General Information:
Controller #1, axis G
1236 interconnect box
CN –1 (used in Lab tests, use +1,-1 on controller1)
KD = 289
KP = 95
KI = 33

4000 cts = 1 rev on drive shaft
5:1 gear ratio
4000 x 5 = 20000 cts/rev on large drive gear
20000 / 7 filter panels = 2857 cts/ panel
 
 

Caution:

-The motor leads may not be connected to the same pin numbers as in the Lab. Use extreme caution when first moving the Filter Wheel. If the red and black wires are switched the stage will attempt to run away. The motor encoder will try to correct the position error and it will speed up as the error continues to get larger and larger. Use a very slow speed at first and be ready to issue a stop command and/or disconnect the motor power leads.

-The motor encoder ribbon cable is longer. This may cause unknown problems.

-The cables are untested.
 
 
 
 

Test plan for testing the Science Filter Wheel in DEIMOS:

1. Check cabling.
2. Set Filter Wheel initialization values (PID numbers, CN numbers, AC/DC, speed, turn motor on).
3. Check movement to be sure filter wheel doesn’t run away.
4. Check movement for smoothness and stability with Continuous Motion Test. May need to change PID numbers if not smooth and stable. (see Tuning Procedure document)
5. Enable and check optical fiducial with Fiducial Test.
6. Set zero position at fiducial edge and do Filter Panel Test.

Programs used for tests:

FW_cont (Continuous Motion Test)
VF10.4
SHG
KDG=200
KPG=20
KI=2
CN (-1 in Lab, needs to be +1,-1 with controller 1)
JGG=2000
BGG
 
 

FW_stop (Filter Panel Test)
VF10.4
SHG
CB7
KDG=200
KPG=20
KIG=2
CN (-1 in Lab, needs to be +1 with this amp)
ACG=256000
DCG=256000
SPG=2000
DPG=0
PRG=2857
BGG

Fiducial Test
Enables the optical fiducial. The TS number should change when the fiducial detects the blade.
CB7
TSG
FEG
BGG
TSG