MODIFICATION
A -- HARDWARE AND SOFTWARE SUPPORTING THE MAKER PROJECT
- Notice Date
- 10/14/2009
- Notice Type
- Modification/Amendment
- NAICS
- 541330
— Engineering Services
- Contracting Office
- NASA/Lyndon B. Johnson Space Center, Houston Texas, 77058-3696, Mail Code: BH
- ZIP Code
- 00000
- Solicitation Number
- NNJ09298123Q
- Response Due
- 10/19/2009
- Archive Date
- 10/14/2010
- Point of Contact
- Adrian D. Clayton, Contract Specialist, Phone 281-483-8498, Fax 281-244-0995, Email adrian.d.clayton@nasa.gov
- E-Mail Address
-
Adrian D. Clayton
(adrian.d.clayton@nasa.gov)
- Small Business Set-Aside
- Total Small Business
- Description
- This is modification 4 to the synopsis entitled HARDWARE AND SOFTWARE SUPPORTINGTHE MAKER PROJECT under NNJ09298123Q which was posted on July 20, 2009. The purpose ofthis modification is to post the following updated Statement of Work (SOW) reflective ofthe questions and answers below:http://procurement.jsc.nasa.gov/NNJ09298123Q/SOW-Updated-10-9-09.rtf Question #1: In Section 3.3.3 (Variable Frequency Drives), I need an example of such acommercially available product and the use of the AC voltage output for the use indriving the DC motors. Also why is variable frequency required instead of using thestandard 50 or 60Hz AC voltage?Answer #1: "DC" is a typo. Correct requirement includes "AC".Variable Frequency Drivesare being used to control speeds on various accessories such as spool feeders for wirefeedstock or a spindle for traditional subtractive machining finishing passes.Question #2: In Section 3.3.8 about the Manual Override for VFD control, what AC power isavailable when the VFD is manually overidden in order to power the system?Answer #2: The Manual Override is a physical control knob that can be used to adjust theoutput frequency of the VFD in lieu of software based control.It does not presupposethat the VFD has been turned off and does not negate the requirement for software basedcontrol capability, rather it simply provides an alternative way of controlling the VFD'soutput.Question #3: In Section 2.1.3 (Z-Axis Over Travel Limit Switches), if the limit switchfails, is there a current sense on the linear actuators to be monitored in order toprevent damage to the electronics or equipment for a hard stop?Answer #3: No, the maximum stepper motor voltage/amperage is specified, and the vendorsupplied motor drives must facilitate current limiting to protect the motor in case thelimit switch fails. In the event this maximum rating is achieved, the vendor suppliedcontrol software must "alarm out", alert the user/operator what axis has reached limit,and provide for resetting/restarting of the failed operation at the point of failure (orthe beginning of the motion control command that failure occurred within).The due date for responses is extended to October 19, 2009.Documents related to this procurement will be available over the Internet. Thesedocuments will reside on a World Wide Web (WWW) server, which may be accessed using a WWWbrowser application. The Internet site, or URL, for the NASA/JSC Business Opportunitieshome page is http://prod.nais.nasa.gov/cgi-bin/eps/bizops.cgi?gr=D&pin=73 Offerors are responsible for monitoring this site for the release of the solicitation andany amendments. Potential offerors are responsible for downloading their own copy ofthe solicitation and amendments (if any).
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/NASA/JSC/OPDC20220/NNJ09298123Q/listing.html)
- Record
- SN01985527-W 20091016/091014235351-420d7de66815911a4463c25933c18c9b (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
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