File $Source: /home/juda/www/hrc_flight/RCS/door_close.html,v $
Version $Revision: 1.5 $
Last Update $Date: 1999/05/10 18:08:08 $
HRC CCB Status Approved

OP03 Procedures op03:

HRC Command Sequences

HRC Door Close

Description:

The HRC detector housing door will be opened early in the orbital activation period. It may be necessary to close the door at some time during the mission (such as when doing an ACIS bake-out).

Before running this sequence the HRC focus shutters should be at their home positions. Once the shutters are verified to be "homed", the motor controller is configured for closing the HRC door, the door is selected and moved to its closed limit switch. After the door is verified to be closed the motor drive is disabled and all motors are de-selected.

Cautions/Restrictions:

This sequence requires a real-time contact so that the limit switch verification can be performed.

Before running this sequence the HRC focus shutters should be at their home positions (see HRC-C-001).

If the HRC door is to be closed, the HRC MCP HVPS must be turned off.

Flow Diagram

Delta-Time Command Mnemonic Description Cmd Field Mnemonic Data Parameter Telemetry Verifier Expected Value Notes
Verify +Y Shutter is at Home Position
Verify -Y Shutter is at Home Position
00:00:01.000 2MCMRASL Motion Control Mode Reset     2MCMDARS RSET sd6f00
00:00:01.000 2DRMTASL Select Door Motor     2DRMTAST SEL sd7100
00:00:01.000 2STFLADI Clear Stop Flags     2SFLGAST DISA sd5400
00:00:01.000 2STFLAEN Enable Stop Flags     2SFLGAST ENAB sd5401
00:00:01.000 2SMOIADI Disable Selected Motor Over-current Protection     2DROIAST DISA sd4900
00:00:01.000 2SMOTAEN Enable Selected Motor Over-temperature Protection     2DROTAST ENAB sd4a01
00:00:01.000 2CHPLAEN Enable Primary Closed/Home Limit Switch     2CPLSAST ENAB sd5001
00:00:01.000 2CHSLADI Disable Secondary Closed/Home Limit Switch     2CSLSAST DISA sd5100
00:00:01.000 2OMPLADI Disable Primary Open/Max Limit Switch     2OPLSAST DISA sd5200
00:00:01.000 2OMSLADI Disable Secondary Open/Max Limit Switch     2OSLSAST DISA sd5300
Verify Proper Motor Controller Configuration
00:00:01.000 2MDRVAEN Enable Motor Drive Electronics     2MDRVAST ENAB sd6801
00:00:01.000 2MVLAAEX Move to Home/Closed Limit Switch     2MCLAAMD CMD sd6a01
Wait while detector housing door moves
Verify Primary Home/Closed Limit Switch Activated (2CPLSAAC = ACTV)
Verify Secondary Home/Closed Limit Switch Activated (2CSLSAAC = ACTV)
Verify Door Closed Limit Switch indicates that the door is closed (2DRLSCL = CLOS)
00:00:01.000 2MDRVADI Disable Motor Drive Electronics     2MDRVAST DISA sd6800
00:00:01.000 2ALMTADS Deselect All Motors     2ALMTAST SEL sd7000


$Log: door_close.html,v $

Revision 1.5 1999/05/10 18:08:08 jhc

corrected initial time delay to 1 sec

Revision 1.4 1999/04/07 18:34:41 juda

HTML changes: added DOCTYPE and ALT reference for flow diagram - added "name" tags to sub-sequences

Revision 1.3 1998/06/01 12:22:28 juda

Corrected 2SMOTAEN serial digital value (changed sd4a00 to sd4a01) - changed 2SMOIAEN line to 2SMOIADI (entire line enable to disble) - reformatted table entries for telemetry verification of end motion

Revision 1.2 1998/05/13 19:52:17 juda

Added shutter constraint to Cautions/Restrictions block - correction and additions to graphical flowchart - Marked as Approved

Revision 1.1 1998/05/11 15:14:43 juda

Initial revision


Dr. Michael Juda
Harvard-Smithsonian Center for Astrophysics
60 Garden Street, Mail Stop 70
Cambridge, MA 02138, USA
Ph.: (617) 495-7062
Fax: (617) 495-7356
E-mail: mjuda@cfa.harvard.edu