Wiring Connection of Emerson EX3 Valve Wiring Diagram and Connections • 9
6.4.3. 4-Wire Valves (Bipolar)
45 BLUE WHITE BLACK
46 BROWN BLACK WHITE
47 BLACK RED RED
48 WHITE GREEN GREEN
6.4.4. 5- to 6-Wire Valves (Unipolar)
45 ORANGE ORANGE
46 RED RED
47 YELLOW YELLOW
48 BLACK BLACK
49 – Common GRAY GRAY
6.5. Wiring Connection of
Emerson EX3 Valve
XM678D and EX3 Connection
The EX3 valve integrates a solenoid valve with
positive shut off on the top and a stepper valve.
6.5.1. Solenoid Valve Connection
a. Verify the coil voltage of solenoid valve and ensure
that it is the same voltage with relay output.
b. Set oA1 or oA6 = E3r (solenoid coil of EX3). Any
other setting of the oA1 or oA6 parameter can
damage the solenoid valve.
c. With oA1 = E3r connect the solenoid valve to the
terminals 11-12.
d. With oA6 = E3r connect the solenoid valve to the
terminals 17-18.
6.5.2. EX3 with 24Vac Coil:
Transformer Capacity
When the coil of the EX3 is at 24Vac and a unique
transformer is used to supply both the controller and
the coil of the valve, a 40VCA transformer
must be
used like TF40D. Any transformer with lower
capacity can damage the valve or the controller.
Connection
numbering
ALCO EX4/5/6/7/8
SPORLAN
SEI-SEH-SER
DANFOSS
ETS
Table 6-4 - 4-Wire Valves (Bipolar)
Connection
numbering
SPORLAN SAGINOMIYA
Table 6-5 - 5- to 6-Wire Valves (Unipolar)
NOTE: After making the connection, switch the XM controller OFF and ON to make sure that the valve is
positioned properly.
NOTE: The solenoid coil will be energized
every time the temperature regulation is on and
de-energized when the temperature regulation
is off and during the standby of the controller.
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