2 - Fagor Automation

Installation
8.
INSTALLATION
Connection between modules
312
DDS
HARDWARE
Ref.1307
286
How to install an external Ballast resistor with an external 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.
Always install it vertically
Ballast resistor connection
terminals.
Diagram
Re L+
Re L+
External
thermostat
200°C
Element to connect with
the external thermostat
External thermostat
Take 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.
Tk
Tk
+ 24 V DC
PLC INPUT
Take 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.
F. H8/15
Installing the external Ballast resistor with internal thermostat and with no
fan.