正確選用控制元件的品種、規(guī)格是提高元件使用可靠性的關(guān)鍵。為此必須深入確切地了解和分析機(jī)床對(duì)電氣控制系統(tǒng)的要求和系統(tǒng)對(duì)控制元件的要求。并且收集和消化控制元件制造廠提供的技術(shù)材料，如果這些資料不能滿足選用的要求時(shí)，機(jī)床制造廠可按實(shí)際使用的條件對(duì)控制元件進(jìn)行試驗(yàn)以確定是否合用。由于選用不當(dāng)影響可靠性的例子有：忽視輸入或輸出的機(jī)械參數(shù)，例如選電磁鐵時(shí)未考慮所拖負(fù)載的力――行程特性，選限位開關(guān)時(shí)未考慮撞塊速度；選接觸器時(shí)未考慮點(diǎn)動(dòng)、反接制動(dòng)的工作方式；選繼電器時(shí)未考慮能做到可靠接觸的額定工作電壓和額定小工作電流；選短路保護(hù)電器（包括熔斷器）時(shí)未考慮對(duì)接觸器等觸頭的保護(hù)；選控制變壓器時(shí)未考慮漏阻抗在電磁系統(tǒng)起動(dòng)電流情況下的壓降等。
300-00-00-08-36-03 Bently Nevada >>
30008-00-12-30-02 Bently Nevada >>
3010/11-07-00-03-00-01-02-00-01-00-00-00-00-00-00-00 Bently Nevada >>
3010/11-07-00-03-00-01-02-00-01-00-00-00-00-00-00-00 Bently Nevada >>
30101-00-47-10-02-00 8MM 3300XL Bently Nevada >>
30101-00-47-10-02-00 8MM 3300XL Bently Nevada >>
3060/00-01 Bently Nevada >>
3060/00-01 Bently Nevada >>
3060/01-01-01-01-1-00-0 Bently Nevada >>
3060/01-01-01-01-1-00-0 Bently Nevada >>
3060/01-02-01-01-00-00-00 Bently Nevada >>
3060/01-02-01-01-00-00-00 Bently Nevada >>
3060/10-1-0-0-0-0-0-0-0-0 Bently Nevada >>
3060/10-1-0-0-0-0-0-0-0-0 Bently Nevada >>
3060/12-3-0 Bently Nevada >>
3060/12-3-0 Bently Nevada >>
3060/13-0-1-0-0-0 Bently Nevada >>
3060/13-0-1-0-0-0 Bently Nevada >>
3060/14-1-0-0 Bently Nevada >>
3060/14-1-0-0 Bently Nevada >>
3060/15-32-0-0-0-0-0-0-0-00-30-0-0-0-0 Bently Nevada >>
3060/15-32-0-0-0-0-0-0-0-00-30-0-0-0-0 Bently Nevada >>
3060/90-01-01-01-07-00-00-00 Bently Nevada >>
3060/90-01-01-01-07-00-00-00 Bently Nevada >>
3120-2800-300 Bently Nevada >>
3300 P/N 330100-90-00 9 METRE Bently Nevada >>
3300 P/N 330100-90-00 9 METRE Bently Nevada >>
3300 P/N 330100-90-02 9 METRE Bently Nevada >>
3300 P/N 330100-90-02 9 METRE Bently Nevada >>
3300 P/N 330100-XX-05 9 METRE Bently Nevada >>
3300 P/N 330100-XX-05 9 METRE Bently Nevada >>
3300 REBAM PROBE - 3/8-24 UNF Bently Nevada >>
3300 REBAM PROBE - 3/8-24 UNF Bently Nevada >>
3300 XL Bently Nevada >>
3300 XL Bently Nevada >>
3300 XL 8 MM PROBE M10X1 Bently Nevada >>
3300 XL 8 MM PROBE M10X1 Bently Nevada >>
3300 XL P/N 29776-10-02 Bently Nevada >>
3300 XL P/N 29776-10-02 Bently Nevada >>
3300 XL P/N 330101-00-10-10-02-05 Bently Nevada >>
3300 XL P/N 330101-00-10-10-02-05 Bently Nevada >>
3300 XL P/N 330101-00-16-10-02-05 Bently Nevada >>
3300 XL P/N 330101-00-16-10-02-05 Bently Nevada >>
3300 XL P/N 330101-00-32-10-02-05 Bently Nevada >>
3300 XL P/N 330101-00-32-10-02-05 Bently Nevada >>
3300 XL P/N 330103-00-03-05-02-00 Bently Nevada >>
3300 XL P/N 330103-00-03-05-02-00 Bently Nevada >>
3300 XL P/N 330105-02- 12-10-02-00 Bently Nevada >>
3300 XL P/N 330105-02- 12-10-02-00 Bently Nevada >>
3300 XL P/N 330130-085-00-00 Bently Nevada >>
3300 XL P/N 330130-085-00-00 Bently Nevada >>
3300 XL PROXIMITOR Bently Nevada >>
3300 XL PROXIMITOR Bently Nevada >>
3300/12-02-20 Bently Nevada >>
3300/12-02-20 Bently Nevada >>
3300/12-02-20-00 Bently Nevada >>
3300/12-02-20-00 Bently Nev