1. 4m. Blanco TCS Upgrade: Signals and Interfaces
August 22,2007
4m. Blanco TCS Upgrade: Signals and Interfaces
Eduardo Mondaca

2. Agenda Present TCS System System Block Diagram Wanted Configuration
How we do the change?

3. Present TCS Main System
VME Chassis
VME Interface
Drive Interface
Power Supplies

4. VME Chassis

5. VME Chassis Connectors Processor Panel PMAC
PMAC: Programmable Multi-Axis Controller

6. Agenda Present TCS System System Block Diagram Wanted Configuration
How we do the change?

7. Present System Block Diagram9
DOME
Encoders 23
Focus Handpaddle (Screen Room)
VME 9100D
Card #1
VME 9100D
Card #2 18 21
RA Abs.
Encoders
Guider Table
Focus & Guider Interface Card (A5)
x position y position Focus
ON / OFF
RS-232
A Port
Guider Motors 23
B Port
DEC Abs.
Encoders
LAMPS
C Port
IR/BS Control
VME Bus 5
DEC Inc.
Encoders
SAT_CLOK
Guider
Corrections
RS232 / RS485 Converter
CPU
(Heurikon)
PMAC
Card 5
RS-485
DEC Inc.
Encoders
IR Instruments
Coordinates
RS232 / RS485 Converter
RS-485
RS-232
RA Servos
SMC Based
Subsystems
RS232 / RS485 Converter
RS-485
RS-232
DEC Servos
VME Chassis

8. Agenda Present TCS System System Block Diagram Wanted Configuration
How we do the change?

9. Hardware Wanted Architecture
Instrument
Adapter
(PC)
Instruments (ISPI, Hydra, DECAM, etc.)
Ethernet
Operator GUI
(PC)
CFADC
(SMC)
4MAP
(PC)
F8 SEC
(SMC)
ROT 4M
(SMC)
IMAN
(PC)
Ethernet/
Serial
Converter
RS-485
DOME
Interface
TCS APP +
TCS Kernel
(PC)
Comp
Lamp
Interface
Dome/
Utility
(PC)
To Ra/Dec Motors
Interlocks
Mount
(PC)
Mount Interface
Encoders
Guider
Interface
HandPaddle
Time

10. Dome/Utility Interface
Rack Evolution
Actual Rack
VME Chassis
Future Rack
Not Used
TCS App + TCS Kernel
(PC)
VME Interface
Dome/Utility (PC)
Dome/Utility Interface
Not Used
Mount Control
(PC with PMAC)
Drive Interface
Not Used
Mount Control Interface
Power Supplies
Power Supplies

11. Agenda Present TCS System System Block Diagram Wanted Configuration
How we do the change?

12. GOALS
Changes should be done in steps that permit to return quickly to the last state if something fails.
Minimize the impact on the normal telescope operation (e.g. Calibrations during daytime).

13. Current Signal Flow Encoder Signals (Incremental and Absolute) VME
Chassis
Front
Panel
SMC and other signals (Serial, Interlock, etc)
Control Output Signals (Servos, Lamps, etc)

14. Patch Panel Concept Inputs Inputs Panel: Connectors VME Chassis
Panel: Wiring
Inputs
Inputs
Multiplexing
Panel:
Connectors
VME
Chassis
Outputs
Outputs
Outputs
Inputs
Present
Signals
New Signals access

15. Patch Panel: Example for Mount
Encoder
Inputs
Encoder
Inputs
Panel:
Connectors
VME
Chassis
Other
Inputs
Other
Inputs
Control
Outputs
Other
Outputs
Mount Control
Outputs
Mount PC
With
PMAC
Encoder
Inputs

16. Patch Panel
To/From VME
Chassis
To/From Telescope
Patch
Connectors

17. 4m. Blanco TCS Upgrade: Servo Power Drivers
Eduardo Mondaca

18. Agenda Present Servo System Present Control Loops Wanted Configuration
August 22,2007
Agenda
Present Servo System
Present Control Loops
Wanted Configuration
Some Delta Tau Options
What do we get?

19. Present Servo Racks and the Mount Control Loop
TCS on VME Chassis
Mount
Encoders
VME 9100
RA Manual Slew
Tach1 M1 RA
Servo
Rack
Abs. RA
Inc. RA
Slew/Track
Select.
Tach 2 M2
RA Speed Ref.
VME
PMAC
DEC Speed Ref.
Tach 3
DEC
Servo
Rack M3
Slew/TrackSelect.
Abs.
DEC
Inc.
DEC
Heurikon
Processor
Tach 4 M4
DEC Manual Slew
VME 9100

20. Servo Racks
DEC Servo Rack
RA Servo Rack

21. Servo Drivers Schematics
Slew Control
PMAC Interface
Card
Velocity
Comparator
Card
Alarm Control
Card
50 VDC
Power Supply
Power
Drivers
DC Current
Amplifier
Control Card
Motors
and
Tacho-
Generators

22. Servos Functions /Cards
PMAC Interface
Slew interface
Slew control
Velocity comparator
Alarm Control
DC Current Amplifier Control CardPMAC interface

23. Agenda Current Servo System Servos Control Loops Wanted Configuration
August 22,2007
Agenda
Current Servo System
Servos Control Loops
Wanted Configuration
Some Delta Tau Options
What do we get?

24. Present Driver Control Block
50 VDC
Noise Compensation
PMAC/Manual
Slew/Track
Reference F
Slew/Track Sel.
M-1
Tach1
Preload
Circuit
Voltage
Feedback - + + - + + +
Current
Power
Driver Σ Σ Σ Σ - F -
Current Feedback Σ F
From Tach2
To M-2 Loop -1
F: Filters
From Tach2
From Tach-2

25. Agenda Current Servo System Servos Control Loops Wanted Configuration
August 22,2007
Agenda
Current Servo System
Servos Control Loops
Wanted Configuration
Some Delta Tau Options
What do we get?

26. Wanted Configuration Mount Encoders
Mount PC
and
Interfaces
Tach1
RA Manual Slew M1 RA
Power
Amplifier
Abs. RA
Inc. RA
RA Voltage
Reference
Tach 2 M2
PCI
PMAC
Tach 3
DEC Voltage
Reference
DEC
Power
Amplifier M3
Abs.
DEC
Inc.
DEC
DEC Manual Slew
Tach 4 M4

27. Agenda Current Servo System Servos Control Loops Wanted Configuration
August 22,2007
Agenda
Current Servo System
Servos Control Loops
Wanted Configuration
Some Delta Tau Options
What do we get?

28. UMAC: Universal Multi-Axes Controller
Delta Tau Products
Compact UMAC
UMAC: Universal Multi-Axes Controller
Geobrick

29. Agenda Current Servo System Servos Control Loops Wanted Configuration
August 22,2007
Agenda
Current Servo System
Servos Control Loops
Wanted Configuration
Some Delta Tau Options
What do we get?

30. We Get Eliminate wire wrap cards.
More efficient Power Devices. Less dissipation.
Update some obsolete components.
Simplified Logic for alarms using PLC.
Adjustment could be done digitally.
Cabling Simplification.

31. Time Line for Electronics Activities
August 22,2007
Time Line for Electronics Activities

32. Electronics Timeline D&I = Design and Implementation Conceptual Design
2008
2009
2010
Jul-Sep 07
Oct-Dec 07
Jan-Mar 08
Apr-Jun 08
Jul-Sep 08
Oct-Dec 08
Jan-Mar 09
Apr-Jun 09
Jul-Sep 09
Oct-Dec 09
Jan-Mar 10
Conceptual Design
Purchases
Mount Interfaces and Power Drivers
Encoder Tests
Mount Tuning
SMC Tests
TCS Application Tests Support
Dome/Utility Interface D&I
DOME Tests
Guider Interface D&I
Guider Tests
Instruments Interfaces D&I
Instruments Tests
Commis.
EM 60%
ET 30%
ED 30%
D&I = Design and Implementation