Nordmann Engineering AT4 D SPA Display, Service Manual

Page: 32 / 36

32
6.2 Block diagram power board
D
riv
er
bo
ar
d
A
T4 D
D
riv
er
bo
ar
d
ex
ten
si
on
AT
4
(opt
ion
al
,d
oubl
e
uni
t)
FAN
1
Fi
ll
Va
lv
e
D
rai
n
Pum
p
S
C
S
ys
te
m
M
ai
n
cont
ac
ts
ingl
e
uni
t
Max .S ensor
E
lec
trod
e
Max .S ensor
E
lec
trod
e
Fill
V
alv
e
D
rai
n
Pum
p
SC
Sy
st
em
M
ai
n
cont
ac
t
doubl
e
uni
t
M
ax
S
ens
or
M
ax
S
ens
or
Fu
se
C
urr
ent
S
ens
or
C
ur
rent
S
ens
or
>6 0°
M
ai
nS
w
itc
h
J1 Driverboard
1
DI
S
A
FE
TY
CHA
IN1
AIL
IM
IT
1
AI
CO
NT
RO
L1
O
P
UM
P
CO
NT
RO
L1
O
RE
SE
RV
E3
2
B
RD1
O
IN
LE
TV
A
LV
E1
DO
S
CL
CY
LI
NDE
R1
IRE
S
E
RV
E
22
B
RD1
D
IS
C
A
LE
B
A
G
1
DI
O
S
DA
CY
LI
NDE
R1
DI
A
UX
L
EV
S
ENS
O
R1
O
CURRE
NT
S
EL
E
CT
1
AI
DRA
IN
O
V
E
RF
L1
D
IL
EVE
L
SEN
SO
R
1
O
DRA
IN
VA
LV
E1
+
24V
1_F
O
L
IM
IT
S
E
LE
C
T1
AI
CURRE
NT
1
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
31 32 33 34 35
36 37 38 39 40
+5
V
R
S
485
D

RS
48
5
D+
G
ND
DI
B
LO
W
E
R
PA
CK
1
O
M
AI
N
CO
NT
A
CT
1
O
CO
NT
RO
L
S
EL
E
CT
1
O
T
VA
LVE/
VO
R
TEX1
O
RE
SE
RV
E3
3
B
RD1
IRE
S
E
RV
E
35
B
RD1
IRE
S
E
RV
E
36
B
RD1
IRE
S
E
RV
E
37
B
RD1
I/O
RE
SE
RV
E3
8
B
RD1
I/O
RE
SE
RV
E3
9
B
RD1
I/O
RE
SE
RV
E4
0
B
RD1
C
PU
BO
AR
D
J3
O
IN
LET
VA
LV
E2
O
C
URRE
NT
S
E
LE
CT
2
A
IV
E
R
S
IO
N
D
IL
EV
EL
S
EN
SO
R
2
O
D
R
AI
N
VA
LVE2
+
24
V
1_F
A
ICURRE
NT
2
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
+5V
GN
D
O
M
A
IN
CO
NT
ACT
2
O
S
C
P
UM
P2
DI
B
O
A
RD2
R
EL
4
PW
R
_L1_
S
W
R
EL
3
PW
R
_L1_
S
C
+24V
1_
F
IN
LET
V
AL
VE
DRA
IN
PUM
P
X4
N_
S
W
1 2 3 4
X11
Cont rolS ignal
JP3
+5V _F
+24V 1_F
X10
3
2
1
2
1
Lim itti ngSi gnal
V
+
IN
GN
D
IN
GN
D
3
2
1
X1
6
5
4
L1
N
S
C
1
SC
2
P
E
PE
Fn
180
–
253V
A
C
/
50/
60H
z
F1
3
2
1
X2
4
3
2
1
X6
4
N_S W
L1_SW
N
L1
PE
PW RL 1F U
PWR N
PW RL 1S W
PW RN SW
N_S W
L1_SW
L1_SC
PW RL 1S W
PWR L1 SW
PW RN SW
PWR N
PW RL 1S C
PW RL 1S C
Suppl
y
G
en
erat
ion
PW R_L1_S C
AC
DC
PW R_L1_ SW
PW R_N_ SW
U
in
:
180
–
253
V
AC
F3
+
24V
+24V
1_F
??
m
A
5V
S
uppl
y
G
ener
at
ion F4
+5V
_F
CO
NT
.S
IG
N
V+
IN
G
ND
LIM
.S
IG
N
IN
G
ND
+
V+
IN
G
ND
P
/PI
140.
..10
k
V+
IN
G
ND
ON
OF
F
+
P
/PI
J
P3:
OUT
2
4V
set
zen.
A1 A2 A3
A4
m
ax.
ϕ
p
B3 B2
J
JP
3:
OU
T
5V
se
tzen.
B1
F2
200mAF
+24V
1_F
R
EL
2
PW
R
_L1_
S
C
O
M
AI
N
CO
NT
ACT
1
X3 1 2
+24V
1_F
N
_S
W
R
EL
2
PW
R
_L1_S
W
O
S
C
P
UM
P
1
X1
5
1 2
+24V
1_F
N
_S
W
X5 1 2
C
ur
rent

m
eas
ur
em
ent
Lev
el
S
ens
or
R
EL
4
PW
R
_L1_
S
W
R
EL
3
P
W
R
_L1_
S
C
+24V
1_
F
IN
LET
V
AL
VE2
DR
AI
N
PUM
P2
X2
4
N_
S
W
1 2 3 4
+24V
1_F
R
EL
2
P
W
R
_L1_
S
C
O
M
AI
N
CO
NT
ACT
2
X2
3
1 2
+24V
1_F
N
_S
W
R
EL
2
PW
R
_L1_S
W
O
SC
PU
M
P
2
X2
7
1 2
+24V
1_F
N
_S
W
X2
5
1 2
C
ur
rent

m
eas
ur
em
ent
Lev
el

Sens
or
3 2 1
X6
4
PE
N_
S
W
L1
_S
W
L1_S
C
PW
R
_L1_S
C
PW
R
_L
1_S
W
N
_SW
PE
FAN
2
>60°
X12
+24V 1_F
GND
G
ND
+24
V1_F
X1
2
+24V
1_
F
GN
D
G
ND
+24V
1_F
+5V
+5V
123
+5V
+5
V
1 2 3
3
2
1
X13
4
G
ND
RS 485D +
+24V _F
R
15k
R
120
E
R
15k
GN
D
+24V
1_F
+24V 1_F
GND
+24V 1_F
GND
RS 485D 
Ne
two
rk
Re
m
ot
e
CP
U
T
ouc
hpa
nel
To
X13,
1
To
X13.
2
JP
5
JP4
JP6
JP
7
??m
A
+5
V
5 +5V _F
+5V _F