HVAC400X – APPLICATION MANUAL
EN2B-0417GE51 R0719
12
Fig. 5. The control connection example for the relay board
You can also isolate the digital inputs (terminals 8-10 and 14-16) on the standard I/O board from ground. To do
this, set the dip switch on the control board to position OFF. See Fig. 6. The DIP switch to find the switches and to
make applicable selections for your requirements.
Fig. 6. The DIP switch
21
24
22
25
23
26
27
28
RO1/1 NF
RO2/1 NF
RO1/2 Com
RO2/2 Com
RO1/3 NO
RO2/3 NO
TI1+
thermistor input
TI1-
Terminal
Default
Signal
relay output 1
relay output 2
relay board
RUN
FAULT
from term.
#12
from term.
#13
from standard I/O board
digital inputs
floating
connected to GND (default!)
