cyber
®
reaction wheel 2
Project planning guide
Revision: 02
Doc. no.: 5022-D060586
en-1
Contents
1
About this manual
1
1.1
Signal words
2
1.2
Safety symbols
3
1.3
Structure of the safety information
3
1.4
Information symbols
3
2
Product characteristics
4
2.1
cyber
®
reaction wheel 2
5
2.1.1
Type code
5
2.1.2
Name plate
6
2.1.3
Packaging and scope of delivery 6
2.1.4
System characteristics
7
2.1.4.1
DC power, torque and speed
7
2.1.4.2
Control characteristics
8
2.1.5
Electrical data
8
2.1.5.1
Pin assignment of connector A
9
2.1.5.2
Pin characteristics of connector A
9
2.1.5.3
Use of digital IOs
10
2.1.6
Control and setpoint selection of
the reaction wheel
11
2.1.7
Ensuring availability of the
reaction wheel
11
2.1.8
Environmental conditions
12
2.1.9
Vibration/shock
12
2.1.10
Electromagnetic Compatibility
(EMC)
12
2.2
cyber
®
reaction wheel starter kit
13
2.2.1
Type code
13
2.2.2
Intended use
13
2.2.3
Packaging and scope of delivery 14
2.2.4
Structure
15
2.2.5
Electrical interfaces
16
2.2.5.1
A: USB port
16
2.2.5.2
B: Application interface
17
2.2.5.3
D: Interface to reaction wheel
18
2.2.5.4
E: Supply voltage
18
2.2.6
LEDs
19
2.2.7
Application notes
19
2.2.7.1
Setting the supply voltage
20
2.2.7.2
Provision of V-IO for the logic
blocks on the starter kit
20
2.2.7.3
Integration of digital IOs
20
2.2.7.4
UART switching
21
2.2.7.5
Brake chopper: Dissipation of
recuperation energy
21
2.2.8
Environmental conditions
22
2.3
Graphical user interface cyber
®
reaction wheel assistant
23
2.3.1
Installation of the cyber
®
reaction
wheel assistant
23
2.3.2
CHM-Help
23
2.3.3
Oscilloscope
23
2.3.4
Setting of communication
parameters
24
2.3.4.1
Setting the I2C address
24
2.3.5
Changing important system
parameters
25
2.3.5.1
Setting the voltage limits
25
2.3.5.2
Setting speed and current limits
26
3
Startup of the cyber
®
reaction
wheel 2
27
3.1
Safety instructions
27
3.2
Preparations
27
3.3
Startup with the cyber
®
reaction
wheel assistant
27
3.3.1
Installation at cyber
®
reaction
wheel starter kit
28
3.3.2
Establishing the power supply
28
3.3.3
Establishing a connection
28
3.3.4
Speed setting
29
3.4
Prototypical integration of the
cyber
®
reaction wheel 2 into an
ADCS environment
30
3.4.1
Preparations at the cyber
®
reaction
wheel starter kit
30
3.4.2
Example of an integration of a
reaction wheel for startup via SPI
with a Nucleo board from ST
30
3.4.3
Communication interfaces
32
3.4.3.1
I2C interface
33
3.4.3.2
SPI interface
33
3.4.3.3
UART interface
34
3.4.4
Wittenstein software stack for
integration of the reaction wheel 35
3.5
Diagnostics using the cyber
®
reaction wheel assistant
35
3.6
Firmware update
36
3.6.1
Firmware update with the cyber
®
reaction wheel assistant
36
3.6.2
Firmware update with ADCS
36
4
Integration of the cyber
®
reaction
wheel 2 into a satellite
37
4.1
Electrical integration of the
cyber
®
reaction wheel 2
37
4.2
Mechanical integration of the
cyber
®
reaction wheel 2
38
4.3
Installation of the cyber
®
reaction wheel 2
38
4.4
Requirements for power
adapters and supply voltage
39
4.5
Installation space
39
4.6
Mounting position
39
4.7
Cooling
39
4.8
Maintenance
39
4.9
Software-side integration in
ADCS
39