AUTO RESETTABLE ALARMS
Over-voltage
It is active when main power supply is:
> 135 Vac for nominal 115 Vac;
> 245 vac for nominal 230 Vac.
It is inactive when main power supply is:
< 125 Vac for nominal 115 Vac;
< 245 Vac for nominal 230 Vac.
Under-voltage
It is active when main power supply is:
< 50 Vac for nominal 115 Vac;
< 100 vac for nominal 230 Vac.
It is inactive when main power supply is:
> 60 Vac for nominal 115 Vac;
> 120 Vac for nominal 230 Vac.
Over-temperature (controller)
It is active when the power module temperature is > 90°C (194°F).
It is inactive when the power module temperature is < 80°C (176°F)
When an auto resettable alarm is active, the unit switch off, the Fault
signal is low (0V) and the alert LED flash. When an auto resettable
alarm cease the Fault signal goes high (5V), alert LED is steady and
the unit restart with set settings, if ON signal is present.
SEMI-PERMANENT ALARMS
Start-up
If the starting sequence of the unit fails (eg. phase disconneted, rotor
blocked before start, etc...), the driver opens the power module and
attempts to restart for 20 times (around 20 sec). The counter to
attempt the restart resets completely when unit works for more then
16 sec. After 20 attempts, the drive passes in blocking state, the
fault signal is low (0V) and the alert LED blinks.
N
ote
:
During restart no alarm is active. The alert LED is temporary
OFF.
Rotor blocked
If the pump rotation is blocked, the driver opens the power module
and it passes into blocking state.
Module Fault (hardware)
Intended during running. Tipically if an overload condition happens. If
in the pump rotation a peak (typically more than 1000 W) of current
appears in the module, the driver disables the power module and
the TMFR/TSFR motor passes in blocking state.
Over-load power
If in the pump rotation an overload happens and with a speed
regulation is not able to reduce power within 375 W, the driver
disables the power module and passes in blocking state.
Over-current limit (50% more than the over-load power)
If in the pump rotation a peak of the current appear for an overload
(more 400 W), the driver opens the power module and it passes in
blocking state. When a semi-permanent alarm happens (blocking
state) the Fault signal goes low (0V), the alert LED blinks and for
restarting the unit it is necessary one of these two operations:
- Turn off the main power supply and after turn on it again;
- Turn off the ON/OFF digital signal and after turn on it again.
These two operations RESET the driver. If the cause of the block is
removed the unit will start removing the Fault signal.
TYPICAL DRIVER BEHAVIOUR WHEN IN OVERLOAD
The driver, when the power output reach the maximum value (more
then 400W), it decrease and modulate automatically the rotational
speed, up to minimum speed, for maintaining the maximum load
within 375W. If it couldn’t modulate it enter in “over-load power”
semi-permanent alarm mode.
ELECTRIC INSTALLATION
The power connection wires must be of appropriate section, in
proportion to the current absorbed in the specific application.
The cable shield must be connected to the ground both on the
inverter and on the motor side.
The power cables must be separated from the control cables; it is
forbidden passing them in the same raceway. It is important to keep
separated the motor cable from the cable going to the electronic.
MECHANICAL INSTALLATION
The TMFE2 controller and TMFR/TSFR motor+pump unit are cooled
by forced or natural ventilation. For this reason the unit must be
mounted taking into account a 40 mm space around it and, in
correspondence to the heat sink, 150 mm on top and underneath in
order to grant the free circulation of cooling air. In case of mounting
more units stacked it is necessary to leave a minimum of 300 mm
vertically between the 2 units.
The air must be free from dust or corrosive substances. In case
this is not possible, the heat sink must be periodically cleaned.
Condensation of vaporized fluids must be avoided at all times.
The environmental humidity must not exceed 90%. The ambient
temperature in the chassis of the machine must not exceed 40
°C; it is otherwise necessary a derating of the device or a forced
ventilation to avoid stagnation of air.
The controller, the unit and electrical connection must be protected
from fluids drips that could damage unit and cause short circuit.
Hydraulic Note
Electric/Manual valves in pump inlet/outlet circuit have to be
opened before TMFR/TSFR start-up. If the pump is equipped with
a relief valve (by-pass), the valve will work, in case of accidental
overpressure, in order to limit the peak pressure, by an internal
recirculation of the fluid. Thanks to the magnetic coupling the pump
does not need a mechanical seal in order to prevent leakage.
This eliminates the problems connected to the use of a mechanical
seal. The maximum pressure depends on the pump model and it
decreases with the increase of the flow rate.
The outlet pressure must not exceed 20 bar/290 psi in any case.
REPLACING THE PUMP
In order to replace the pump it is necessary to remove the three
screws on the front end of the motor. Once these screws are
removed it is sufficient to pull the pump back. During this operation
it is necessary to verify that the magnet cap does not make in
contact and damage the stator winding. The pump magnet is very
powerful, it is therefore important to keep it far from pacemakers,
credit cards, watches and all equipment sensitive to magnet fields.
It is also necessary to replace the pump in a clean environment,
as any magnetic particles in close proximity to the magnet will be
attracted from it and it might cause the pump to fail prematurely.
After each manipulation is necessary to re-conduct safety tests
(disconnecting controller), as prescribed in EN-60335 and
UL-1004, for this reason is recommended that operations are
conducted by Fluid-o-Tech qualified operators.
Содержание TMFE2
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