1592025980 XEV20D GB r.2.7 31.07.2019
XEV20D
2/5
3.
GENERAL RULES
Comply with the following recommendations during the installation process in order to
prevent the device from malfunctioning.
➢
Separate the signal cables from the power cables (it is recommended to use
BELDEN 8772-type shielded cables).
➢
Separate the cables of the analogue inputs from those of the digital inputs and
the serial line cables from the power cables (resistive as well as inductive), in
order to prevent malfunction due to electromagnetic interference.
➢
Separate the power of the device from that of the other electrical components.
➢
Never connect the secondary of the supply transformer to the earth.
➢
The low voltage connections must have reinforced insulation.
4.
INSTALLATION AND MAINTENANCE
XEV20D is a slave device, which means that it receives commands from another
“master” device; in particular, instructions are given by an iPro controller through a
CANBUS (10DIN version) or LAN (4DIN version) connection.
Operating parameters are sent by an iPro and then they are stored in a special
retentive memory area inside the driver.
The necessary parameters for operation are:
This memory stores the values of the following parameters:
1)
valve type
(0= disabled valves; 1= both unipolar valves / 2= both bipolar
valves and Wavemode type of command; 18 = both bipolar valves and
Normal mode type of command)
2)
valve 1 step rate
(expressed in tens of ms 16-10000)
3)
valve 2 step rate
(expressed in tens of ms 16-10000)
4)
valve 1
maximum number of steps
(0-8500)
5)
valve 2 maximum number of steps
(0-8500)
6)
valve 1 movement current
(0-100 *10mA)
7)
valve 2 movement current
(0-100 *10mA)
8)
valve 1 maintenance current
(1-100 *10mA)
9)
valve 2 maintenance current
(1-100 *10mA)
10)
unipolar valve 1 configuration
(Current/ no current with valve in position
– adjustment steps expressed in whole steps/half steps)
11)
unipolar valve 2 configuration
(Current/ no current with valve in position
– adjustment steps expressed in whole steps/half steps)
Whenever the master device (iPro) tells the driver a new value for one
of the aforementioned parameters, the driver itself proceeds with the
complete closure of the valve.
The XEV20D drivers issued by Dixell are tested but not configured: this means that
the parameters in the fla
sh memory are set to a default value (specifically, the “valve
type” parameter = 0).
4.1 VALVES CONNECTIONS TABLE
Read carefully the table below to learn how to connect valves produced by different
OEMs:
4-WIRE VALVES (BIPOLAR)
Terminal number
ALCO
EX*
ALCO
EX5/6
SPORLAN
SEI-SHE
DANFOSS
ETS
4
WHITE
BLUE
WHITE
BLACK
2
YELLOW
BROWN
BLACK
WHITE
3
BROWN
BLACK
RED
RED
1
GREEN
WHITE
GREEN
GREEN
5
– Common
----
-----
-----
-----
5-WIRE VALVES (UNIPOLAR)
Terminal number
SPORLAN
SAGINOMIYA
4
ORANGE
ORANGE
2
RED
RED
3
YELLOW
YELLOW
1
BLACK
BLACK
5
– Common
GREY
GREY
The maximum distance between a XEV valve driver and the valve
must not exceed
10 meters
;
shielded cables
with a section greater than or equal to 0.325 mm²
(AWG22) must be used.
4.2 DRIVER POWER-ON
At power-on XEV20D reads the parameters in the flash memory.
At this point:
•
If “valve type” = 0, no action is taken on the valve and both “PWR ON” and
“ALARM” leds remain on steady.
•
If “valve type” ≠ 0, the driver itself commands the complete closure of the valve.
During this phase the
“Close” led blinks.
Once the valve has been closed (the “Close” led remains on steady), the driver waits
to receive instructions from iPro.
4.3 IPRO+XEV20D TESTING PROCEDURE
During the first connection, the replacement of a valve body or the first test of a unit, it
is necessary to follow the procedure below:
1.
Disable any unit adjustment;
2.
Cut off power to the whole unit;
3.
Disconnect the connector dedicated to valve wiring.
4.
In case the connection of the valve body involves the modification of its
operating parameters, proceed as follows:
a.
Power the unit, disconnecting the body valve from XEV20D.
b.
Set the new parameters of the valve using the iPro application.
c.
Remove power from the unit.
5.
Connect the body valve to XEV20D driver.
6.
Power the unit.
Valve wires must not be connected or disconnected, whenever the
driver is powered. This action may damage the driver and the valve
windings.
“PWR ON” and
“ALARM” leds
“Open” and
“Close” leds
Valve 1 and 2
terminals