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4. Description of control
4.1 General description
The control is integrated into the steam
humidifier and is operated via a 3.5" graphic
display on the front of the unit.
An additional operating element on the front
of the unit is a control switch, whose posi-
tions are assigned as follows:
Pos. "0": The unit is switched off
Pos. "I": The unit is switched on
Pos. "II": The cylinder water is pumped off
without the participation of the control. The
control is not active, the display remains
dark.
By changing the parameters, the user/opera-
tor can adapt the control to the system speci-
fications and the special characteristics
relating to the use of the unit.
The operation of the unit is described in Sec-
tion 6.
4.2 Layout of control
The control consists of the 3.5" screen and
the mainboard. The mainboard can be
extended for additional functions with one or
2 relay boards (with 3 relays each) and addi-
tional optional relays in DIN rail format.
The relay boards are connected to the main-
board via a plug system.
The DIN rail relays are connected via cables
with plug. 2 additional relay modules can be
used, with 2 relays each.
For use with double cylinder units, an exten-
sion board is added to the mainboard.
The fuse protection of the control voltage for
all boards with 2 x 2.5 A
Flink (F1, F2) takes
place on the mainboard.
The external circuitry for the control voltage
and the interlock (safety) system are con-
nected directly to the mainboard on plug ST1.
If additional boards are connected, the con-
nection moves from the mainboard to the out-
ermost board (see sketch).
Control switch
ST1
N
L
1
2
Relay
board
Main
board
ST1.1
ST1.2
ST1
Connections:
L, N: 230 VAC control voltage
1,2: Interlock (safety) system
ST1.1
