Fagor DDS Series, Hardware Manual

Page: 280 / 406

   Installation
8.
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Ref.1912
DDS
HARDWARE
How to install AN exter nal Ballast resistor with inter nal
thermostat and with no fan
WARNING. On top of the ER+TH modules, the air temperature can reach
values over 120°C/248°F. Therefore, the resistor should be mounted away
from the rest of the modules or even outside the electrical cabinet, always
vertically and away from cables and other temperature sensitive material.
F. H8/14
Installing AN external Ballast RESISTOR with internal thermostat and with
no fan.
Ballast resistor connection terminals.
Tk connection terminals of
the internal thermostat.
Always install it vertically
Re
L+
Diagram
Connect as shown in the image either one of
the two pins to + 24 V DC of the external power
supply of the electrical cabinet and the other
one to a PLC input.
Important. Remember to manage the chosen
PLC input in the PLC program to generate an
error when exceeding the limit temperature
(160°C) detected by the sensor and to open
the contact.
Connect as shown in the image the Ballast resistor terminals to the Re and L+
terminals of the terminal strip of the Ballast of the power supply or compact
drive accordingly.