Walchem WDP340, Instruction Manual

Page: 15 / 51

12
Power Supply
(115 VAC or 230 VAC)
GROUND
STUD
L1 L2/N
G
R
N
1
20
V
G
R
N
/Y
E
L 2
40
V
WHT 120V
BLU 240V
B
L
K
1
2
0
V
B
R
N
2
4
0
V
+5V
T- T+
G
R
E
E
N
W
H
IT
E
/G
R
N
SHIELD
-5V IN+ IN-
O
R
N
W
H
IT
E
/O
R
N
B
L
U
W
H
IT
E
/B
L
U
WEL Electrode
Diffamp Housing
(102581, 102606,
102582,102607,
102758, 102759)
pH/ORP electrode
cartridge
L1 L2/N
L2 L2 L2 L2 L2 L2
BLEED
N.C. N.O. N.C.
BOI 1
N.O. N.C.
FEED
N.C.
BIO 2
N.O. N.C. N.O. N.O.
ALARM
N.C. N.O.
IN
+
IN
-
+5
V
-5
V
IN
-
D
IG
IN
2
D
IG
IN
3
IN+
IN-
DI
G I
N
1
IN
+
IN-
IN+
DI
G I
N
4
IN
+
IN
-
DI
G I
N
5
IN
+
IN
-
IN
+
IN
-
+5
V
-5
V
Contact Closure:
Polarity not critical
Interlock Function
IN-
DIG IN 2 DIG IN 3
IN+ IN-
DIG IN 1
IN+
IN-
IN+
DIG IN 4
IN+ IN-
DIG IN 5
IN+ IN-
+5V
T- T+
G
R
E
E
N
W
H
IT
E
/G
R
N
SHIELD
-5V IN+ IN-
O
R
N
W
H
IT
E
/O
R
N
B
L
U
W
H
IT
E
/B
L
U
WEL Electrode
Diffamp Housing
(102581, 102606,
102582,102607,
102758, 102759)
pH/ORP electrode
cartridge
SYSTEM A
SYSTEM B
TO GRND
SYSTEM A
SYSTEM B
Figure 3c WDP Inputs using WEL pH/ORP Electrode Housings