated with very short switching times in order to maintain accurate control.
The solution is to use solid-state relays. Gefran offers a range of solid state relay units, GTS, with current ratings between 10A and 120A and nominal voltages of 230Vac, 480Vac.
According to the type of load, there are Triac versions, and double SCR versions.
All models have been designed to guarantee continuous operation at the full current rating in an ambient temperature up to 40°C.
For less critical operations, it is possible to use the products at currents greater than their nominal rating (refer to the heat dissipation curves).
A range of accessories is available: fuses, fuse-holders and DIN rail connections.
Description:
Zero-voltage switching. Current range: 15 A to 120A
- Input control from logic signal
- Switching at voltage zero crossing
- Versions with TRIAC and with double SCR in antiparallel
- LED power on indicator
- MOV protections (varistor)
- Fastening to DIN bar (standard); fastening to panel (optional)
GT Single-phase solid state relay, up to 120A
The GT family of solid-state relays has been designed with the aim of providing very accurate control of the load thanks to an analog control input, in voltage at 0…5V; 0…10V or in current at 0…20/4…20mA or a potentiometer (from 1Kohm to 10 Kohm).
The electronic design ensures that the cycle time for proportioning the power is automatically optimized.
The number of cycles that the GT supplies to the load (wave trains) for a given input signal is calculated to be the minimum possible to maintain the necessary accuracy.
The GT can be used in three phase systems, using master-slave control architecture in which the control signal drives only one GT (master) and this unit supplies the synchronized signals to the other slaves.
Two GS modules can also be used as slaves (logic control). A load interrupt control option (HB) is available without having to use an external current transformer; alarm limit is settable with trimmer and yellow LED signal, with voltage-free contact, normally open.
The GT solid-state relay has a green LED to indicate the presence of the 24Vac power supply and a red LED to indicate the switching based on the analog control input signal.
The LED signal will be continuous (off at minimum, on at maximum) at the ends of the scale, pulsing for intermediate values.
The units offer optional accessoires for panel mounting, fuses and fuseholders, current transformer, isolation transformers.
Use the relè with an opportune heatsink (see section accessories).
GD Single-phase solid state relay, up to 40A
The GD series of solid state relays (zero crossing type) are solid state actuators with heater break diagnostics (Hb function), selectable current scale, and adjustable setpoint. Junction overheat protection is available as an option.
An alarm signal is provided in output. The GD series of solid state realays are offered with currents of 40A, rated voltage 480 Vac, and Vdc input control signal.
Voltage transistors are protected by MOV (varistor).
See the dissipation curves for other performance conditions.
The GD series of relays must be used with an appropriate heatsink. Thanks to their high performance, they are appropriate for very short switching times, with millions of operations without wear on components.
Various accessories are available, such as heatsinks, fuses and fuse holders.
Description:
Zero-voltage switching. Current range: 40A, diagnostics and load interrupt alarm
- AC solid state relays with logic signal control
- Switching at voltage zero crossing
- Built-in heatsink o Rated current: 25Arms, 40Arms
- Non-repetitive voltage: 1200 Vp
- Rated voltage: up to 530VCArms
- Input control range: 5…30 Vdc
- Optical isolation: 4000Vrms (input/output)
- Built-in HB diagnostics (partial heater break, junction in short circuit)
- Overheat protection (optional)
- 2-color control signal LED in input/alarm state
- On-board MOV (varistor)
GZ Three-phase solid state relay, up to 55A
3-phase "zero crossing" solid state relay for control of resistive and inductive loads.
Integrated device designed for industrial applications demanding control of high power levels and frequent switching, with loads up to 3 x 55A (AC51) at 400/480/600Vac.
Control is logic type (Vdc), signaled by LEDs. Each phase is controlled by means of semiconductors.
The constructive elements, special production process, and new, sturdy case, provide excellent reliability and continuity of service.
All versions are protected against overvoltages and against junction overtemperature, with signal LEDs and (optional) solid state alarm output.
The device is supplied complete with covers to protect against direct contacts (covers are removable for wiring).
Accessories available: heatsink, thermostats, fans, fuses and fuse holders.
WARNING:
The GZ models must be used in conjunction with an appropriate heatsink (Accessory).
Installation must precisely observe the warnings contained in the installation notes.
Description:
Zero-voltage switching.
Current range: 10A to 55A
- 3-phase alternating current solid state relay
- Zero crossing switching
- 3-phase nominal current 3x10/25/40/55A
- Nominal voltage up to 600VCArms
- Control range: 5...32Vdc
- Optoinsulation (input/output) 4000Vrms
- Integrated overvoltage suppressor
- Non-repetitive voltage up to 1200Vp
- In Conformity with EN60947-4-3 and UL508
GS Single-phase solid state relay, up to 120A
Zero crossing relay with antiparallel thyristor output is the most used solid state relay in industrial applications.
"Zero crossing" relay is energised when voltage meets the zero point and disenergised when current meets the zero point, depending on the signal control on the input circuit.
For applications with merely resistive loads, "T" version is available with TRIAC output.
This relay has been designed to stand high-value transitory applications.
When the relay has to stand high currents for a long period, it is necessary to grant a proper dissipation and an adequate electrical connection between relay terminals and the load.
Varistors, fuses, thermostats and fans are available as fittings.
Description:
Zero-voltage switching. Current range:15A to 120A
- Alternating current solid state relay
- Zero crossing switching
- Copper/semiconductor coupling technology
- 10, 15, 20, 25, 40, 50, 60, 90, and 120 Arms Arms nominal current
- Non-repetitive voltage: up to 1200 Vp
- Nominal Voltage: up to 530VCAms
- Input control range: 5...32 Vcc
- 4000 Vrms optoinsulation (input-output)
- Green LED, drive input signal indicator
- MOV (varistors)
GQ Single-phase solid state relay, up to 90A
Zero crossing relay with antiparallel double SCR output is the most used solid state relay in industrial applications.
In fact, it can be used for resistive, inductive and capacity loads.
"Zero crossing" relay is energised when voltage meets the zero point and disenergised when current meets the zero point, depending on the signal control on the input circuit.
This relay has been designed to stand high-value transitory applications. When the relay has to stand high currents for a long period, it is necessary to grant a proper dissipation and an adequate electrical connection between relay terminals and the load.
Heatsinks, plug-in connectors, varistors, fuses, thermostats and fans, adhesive dissipating strips, are available as fittings.
Description:
Zero-voltage switching. Current range:15A to 90A
- Alternating current solid state relay
- Zero crossing switching
- Copper/semiconductor coupling technology
- 10, 25, 50, and 90 Arms nominal current
- Non-repetitive voltage: up to 1600Vp
- Nominal Voltage: up to 600VCAms
- Control voltage : 3...32Vcc and 20...260Vac/Vcc with connector
- Isolation (input-output) 4000Vrms
- Red LED drive active signal
- Internal MOV (option)
GTD Single-phase solid state relay, up to 40A
The GTD series of power solid state relays (zero crossing type) are solid state actuators with built-in heatsink, heater break diagnostics (Hb function), selectable current scale, and adjustable setpoint. Junction overheat protection is available as an option.
An alarm signal is provided in output. The GTD series of power solid state relays are offered with currents of 25A and 40A, rated voltage 480 VAC, and Vdc input control signal.
Voltage transistors are protected by MOV (varistor). All models are designed to guarantee performance at rated currents, with continuous power conduction at 40°C. See the dissipation curves for other performance conditions.
Thanks to their high performance, they are appropriate for very short switching times, with millions of operations without wear on components.
Various accessories are available, such as a front panel attachment, fuses and fuse holders.
Description:
Zero-voltage switching. Current range: 25A to 40A, diagnostics and load interrupt alarm
- AC power solid state relays with logic signal control
- Switching at voltage zero crossing
- Built-in heatsink
- Rated current: 25Arms, 40Arms
- Non-repetitive voltage: 1200 Vp
- Rated voltage: up to 530VCArms
- Input control range: 5…30 Vdc
- Optical isolation: 4000Vrms (input/output)
- Built-in HB diagnostics (partial heater break, junction in short circuit)
- Overheat protection (optional)
- 2-color control signal LED in input/alarm state
- On-board MOV (varistor)
- DIN rail or panel mounting (optional)