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Chapter Eight - Control Unit
The previous chapters have presented components needed to make RITS work. The hydraulic
system is designed; however a system that controls the hydraulic system is required. This
chapter will explain how the RITS will be controlled by use of telemetry and other
communication components.
7.1
Valve pack - Control Systems 37
A valve pack is custom designed RCU for the rest of the system in RITS, except for the
torque tool. The solenoid valves are positioned in a row with a control card (PWM16) on top.
This control card is called an embedded control unit, and controls which solenoid valve that
will opens the hydraulic line.
•
The control card will send an electric signal to a
spring force in the
magnet that will overcome the
solenoid.
•
The solenoid valve will only open the hydraulic line
•
The electricity and the hydraulic lines will at all times be connected to the valve pack,
just waiting for signal to be activated.
Figure 67: Picture of a valve pack from Innova [Source 37]
37
(Innova, 2014)
70
that it is connected to.