17
Pump(s)
Alarm
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.
L2/N
L2/N
L2/N
L2/N
L2/N
L2/N
CTRL 1
+
-
N.C.
CTRL 3
-
+
CTRL 2
N.C.
CTRL 4
N.O.
N.C.
N.O.
N.O.
ALARM
N.C.
N.O.
GROUND
STUD
F1
GRN 120V
GRN/YEL 240V
W
H
T
120V
BL
U
24
0V
BL
K 1
20V
B
RN 24
0
V
FUSED EXTERNAL
POWER SOURCE
Note: Alarm is a dry contact relay
(polarity not critical).
Note: The Alarm relay is not programmable.
Refer to the Main Menu diagram for the list of
error conditions that trigger the Alarm relay.
EXTERNAL
AC POWER
EXTERNAL
AC POWER
Note: Wire “COM” terminal of the external
control input of the pump to the “negative”
terminal of the controller.
+5V
BL
K
RED
CO
N
D
T-
T+
Chart
Recorder
Chart
Recorder
IN
-
FLO
W
MT
R 1
FL
OW
M
T
R 2
IN
+
FL
OW
SW
1
IN
+
IN
-
IN
+
FL
O
W
SW
2
IN
-
IN
+
+5
V
BL
K
RE
D
CO
ND
T-
T+
EXTERNAL
AC POWER
EXTERNAL
AC POWER
Figure 4d WDP440 Outputs
