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80960G_MHW_GTF_05-2019_ENG
POWER (SOLID-STATE)
CATEGORY OF USE
(Tab. 2 EN60947-4-3)
AC 51 resistive or low inductance loads
AC 55b infrared lamps
AC 56a: transformer
Trigger mode PA - Load management by adjusting the ring angle (only conguration single-phase
or delta open)
ZC - Zero Crossing with constant cycle time (settable in range 1-200sec)
BF - Burst Firing with variable cycle time (GTT) optimized minimum.
HSC - Half Single Cycle corresponds to Burst Firing that includes ON and
OFF half-cycles.
Useful for reducing icker with short-wave IR loads (applied only to
single-phase resistive or 3-phase 6-wire open delta loads).
Feedback mode V, V2: Voltage feedback proportional to RMS voltage value on load
(useful to compensate possible variations in line voltage).
I, I2: Current feedback: bound to RMS current value on load to
compensate variations in line voltage and/or variations in load impedance.
P: Power feedback: proportional to real power value on load (useful to keep
constant values of electrical power assigned regardless of load impedance
or line voltage variations).
Max rated voltage
480Vac 600Vac 690Vac
Work voltage range
90…530Vac 90…660Vac 90…760Vac
Non-repetitive voltage
1200Vp 1600Vp 1600Vp
Rated frequency
50/60Hz auto-determination
Rated current AC51 -AC55b
non-inductive or slightly inductive
loads, IR lamps (@ Tamb = 40°C)
MODEL GTF
2 5 40 50 60 75 90 120 150 200 250
2 5 A 40A 50A 60A 75A 90A 120A 150A 200A 250A
Rated current AC56A
permitted trigger modes: ZC, BF con DT
(Delay Triggering),PA with softstart (@ Tamb =40 °C)
2 0 A 32A 40A 50A 60A 75A 100A 125A 160A 200A
Non-repetitive overcurrent (t=10msec)
400A 520A 520A 1150A 1150A 1500A 1500A 5000A 8000A 8000A
I²t for melting (t=1…10msec) A²s
450 1800 1800 6600 6600 11200 11200 125000 320000 320000
Critical Dv/dt with output deactivated
1000V/μsec
Held nominal voltage of on the impulse
4KV
Nominal current for short circuit condition
5KA
FUNCTION
Diagnostics Detection of short load circuit absence line voltage,
HB alarm (partial breakage of load)
OPTIONS
Options - Timed Soft-Start ring ramp, with or without peak current control
- Soft-Start ring ramp, specic for infrared lamps
- Timed shut-off ramp
- Limitation of RMS current in load
- 0-90° Delay-Triggering for ring inductive loads in ZC and BF mode
Diagnostic - SCR in short circuit (presence of current with OFF control)
- Absence of SCR current when under load.
- Overtemperature alarm
Current read
• HB alarm interrupted or partially interrupted load
• Automatic calibration of HB alarm setpoint starting from current value in load
• Alarm for load in short circuit or overcurrent
Voltage read
• No line voltage
GENERAL DATA
Power supply GTF 25-120A: 24 Vac 50-60 Hz / Vdc ± 25%, max 3VA
GTF 150-250A: 24 Vac 50-60 Hz / Vdc ± 25%, max 11VA
Power supply external fan
(only for GTF120A model)
24 Vdc ± 10%, max 200mA
Signals 5 leds: RUN: run state of CPU
STATUS: operating state
ALARM: state of alarm output
DIGITAL INPUT: state of digital inputs
ON / OVER-TEMP.: state control tirystor / Alarm for overheating
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