Motortech VariStep3, Руководство по эксплуатации

Страница: 37 / 92

7 Functions
Rev. 08/2018 37
7.3 Open/Closed Positions
The Open and the Close position are specified as follows:
– Open : The throttle or the openings for gas supply of the gas mixer are fully opened
(100 % open).
– Closed : The throttle or the openings for gas supply of the gas mixer are fully closed
(0 % open).
When one of the two positions is reached, the respective binary output Open or Close is
switched and the corresponding LED lights up. The connected devices cannot be moved beyond
these two positions and all corresponding signals are limited.
7.4 Configurable Opening Angles (Position 1 and 2)
The MICT can be used to configure two opening angles, and these openings can be controlled
directly via binary inputs (
Pos. 1 , Pos. 2 ). If the signals Pos. 1 and Pos. 2 are simultaneously
present, position 1 will be approached. When the stepper motor reaches one of the two
positions, the respective binary output (
Pos. 1 , Pos. 2 ) is switched and the corresponding LED
lights up. In this way, you can define the opening angles for certain operating states such as
starting or purging the gas engine.
You can configure positions 1 and 2 with the MICT. For further information, refer to the section
Positions – Values on page 59.
7.5 Change of Opening Angles via Binary and Analog Inputs
In automatic mode the opening angle can be controlled directly via the following inputs.
–
Binary inputs
Dir
and
Steps
–
Analog voltage input 0-10 V
–
Analog current input 0-20 mA
–
Field buses CAN and Modbus
Depending on which master control you are using, you can select the required input using the
MICT. If one of both end positions (
open or closed ) has been reached, the signals are limited at
the inputs in the corresponding direction.
You can configure the inputs with the MICT. Refer to the section Inputs/Outputs – Control Setup
on page 56.