Emerson Dixell IEV12D Installing And Operating Instructions page 27

Make sure that the technical documentation of the valve you need to use mentions control by half a
step, otherwise this will result in an incorrect control of the valve). An impulse is provided on one or two
phases in the suitable sequence based on the direction of rotation of the motor (aperture or closure).
The parameters related to the number of steps (maximum number of regulating steps, minimum number
of regulating steps, maximum number of steps per second, etc.) are expressed in full steps; during
setting phase, it is therefore necessary to pay attention that, for example, if the technical documentation
of the valve declares the number of steps per second = 90 half steps, the value to be written in the
corresponding parameter is 45 full steps per second.
Please, make attention that the reference documentation for the configuration of these parameters is
the technical documentation of the valve, in which must be specified if the data relating to the steps are
expressed in full steps or half steps.
7.3.1 Valve selection
All relevant parameters of the valve must be set manually.
7.3.2 Parameters to set in the event of manual configuration of the valve
Ec13/Ec22 maximum number of steps of valve
Refer to the technical documentation of the valve to set this parameter correctly.
(this value is set automatically by the controller if EC9> 0 and / or EC18> 0)
Ec14/Ec23 minimum number of valve steps
Refer to the technical documentation of the valve to set this parameter correctly.
(this value is set automatically by the controller if EC9> 0 and / or EC18> 0)
7.3.3 How to connect the valve
Observe the table below for quick reference to the connection mode of valves deriving from different
manufacturers:
NOTE:
•
Do not connect or disconnect the valve while the device is connected to the power;
this operation may result in the breakdown of the device
•
Set the programming of the configuration parameters before connecting the valve; the
connection of a valve with features not compatible with the setting in the device can
result in a failure of the device or to the valve
•
Carefully read the technical manual supplied by the manufacturer of the valve before
using the driver in order to prevent changing the data, and verify that the declared
colours comply with those in the table below.
1592026270 IEV12-14D GB r.1.0 21.02.2019 IEV 28/56