Fagor DDS Series, Hardware Manual

Page: 42 / 406

   Power supplies
2.
94
Ref.1912
DDS
HARDWARE
· 42 ·
Lights indicating the status of the main power supply
The non-regenerative power supply PS-25B4 has the following lights on the
front panel to indicate the status of the main power supply.
 FAULT BLINKING. The blinking red led indicates that there are no
errors and that one or several mains phases are missing .
 FAULT turned ON. The steady red led on indicates that there is an
error. The error is indicated on the display of the drives.
 FAULT turned OFF. The led off indicates that there is no error and that
all mains phases are OK.
 BALLAST turned ON. The amber led is lit when the energy dissipating
Ballast circuit is activated.
 DC BUS ON. The green led indicates that the module is supplying all its
power at the DC BUS.
Lights indicating the status of the auxiliary power supply
The non-regenerative power supply PS-25B4 has the following status
indicating lights on the front panel of the module for the integrated internal
auxiliary power supply.
 RESET. Initializes the auxiliary 24 V DC power supply.
 OVER VOLTAGE. The red led indicates that there is an over-voltage error
at the 24 V DC output or due to over-temperature.
 OVER CURRENT. The red led indicates that there is an over-current error
at the 24 V DC output.
 ON. The green led it indicates that there are 24 V DC at the output.
Ballast resistor selection
The non-regenerative power supply PS-25B4 had two switches on the front
and next to connector X1 (see figure) for selecting the external Ballast
resistor. If you still have a model like this one, refer to the attached table to
select the right resistor model according to the setting of the switches that
enables the ·I
2
t· protection.
Remember that selecting «protection disabled», internal resistor or RM-15
module means disabling the ·I
2
t· protection. The latter incorporate their own
thermostat for your protection.
For the switch combination shown in the figure and verified in the table, the
selected ballast resistor would correspond to the ER-18/1800 or ER+TH-
18/1000+FAN.
NOTE. The model with two selection switches has been discontinued. If
you still have this model, refer to this section to configure the selection of
the Ballast resistor. If you have the model with three switches, see the
next page.
T. H2/6 Layout of the Ballast resistor selector switches.
S2 S1 RESISTOR
ON ON
ER-18/1100
ON OFF
ER-18/1800 or ER+TH-18/1000+FAN
OFF ON
ER+TH-18/2200
OFF OFF
Protection disabled
Internal resistor or RM-15 module

represents, in the figure, the moving element of the switch.
Example
S2 S1 RESISTOR
ON OFF
ER-18/1800 or ER+TH-18/1000+FAN
Disc
ontinue
d model
PS-25B4
ON
S1
S2