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5. MAXIMUM POWERS ALLOWED
XEV20D can control a large variety of motorized valves. The table below shows the
maximum current values that the valve windings can absorb. Select the transformer
that is suitable for the application on the basis of that shown in the table. The type of
DIXELL transformer to use is indicated for every operating mode.
NOTE: carefully read the technical manual supplied by the manufacturer of the
valve body before using the driver in order to prevent changing the data
provided by the manufacturers of the valves, and verify that the required
currents are lower than those shown in the table below in order to prevent
damaging the control module.
DRIVE MODE
BIPOLAR Valves
Current
(4 wires)
UNIPOLAR valves
Current
(5-6 wires)
6. SPECIFICATIONS
6.1 ANALOGUE INPUTS
Number of inputs:
4
Type of analogue input:
Inputs 1 and 2:
NTC (-50T110°C; 10KΩ at 25°C)
(configurable via software
PTC (-55T115°C; 990Ω at 25°C)
parameter)
PT1000 (-50T100°C ; 1K Ω at 0°C)
Inputs 3 and 4:
NTC (-50T110°C; 10KΩ at 25°C)
PTC (-55T115°C; 990Ω at 25°C)
PT1000 (-50T100°C ; 1K Ω at 0°C)
In voltage: 0 to 5V (input resistance 3.7KΩ)
In current: 4 to 20 mA (input resistance 100Ω)
Precision (at 25°C):
NTC, PTC, PT1000: ±1°C
0-5V: ±100mV
4-20mA ±0.30mA
Measurement and
-50°C ÷ 110°C (-58 °F ÷ 230°F) NTC probe
adjustment field:
-50°C ÷ 150°C (32 °F ÷ 302°F) PTC probe
-50°C ÷ 100°C (32 °F ÷ 212°F) PT1000 probe
-0 bar ÷ 50 bar (0 psi ÷ 302 psi) pressure probe
Resolution
0.1 °C
1 °F
0.1 bar
6.2 DIGITAL INPUTS
Digital inputs can be configured via software as digital inputs:
Type:
Non opto-insulated potential free contact
(configurable via software
Max cable length 10m
parameter)
Number of inputs:
4
Notes:
Do not use live contacts in order to prevent the
instrument from being damaged.
6.3 ELECTRICAL SPECIFICATIONS
Power Supply:
24Vac/dc
Consumption:
Max. 10VA
Connectors:
Molex connectors with wiring for low voltage (power
supply, probes, digital inputs, analogue outputs)
STELVIO quick coupling screw connectors for low
voltage (LAN)
STELVIO quick coupling screw connectors for relay
outputs (250Vac, 6A max)
6.4 PLASTIC CONTAINER
Assembly:
On a DIN rail (EN 50022, DIN 43880)
Fastened with screws via the removable plastic
flaps.
Material:
PC-ABS Thermoplastic
Self-extinguishing:
V0 (UL94)
Comparative Tracking
300V
Index (CTI):
Colour:
Black
Frontal protection:
IP20
1592025980 XEV20D GB r.2.7 31.07.2019
CONFIGURATION
ONE VALVE
TWO VALVES
Entire step
Entire step
0.9A max
Current
0.9A max
per valve
→ TF20D
→
TF40D
0.33A max
Current
0.33A max
per valve
→ TF20D
→ TF20D
-10% ÷ 10%, 50/60Hz
6.5 OPERATING CONDITIONS
Operating temperature:
Storage temperature:
Relative humidity:
7. WIRING DIAGRAMS
7.1 VERSION FOR ONE VALVE
If the power
supply is Vdc,
follow
the
polarity
as
shown below:
Pin 1 = +
Pin 7 = -
7.2 VERSION FOR TWO VALVES
If the power
supply is Vdc,
follow
the
polarity
as
shown below:
Pin 1 = +
Pin 7 = -
XEV20D
-10°C ÷ 60°C
-30°C ÷ 85°C
20% ÷ 85%
Battery
16 17
+In
gnd
Battery
16 17
+In
gnd
3/5
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