02 Oct 2014, 00:20
bueno parece que esta solucionado pero no tengomuy claro como el converter tiene una regulacion de 1 a 8 la primera probamos en 1 no arrancaba pero no giraba y las siguentes en 8 maximo y hacia lo mismo y despues hemos cambiado las fases por que en las intrucciones dice algo de las fases pero no entiendo muy bien
pego el texto para quien le interese
Care should be taken with the connection of the mac
hine to the output plug/socket. If the machine has
a contactor starter the
400/415v-control coil must be fed from the phases m
arked L1, and L3. If the control circuit is fed inc
orrectly (i.e. connected to the
phase marked L2) the contactor will either not oper
ate or chatter when operating. Similarly, a contro
l transformer and/or lighting
transformer with a primary winding of 415v must be
fed from the L1 and L3 phases. Connection to the L
2 phase could lead to
premature ageing of the control transformer.
The static converter can accommodate both a 415v co
ntrol circuit (as above) and a single phase 240v co
ntrol circuit provided the
L1 phase is used in conjunction with the output Neu
tral. Multi-motor applications should be supplied f
rom the converter output via
a three-phase ring main or similar.
Before the output plug is inserted into the socket,
switch the converter on using the on/off switch. N
.B. The 1.1kW and 1.5kW units
have no on/off switch. The “supply on” light and t
he “boost on” light should both come on. Note that
if the open circuit voltages
were checked at this point phase to phase readings
would be as follows. 400/420v between L1 and L3; 40
0/420v or 560/580v
between L2and L3; No volts or 160v between L1 and L
2. Note that the voltages do not relate to earth,
as they would on mains
three-phase electricity. Switch the converter off
and insert the output plug.
4) Care should be taken with the setting of the pow
er-regulating switch below the on/off switch. The l
owest setting corresponds to the minimum loading, the highest setting to the max
imum loading of the converter.
The initial surge required to start the motor is pr
ovided by the boost circuit of the converter. The
“boost on” light indicates the
circuit is energised. The circuit is controlled aut
omatically from within the converter, switching on
whenever a motor is ready to
start and switching off once the motor has attained
its full running speed. If the setting of the swi
tch is too low the motor will
struggle to start and the boost light will stay on.
If the setting is too high the motor will sound r
ough when running, again the boost
light may stay on.
The optimum setting for a given single or multi-mot
or application is determined by quantifying the pha
se to phase voltages at the
motor/starter with the boost light out and the moto
r(s) running. The voltmeter fitted to the converter
indicates the voltage drawn
between L1 and L2. This is the “artificial” phase i
nduced by the motor. When commissioning the driven
machine, bear in mind that
this voltage is only established once the boost lig
ht is out and the motor is running. Adjust the sele
ctor switch to the setting where
this voltage is as close to 400/415 volt as possibl
e. The best overall balance of voltages will corres
pond to the correct switch
setting.
Note that the voltages do not relate to earth as th
ey would on a main three-phase supply system. If th
e rotation of the driven
machine motor is incorrect, ensure that the convert
er phases marked L1 and L3 are changed for 415-volt
phase-phase control
circuitry. For 240-volt phase-neutral control circu
itry, ensure that phases L2 and L3 are changed
If the boost light does not go out within a few sec
onds the machine should be switched off to avoid th
e possibility of electrical
damage to the motor. The reason for this condition
should be checked and corrected before the motor i
s restarted. Generally, the
setting for the start and run modes of the motor wi
ll coincide. However for certain applications part
icularly those with high torque
starting requirements it may be necessary to trim t
he switch back from a higher to a lower setting onc
e the boost light has gone
out to ensure a satisfactory balance of voltages fo
r the running condition. For a multi-motor load, t
he largest motor should always
be started first. An increase or decrease in load
may necessitate an adjustment on the selector switc
h setting to accommodate the
load variation. The boost light may switch on and
then off when an additional motor is started. This
is normal and may be
disregarded.
5) The motor starting current is limited to approxi
mately three times the full load current of the mot
or. The starting characteristics
of a three-phase motor supplied by a converter are
similar in nature to Star/Delta starting on a three
-phase system. Significant
reductions in starting torque are experienced when
compared with direct on line starting on a three-ph
ase supply. For machinery
supplied by a converter, direct-on-line starting is
recommend. For machinery fitted with Star/Delta s
tarters, the period in the star
connection should be as short as possible to ensure
a successful start.
6) Where machinery incorporates ancillary motors of
a fractional horsepower nature (e.g. table travers
e/feed, suds/coolant pump,
table rise/fall) it is imperative that these motors
are operated in conjunction with and not independe
nt of the main drive motor.
Starters should be interlocked accordingly.
7) When using a converter with multi-speed machines
, care should be taken to allow the motor to slow d
own before switching
from a high speed to a low speed. Failure to do th
is could damage both the converter and the motor.
Similarly when reversing a
motor, ensure the motor is allowed to come to rest
before the rotation change is effected. If either
of these conditions is
unacceptable (i.e. frequent stop/start, frequent fo
rward/reverse, screw cutting) the use of a pilot mo
tor may offer a solution (see
below). The use of the Rotary converter is also rec
ommended as an alternative.
8) For some three phase applications with small mot
ors, motors of unusual magnetic characteristics (i.
e. multi-speed/reversing) or
motors subjected to abnormal load conditions it may
be necessary to connect a pilot motor in parallel
to the driven machine to
maintain a satisfactory artificial phase. In these
instances, the pilot motor should be at least equa
l in rating to the driven machine,
preferably larger. The use of a 2-pole (2800rpm) m
otor fitted with a starter and overload protection
device is recommended.
NOTE - The output from a TRANSWAVE Converter cannot
be compared directly to a mains three-phase electr
icity supply. The
TRANSWAVE Converter offers an artificial means by w
hich a three-phase motor (or motors) can be operate
d from a single-phase
electricity supply. The TRANSWAVE Converter cannot
be made to work equally on all motors, even though
the horsepower, speed
and voltage ratings are the same. Motors of differi
ng manufacture and motors designed for differing ap
plications vary considerably
in their electrical characteristics. Therefore it
is not always possible to make a universally applic
able converter to operate a motor
of given horsepower and rating. TRANSWAVE Converter
s are not designed for use in conjunction with cont
inuous duty application.
