Emerson XM678D - Wiring Diagram and Connections; Important Note; Valve Connections and Configuration

1592023140 XM678D GB r2.8 01.09.2017.docx XM678D 2/15
6. WIRING DIAGRAM AND CONNECTIONS
6.1 IMPORTANT NOTE
XM device is provided with disconnectable terminal block to connect cables with a
cross section up to 1.6 mm
2
for all the low voltage connection: the RS485, the LAN, the
probes, the digital inputs and the keyboard. Other inputs, power supply and relay
connections are provided with screw terminal block or fast-on connection (5.0 mm).
Heat-resistant cables have to be used.
Before connecting cables make sure the power supply complies with the instrument’s
requirements. Separate the probe cables from the power supply cables, from the
outputs and the power connections. Do not exceed the maximum current allowed on
each relay, in case of heavier loads use a suitable external relay. N.B. Maximum
current allowed for all the loads is 16A. The probes shall be mounted with the bulb
upwards to prevent damages due to casual liquid infiltration. It is recommended to
place the thermostat probe away from air streams to correctly measure the average
room temperature. Place the defrost termination probe among the evaporator fins in
the coldest place, where most ice is formed, far from heaters or from the warmest place
during defrost, to prevent premature defrost termination.
6.2 XM678D
6.3 VALVE CONNECTIONS AND CONFIGURATION
6.3.1 Type of cables and max lenght
To connect the valve to the controller, use only shielded cables with section greater
than or equal to 0.823 mm² (AWG18).
A twisted shielded cable with the the above specification is suggested.
Don’t connect the shield to any ground, live it floating.
The max distance between an XM controller and a valve must not exceed 10 m.
6.3.2 Valve selection
To avoid possible problems, before connecting the valve configure the driver by making
the right changes on the parameters.
a. Select the kind of motor (tEU parameter)
b. Check if the valve is present in tEP parameter table reported here below.
 CHECK THE FOLLOWING TABLE FOR A RIGHT SETTING 
!!!!! In any case, the unique and valid reference has to be considered the
datasheet made by valve manufacturer. Dixell cannot be considered responsible
in case of valve damaging due to wrong settings!!!!!!
tEP Model
LSt
(steps*10)
uSt
(steps*10)
CPP
(mA*10)
CHd
(mA*10)
Sr
(step/s)
tEu (bip/
unip)
HSF
(Half/full)
0
Manual settings
Par Par Par Par Par Par Par
1
Danfoss ETS-25/50
7 262 10 10 300
bP FUL
2
Danfoss ETS-100
10 353 10 10 300
bP FUL
tEP Model
LSt
(steps*10)
uSt
(steps*10)
CPP
(mA*10)
CHd
(mA*10)
Sr
(step/s)
tEu (bip/
unip)
HSF
(Half/full)
3
Danfoss ETS-250/400
11 381 10 10 300
bP FUL
4
Sporlan SEI .5 to 11
0 159 12 0 200
bP FUL
5
Sporlan SER 1.5 to 20
0 159 12 0 200
bP FUL
6
Sporlan SEI 30
0 319 16 0 200
bP FUL
7
Sporlan SER(I) G,J,K
0 250 12 0 200
bP FUL
8
Sporlan SEI-50
0 638 12 0 200
bP FUL
9
Sporlan SEH(I)-100
0 638 12 0 200
bP FUL
10
Sporlan SEH(I)-175
0 638 12 0 200
bP FUL
11
Emerson EX4/EX5/EX6
5 75 50 10 500
bP FUL
12
Emerson EX3
2 33 0 0 50
uP HAF
If you can see your valve on the table, please select the valve through tEP parameter.
In this way, you can be sure of a right configuration. About the connection, please pay
attention to the following table to have a quick reference on the connection mode for
valves of different manufacturer
4 WIRES VALVES (BIPOLAR)
Connection
numbering
ALCO
EX4/5/6/7/8
SPORLAN
SEI-SEH-
SER
DANFOSS
ETS
45
BLUE
WHITE
BLACK
46
BROWN
BLACK
WHITE
47
BLACK
RED
RED
48
WHITE
GREEN
GREEN
5-6 WIRES VALVES (UNIPOLAR)
Connection
numbering
SPORLAN SAGINOMIYA
45
ORANGE
ORANGE
46
RED
RED
47
YELLOW
YELLOW
48
BLACK
BLACK
49
–
Common
GRAY
GRAY
AFTER MAKING THE CONNECTION, PLEASE SWITCH OFF AND ON THE
CONTROLLER IN ORDER TO BE SURE OF THE RIGHT POSITIONING OF THE
VALVE.
6.4 WIRING CONNECTION OF EMERSON EX3 VALVE
XM678D AND EX3 CONNECTION
The EX3 valve integrates a solenoid valve with posisitive shut off on the top and a
stepper valve.
Verify the coil voltage of solenoid valve, and connect it to the main line.
6.4.1 EX3 with 24Vac coil: transformer capacity.
When the coil of the EX3 is at 24Vac and a UNIQUE transformer is used to supply
botht the controller and the coil of the valve, a 40VA transformer must be used, like
TF40D. Any transformer with lower capacity can damage the valve or the controller
6.4.2 Stepper valve connection
The EX3 unipolar valve has to be connected to the following terminals.
XM678D
EX3
Terminal 49 Grey wire
Terminal 48 Blue wire
Terminal 47 Black wire
Terminal 46 Brown wire
Terminal 45 White wire
E.I. Connection of EX3. Verify the voltage of the coil of the shut off valve in the EX3 before connecting