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Connecting a Pump Control
Caution: Do not be connect the controller directly to the pump motor or starter. A 24 VAC isolation relay; i.e.,
!
Irritrol SR-1 Pump Start Relay (or equivalent), must be used to facilitate the pump control circuit connection.
Install a 24 VAC pump start or
1.
equivalent isolation relay. Route
and connect a control wire and
a common wire from the Pump
terminal of the Pump/Master Valve
terminal block to the relay. See
Figure 7.
Connect the remaining pump
2.
wiring per the instructions
provided by the pump equipment
manufacturer.
!
Caution: If multiple
controllers are utilized within
the irrigation system, do not
interconnect the controllers'
field common, pump or
master valve wires. Damage to
27 28 29 30
31 32 33 34
the controllers can result.
Note: Contact technical support
at 1-800-777-1477 for information
regarding multiple-controller wire
connections.
Connecting Sensors
The DXi controller provides connection terminals for two flow sensors at the bottom of the WOB. One terminal is
marked FLOW1, the other FLOW2 (see Figure 8).
Caution: To prevent damage to the controller and/or sensor equipment,
!
turn off power to the controller prior to connecting sensor wires.
Installation Notes:
3
4
5
6
7
The ALARM terminal is
•
not used.
The sensor connection
•
terminals accept 16–28
AWG (1,5mm
2
solid-core copper wire.
To enable positive wire
retention, insulation must
be removed from the end of
each wire to expose 3/8 –1/2"
(10–13mm) bare copper
wire.
Flow sensor wires have
•
specific polarity that must
be maintained for proper
operation of these devices.
Note the GND indicators
on each sensor connection
terminal and connect
accordingly.
Figure 7
MV / PUMP
TERMINAL BLOCK
VC/
COM
35 36
VC/
8
9
10 11 12
COM
–0,08mm
)
2
Figure 8
25 26
27 28 29 30
MV/
PUMP
1
2
3
4
5
PUMP POWER
VC/
COM
37 38
39 40 41 42
COMMON
VC/
COM
13 14
15 16 17 18
VC/
VC/
31 32 33 34
35 36
COM
COM
37 38
39 40 41 42
VC/
VC/
6
7
8
9
10 11 12
COM
COM
13 14
15 16 17 18
SOURCE
43 44 45 46
PUMP
19 20 21 22
43 44 45 46
47 48
19 20 21 22
23 24
Relay - 24 VAC,
0.5A Max.
PRESSURE SWITCH
(OPTIONAL)
47 48
23 24
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