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FREQUENCY CONVERTER
Inverter technical specifications for TBG 45/60 PN-V models
Power supply voltage: 230 Vac 50/60 Hz single-phase
N. 3 adjustment buttons
N.4 green leds indicating the usual motor rotation speed level (Vs,
V1, V2, V3)
N.8 red leds indicating the frequency value of the output signal in
relation to the usual speed level.
N. 1 230 Vac digital output through clean contact
PC connection for diagnostics and parameter setting through
serial port EEPROM for storing operating parameters and alarm/
fault registration.
Minimum working frequency: 18 Hz
Maximum working frequency: 50 Hz
Instructions for adjusting the motor rotation speed
The inverter allows the adjusting of three rotation speeds for the
motor-fan:
Vs level (factory setting: 30 Hz): rotation speed in relation to the
burner ignition stage
V1 level (factory setting: 25 Hz): rotation speed in relation to the
first stage of operation
V2 level (factory setting: 50 Hz): rotation speed in relation to the
second stage of operation.
Level V3: to be ignored for TBG 45/60 PN-V models.
It is not possible to adjust V2 to a lower value than V1 and Vs.
To adjust the output signal frequency in relation to the 3 speed levels
it is necessary to enter into programming mode by holding down the
SET key for a few seconds until the leds start flashing.
Having entered programming mode, the green led related to Vs will
begin to flash; it is now possible to adjust the motor rotation speed
value in Vs by pressing the + key to increase the speed value or
the - key to reduce it, as many times as necessary.
Every press on the + o - keys corresponds to an increase or de-
crease of 0.2 Hz to the inverter output signal. To quickly change
the frequency hold one of the two the buttons down for a prolonged
period (maximum 16 seconds).
The motor follows the adjustment by increasing or decreasing rota-
tion speed in relation to the frequency set.
The frequency value is displayed approximately by the number of
flashing red leds. With each increase of 4 Hz in the output frequency
signal an additional led will light up (see table 1). The table repre-
sents the intervals in which the set frequency (INVERTER) can be
found, in relation to the number of lit red leds.
Having finished the speed adjustment in Vs, press the SET key for
about 2 seconds to go to the usual speed level in V1: the green led
related to V1 will start flashing.
At this point the same procedure described above is repeated to
adjust in sequence the motor rotation speed in V1 and V2, while
V3 is ignored for TBG 45/60 PN-V models.
Having finished the adjustment for the three speed levels, exit pro-
gramming mode by pressing the SET key again for a few seconds
until the leds stop flashing. The parameters set for the three levels
are then stored.
In the event the SET key is not pressed, the inverter will automati-
cally exit programming mode after 30 minutes.
In working conditions, the led window, allows the operating status
of the burner to be displayed: if the burner is modulating or it is in
the ignition stage the relative green led lights up corresponding to
V2 or Vs and a number of red leds according to the frequency of
the signal the motor is receiving in that moment which determine
its rotation speed.
To perform adjustments and precise frequency readings of the 3
speed levels it is necessary to interface the inverter with the PC
by connecting them via the serial port using the appropriate cable,
which can be provided by the manufacturer on request.
Inverter lock-outs and faults
If during burner operation, faults are detected in the inverter such as
overcurrents, overheating inside the board casing or a power supply
voltage drop, the inverter activates the emergency shutdown and
cuts power to the motor.
In the event of an inverter lock-out, the cause of the shutdown can
be traced by reading the error code signalled by the illumination of
the relative led (see table 2).
To restart the burner after an inverter lock-out, it is necessary to
manually reset using the following procedure:
1) Cut power to the burner
2) Wait for around one minute to allow the discharge of the elec-
trolytic condensers fitted to the inverter. During the discharge of
the condensers the leds will flash rapidly.
3) Once the leds have stopped flashing rapidly, this means that the
discharge of the condensers has finished, at this point restore
power to the burner and reactivate it.
The inverter is equipped with a EEPROM that is able to store the
machine history of the last ten alarms. To access this data it is
necessary to interface inverter with the PC by connecting them via
the serial port using the appropriate cable, which can be provided
by the manufacturer on request.
1 Key for selecting and setting speed level
2 Key to increase motor rotation speed
3 Key to decrease motor rotation speed
4 Serial port access plug
5 Row of red leds indicating inverter output frequency
6 Row of green leds indicating speed level
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Summary of Contents for TBG 45 PN-V
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