Date: Mon, 23 Aug 2004 16:57:06 -0600 (MDT)
From: Stephanie Snedden
Subject: Re: PMSS controller [was RE: 2.5m obslog 20040820 (MJD 53238)]
Also note that this happened to M1 one other time that I know of earlier
in the dark run. I'd have to dig through the night logs to get a date.
Steph
On Mon, 23 Aug 2004, Pete Newman wrote:
> Jon--
>
> Is the PMSS on the "wrong" power supply at the moment as well as the imager?
> One guess from Russell on this problem is that there was a power glitch.
>
> Cheers,
>
> --Pete
>
> > -----Original Message-----
> > From: Russell E Owen [mailto:rowen@u.washington.edu]
> > Sent: Monday, August 23, 2004 11:37
> > To: Pete Newman; obs-report-25m@apo.nmsu.edu
> > Subject: Re: 2.5m obslog 20040820 (MJD 53238)
> >
> >
> > At 12:47 PM +0000 2004-08-21, Pete Newman wrote:
> > >Modu="mir o MoveOneGalil" (2004-08-21 06:53:14Z)
> > >
> > >When we checked the TPM M1/M2 Galil Axes display, all the M1 actual an
> > >commanded numbers were zero!  The TCC reported:
> > >
> > >mir stat
> > >0 14 I PrimDesOrient=-2862.62, -3.60, 26.90, 1470.40, 198.00;
> > >PrimDesOrientAge=54.8
> > >0 0 W Expected="XQ #STATUS"
> > >0 0 W Received="E=40374.; F=39338.; MG "OK""
> > >0 0 F Modu="prt_ReadMatch"; Text="bad reply"
> > >0 14 I  SecDesOrient=-1287.08, 0.00, -25.00, 0.00, -57.67;
> > >SecDesOrientAge=54.8
> > >0 14 I  SecCmdMount=-1573050., -1653500., -1627200., 4550., -350.
> > >0 14 I  SecActMount=-1572556., -1653287., -1626339., 4550., -350.
> > >
> > >0 14 I  SecOrient=-1283.83, -0.19, -25.05, -0.13, -45.56
> > >0 14 I  SecStatus=1, 1, 1, 1, 1
> > >0 14 I Received=" 0 piezo status word"
> > >0 14 I Received="-000001676, -000001676, -000001676 piezo corrections
> > >(microsteps)"
> > >0 14 W Text="failed for one or more mirrors: Prim"
> > >0 14 : Cmd="mir stat"
> >
> > I looked at the log around that time and found this alarming snippet:
> >
> > from.tcc25m   2004-08-21 06:53:09.784Z 0 0 I PrimDesOrient=-2862.62,
> > -3.60, 26.90, 1470.40, 198.00; PrimConstRMS=0.00
> > from.tcc25m   2004-08-21 06:53:09.885Z 0 0 I  SecDesOrient=-1284.54,
> > 0.00, -25.00, 0.00, -46.58;  SecConstRMS=0.00
> > from.tcc25m   2004-08-21 06:53:09.886Z 0 0 W Expected="A=49769.;
> > B=41280.; C=48996.; D=-6127.; E=40374.; F=39338.; MG \"OK\""
> > from.tcc25m   2004-08-21 06:53:09.886Z 0 0 W Received="ntroller
> > version  0000000001.1200 started"
> > from.tcc25m   2004-08-21 06:53:09.887Z 0 0 F Modu="prt_ReadMatch";
> > Text="bad reply"
> > from.tcc25m   2004-08-21 06:53:09.888Z 0 0 F
> > Modu="mir_o_MoveOneGalil"; Text="could not specify new positions for
> > Prim mirror actuators"
> > from.tcc25m   2004-08-21 06:53:09.889Z 0 0 W Text="failed to adjust
> > collimation and focus"
> >
> > It looks as if the primary mirror controller spontaneously reset. The
> > most likely explanation I can think of is a power issue (e.g. a spike
> > on the Galil's power supply). Another possibility is a spike on the
> > reset input. In the old controller it was left floating, but nothing
> > was attached to that pin on the connector so this was safe. In the
> > new controller presumably one wire of a ribbon cable is attached to
> > the reset input. Is the other end tied to +5 or ground or whatever is
> > supposed to indicate "no reset"?
> >
> > -- Russell
> >
>
>
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