10/02/22
User Manual HPS/P/20kVA 6200591_01_
18
HPS can work with network voltage variations of
10%, if these limits are exceeded HPS stops and
the led concerning the occurred alarm blinks, in this case HPS can be unblocked by means of the
button HARDWARE RESET or switching off and switching on the machine.
If the network voltage is too low HPS stops and the led
UNDERVOLTAGE
is lit.
If the network voltage is too high HPS stops and the led
OVERVOLTAGE
is lit.
2.8.2.
SYSTEM ALARMS
In case of high temperature on the inside of HPS (more than 70°C) this one stops and the led
TMAX
is lit; to set again the machine, work as for the loading alarms.
In case of bad operations of the overload sections (inverter) HPS stops and the led
INVERTER
is lit.
2.8.3.
CURRENT ALARM
HPS works a control of the output current and this allows it to support for an indefinite time the
output short circuit. In case of loads that absorb a current superior than the nominal one HPS
works a limitation of the same current.
This limitation is visualized by means of the led
LIMIT OUT
at the voice
CURRENT
.
If the machine is in slave configuration this alarms are not significant
In case of current limitation the output sinusoidal wave is no more guaranteed and so it will show
an harmonic distortion.
Not linear loads with an overload less than the nominal one but with a very high crest factor
current allow the current defence. Notice that if someone is working by limitation current HPS
keeps the effective value of the output voltage equal to the set off value until the led concerning
the voltage alarm switches on (see at VOLTAGE ALARM).
2.8.4.
VOLTAGE ALARM
HPS, beyond the output distortion control, woks a control of the effective value of the output
voltage either in the configuration 2 wires or in the configuration 4 wires. If the output voltage is
not equal to the set off one a signal of error is visualized by means of the led
MAX
V
at the voice
VOLTAGE.
This kind of alarm does not cause any block to HPS.
If the machine is in slave configuration this alarms are not significant
2.9.
PARALLEL OPTION
2.9.1.
TURN ON
Down the steps you have to do to turn on of the system
1.
Keep the machines off with the contacts 1.7 and 1.8 of all the machine.
2.
Setup the machines master/slave with the contact 1.1 and 1.2 .
3.
Close the contacts (1.7 and 1.8), when the machines are ON the change of the command master
slave is disabled.
4.
Set the mode of the machines (remote, range, sensing). You have to set only the master
machines.
5.
Enable the lines.
6.
The system is ready for the voltage frequency ramp.
