Wiring Diagram And Connections; Important Note; Valve Connections And Configuration - Emerson XM678D Manual

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
0.823
than or equal to 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!!!!!!
LSt
tEP Model
(steps*10)
0 Manual settings
Par
7
1 Danfoss ETS-25/50
2 Danfoss ETS-100 10
E.I. Connection of EX3. Verify the voltage of the coil of the shut off valve in the EX3 before connecting
1592023140 XM678D GB r2.8 01.09.2017.docx
uSt CPP CHd Sr tEu (bip/
(steps*10) (mA*10) (mA*10) (step/s)
Par Par Par Par
262 10 10 300
353 10 10 300
tEP Model
3 Danfoss ETS-250/400
4 Sporlan SEI .5 to 11
5 Sporlan SER 1.5 to 20
6
Sporlan SEI 30
7
Sporlan SER(I) G,J,K
8 Sporlan SEI-50
9 Sporlan SEH(I)-100
10 Sporlan SEH(I)-175
11 Emerson EX4/EX5/EX6
12 Emerson EX3
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
5-6 WIRES VALVES (UNIPOLAR)
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
Terminal 49
HSF
unip) (Half/full) Terminal 48
Par Par Terminal 47
bP FUL Terminal 46
Terminal 45
bP FUL
XM678D
LSt uSt CPP
(steps*10) (steps*10) (mA*10)
11 381 10
0 159 12
0 159 12
0 319 16
0 250 12
0 638 12
0 638 12
0 638 12
5 75 50
2 33 0
SPORLAN
ALCO
SEI-SEH-
EX4/5/6/7/8
SER
45 BLUE WHITE
46 BROWN BLACK
47 BLACK RED
48 WHITE GREEN
Connection
SPORLAN
numbering
45 ORANGE
46 RED
47 YELLOW
48 BLACK
49 – Common GRAY
EX3
Grey wire
Blue wire
Black wire
Brown wire
White wire
CHd Sr tEu (bip/ HSF
(mA*10) (step/s) unip) (Half/full)
10 300 bP FUL
0 200 bP FUL
0 200 bP FUL
0 200
bP FUL
0 200
bP FUL
0 200
bP FUL
0 200 bP FUL
0 200 bP FUL
10 500 bP FUL
uP HAF
0 50
DANFOSS
ETS
BLACK
WHITE
RED
GREEN
SAGINOMIYA
ORANGE
RED
YELLOW
BLACK
GRAY
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