HygroMatik HPS250, Руководство по эксплуатации

Страница: 37 / 92

Page 37
11.4 Expansion board
The expansion board provides - besides fur-
ther inputs - additional relays for the switch-
ing of the water intake solenoid valve and the
3
rd
load (the 1
st
load is selected by default
when humidification starts, the 2
nd
load is
switched on the main board). In case of a
combined system, only 3 loads can be
switched. The relay contacts on „ST04“ are
then used for switching the supply air humidi-
fication - in the 1
st
load.
ST1.1
ST07
ST08
ST1.2
ST
06
ST04
ST03
ST02
-A
ST02-B
ST05
DIP switch
On
1
2 Off
Off
*)
OF
F
CA
N T
E
RM
ON
CAN TE
R
M
OF
F
ON
CAN-bus termination
*)
The DIP switches
serve for CAN-bus address setting. They are factory preset according to the unit configuration. When replacing an ex-
pansion board, ensure the identical setting is made as it was before.
**)
The jumper for the CAN-bus termination is in the „ON“ position only on the lowest pc board of the assembly. The
termination is then effective. On the expansion boards that may be attached in higher mounting positions, the correct
jumper setting is „OFF“ (in a standard configuration, only one expansion board is present, the jumper of which then
must be set to the „ON“ position).
**)
3
rd
load solenoid
1st load solenoid
(combined system
valve
water inlet
solenoid valve
valve
only)