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普通面板仪表安装问题

2009-1-13 18:53

<p><font face="Verdana">普通面板仪表安装问题</font><br/></p>
<p><font face="Verdana"><font face="Verdana">Common Panel Meter Setup Problems<br/>General notes<br/>When a person is setting up an instrument a commonly occurring problem is that<br/>the functions they wish to alter do not appear on the display. IF this happens the<br/>likely cause of the problem is the setting of the “special function” (SPFN),<br/>sometimes calLED the “remote input function” (R.INP). If this is set to “No<br/>Program Access” (NO.Ac) or “Setpoint Access Only” (SP.Ac) then access to<br/>functions will either not be allowed, or will be limited. To check the “special<br/>function” setting and obtain access to the functions place a wire link between the<br/>instruments external input (normally labeled “EXT-IN” on the electrical installation<br/>diagram) and ground. This link is sometimes made via a key switch. With the link<br/>in position access to the functions is now possible. When the link is removed the<br/>access reverts to the “special function” access setting.<br/>When setting up the instrument it is important to note that if the instrument is left in<br/>the function mode for too long it will “time out” and revert to normal measuring<br/>mode.<br/>Upon power being applied to the instrument a “switch on” or “wake up” display<br/>routine takes place. This typically comprises an LED test (****) followed by<br/>factory and software version identification messages and finally a “live” reading<br/>from the input sensor or test input. This routine is normal and should not be taken<br/>as indicating a fault.</font></font></p>
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