TECO F33 Series, Instruction Manual, Page: 24 / 192

Control Connections 21
4. Control Connections
4.1 Control board
Fig. 28 shows the layout of the control board which is
where the parts most important to the user are located.
Although the control board is galvanically isolated from
the mains, for safety reasons do not make changes
while the mains supply is on!
Fig. 28 Control board layout
WARNING: Always switch off the mains
voltage and wait at least 5 minutes to allow
the DC capacitors to discharge before
connecting the control signals or changing
position of any switches. If the option External supply is
used, switch of the mains to the option. This is done to
prevent damage on the control board.
X8
X2
X3
X1
S2 S1 S3 S4
X5
X4
X6 X7
U
I I
U U
I
I
U
1
12 22
11
41 42 43
31 32
33
51 52 2 3 4 5 6 7 8 9 10
13 14 15 16 17 18 19 20 21
AO1 AO2
DI4
DI5
DI6 DI7 DO1 DO2 DI8
+24V DI3 DI2 DI1 -10V AI4 AI3 AI2 AI1 +10V
NC
NC
NO
NO NO
C
C C
R01
R02
R03
3 2 1
C
Relay outputs
Control
signals
Switches
Option
Control
Panel
Communication