90
Description of machine operation
5.2)
rectifier bridge (c) - power inverter with overtemperature
detection device (d) - resonant circuit (inductive-capacitive
circuit) (e) - power transformer (f)
(see fig. 5-6)
The three-phase power supply voltage is applied to the rectifier
bridge (c), the output of which is connected to the power inverter
(d) via cables no.22(+) and no.23(-).
The inverter has a bridge type structure with four power IGBTs
(one on each branch) welded directly to board 15.14.254 and
fixed to the aluminium radiator by means of screws.
The resonant circuit (inductive-capacitive circuit) at the inverter
output terminals and the presence of an auxiliary circuit on
board 15.14.254 permit operation at high (variable) frequency.
The auxiliary circuit consists of two IGBTs and two power
diodes fixed on the aluminium radiator by means of a profiled
plastic bar, but electrically insulated from the radiator by a strip
of insulating tape with low thermal resistance.
The IGBT switch-on control circuit is located on board
15.14.254.
The radiator is cooled by the air flow generated by the fan (k)
powered at 230Vac. This voltage is insulated from the mains by
means of the auxiliary transformer (l) and protected by a fuse on
board 15.14.233. The air flows from the rear grille (air inlet) of the
machine towards the front grille (air outlet). The inverter is
protected against overloads or blocking of the ventilation air flow
by a radiator temperature detection device; this device sends a
signal to the control logic which then locks the inverter and signals
the fault to the front panel.
The power transformer (f), positioned in series with the inducti-
ve-capacitive load, transfers the power to the output circuits
which are therefore electrically insulated from the power supply
network.
k)
a)
o)
l)
i)
j)
d)
e)
f)
g)
h)
e)
c)
n)
m)
b)
FIG. 5
Summary of Contents for Genesis 240 TLH
Page 1: ...REPAIRS MANUAL E N G L I S H Genesis 240 Genesis 240 TLH...
Page 9: ...Description of machine operation 91 n m k a o q r l c b i p j d s e f g h e FIG 6...
Page 11: ...Description of machine operation 93 n m k a o q r l c b i p j d s e f g h e FIG 8...
Page 22: ...LAY OUTS OF CARDS...
Page 23: ...Lay outs of cards 105 Card 15 14 233 Fig 20...
Page 24: ...106 Lay outs of cards Card 15 14 236 side A Fig 21...
Page 25: ...Lay outs of cards 107 Card 15 14 236 side B Fig 22...
Page 26: ...108 Lay outs of cards Card 15 14 236 side C Fig 23...
Page 27: ...Lay outs of cards 109 Card 15 14 254 side A Fig 24...
Page 28: ...110 Lay outs of cards Card 15 14 254 side B Fig 25...
Page 29: ...Lay outs of cards 111 Card 15 14 254 side C Fig 26...
Page 30: ...112 Lay outs of cards Card 15 14 254 side D Fig 27...
Page 31: ...Lay outs of cards 113 Card 15 14 192 Fig 28...
Page 32: ...114 Lay outs of cards Card 15 14 239 Fig 29...
Page 33: ...Lay outs of cards 115 Card 15 14 240 Fig 30...
Page 58: ...140 Diagnosis procedure J9 connector frontal side FIG 36 Card 15 14 192 FIG 37...
Page 59: ...Diagnosis procedure 141 FIG 38 Card 15 14 233 FIG 39...
Page 60: ...142 Diagnosis procedure Card 15 14 254 version 1 soldering side FIG 40A...
Page 61: ...Diagnosis procedure 143 Card 15 14 254 version 2 soldering side FIG 40B soldering side view...
Page 62: ...144 Diagnosis procedure Card 15 14 236 FP106 FIG 41...
Page 63: ...Diagnosis procedure 145 FIG 43 H F 15 14 192 wring diagrama FIG 42...
Page 64: ...146 Oscillograms Oscillogram 1 Oscillogram 2...
Page 65: ...Oscillograms 147 Oscillogram 3 Oscillogram 4...
Page 66: ...148 Oscillograms Oscillogram 5 Oscillogram 6...
Page 67: ...Oscillograms 149 Oscillogram 7 Oscillogram 8...
Page 68: ...150 Oscillograms Oscillogram 9 Oscillogram 10...
Page 69: ...Oscillograms 151 Oscillogram 11...
Page 73: ...Parts dismantling and re installation procedure 155 FIG 44...
Page 74: ...156 Parts dismantling and re installation procedure FIG 45...
Page 75: ...Parts dismantling and re installation procedure 157 FIG 46 FIG 47...
Page 76: ...158 Parts dismantling and re installation procedure FIG 48...
Page 79: ...Operating tests and settings 161 Card 15 14 239 FIG 49...
Page 80: ...162 Operating tests and settings Card 15 14 254 FIG 50...
Page 81: ...Operating tests and settings 163 FP106 FIG 51...