<p>各位高手和专家,请教一个问题。关于楼控网络通讯和现场控制器的线缆选用,有没有比价清晰明了的选型说明。这是同事给的一份表,因本人学识较浅,刚刚接触此行业,不知如何入手。请帮忙指点,若想深入了解,请帮忙推荐一些书籍或者资料。多谢!
<table style="WIDTH: 691pt; BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="920" border="0">
<colgroup>
<col style="WIDTH: 35pt; mso-width-source: userset; mso-width-alt: 1472" width="46">
<col style="WIDTH: 71pt; mso-width-source: userset; mso-width-alt: 3040" span="2" width="95">
<col style="WIDTH: 234pt; mso-width-source: userset; mso-width-alt: 9984" width="312">
<col style="WIDTH: 155pt; mso-width-source: userset; mso-width-alt: 6592" width="206">
<col style="WIDTH: 125pt; mso-width-source: userset; mso-width-alt: 5312" width="166">
<tbody>
<tr style="HEIGHT: 23.25pt" height="31">
<td class="xl73" style="WIDTH: 691pt; HEIGHT: 23.25pt" width="920" colspan="6" height="31">楼控接口线材选型</td></tr>
<tr style="HEIGHT: 17.25pt" height="23">
<td class="xl66" style="HEIGHT: 17.25pt" height="23">编号</td>
<td class="xl67" style="BORDER-LEFT: medium="medium" none">类型</td>
<td class="xl67" style="BORDER-LEFT: medium="medium" none">种类</td>
<td class="xl67" style="BORDER-LEFT: medium="medium" none">说明</td>
<td class="xl67" style="BORDER-LEFT: medium="medium" none">线型</td>
<td class="xl68" style="BORDER-LEFT: medium="medium" none">备注</td></tr>
<tr style="HEIGHT: 45pt" height="60">
<td class="xl76" style="BORDER-TOP: medium="medium" none; BORDER-BOTTOM: black="black" 0.5pt solid; HEIGHT: 105pt" height="140" rowspan="2">1</td>
<td class="xl74" style="BORDER-TOP: medium="medium" none; BORDER-BOTTOM: black="black" 0.5pt solid" rowspan="2">模拟量输入AI</td>
<td class="xl70" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none">非电量参数</td>
<td class="xl71" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none; WIDTH: 234pt" width="312">非电量参数主要为温度参数测量,包括室外空气温度、送风温度、冷冻冷却水温。其传感器有热敏电阻型、铂1000、镍1000等。</td>
<td class="xl71" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none; WIDTH: 155pt" width="206">线路电阻会影响测量精度,一般选RVVP2X1.0,超过50米选RVVP2X1.5</td>
<td class="xl72" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none; WIDTH: 125pt" width="166">若选用不同厂家的传感器,会存在匹配问题。</td></tr>
<tr style="HEIGHT: 60pt" height="80">
<td class="xl70" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none; HEIGHT: 60pt" height="80">电量参数</td>
<td class="xl71" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none; WIDTH: 234pt" width="312">湿度、压力、压差、电流、电压、功率因数等。传感器的输出信号一般为0~10V或4~20MA。</td>
<td class="xl71" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none; WIDTH: 155pt" width="206">一般连线为4芯,可选RVVP4X1.0。每种传感器均需要提供电源,有DDC提供24V交流或直流。</td>
<td class="xl72" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none; WIDTH: 125pt" width="166">由于是电信号输出,可选用不同厂家的传感器与DDC连接,但有时会存在测量范围转换的问题。</td></tr>
<tr style="HEIGHT: 90pt" height="120">
<td class="xl69" style="BORDER-TOP: medium="medium" none; HEIGHT: 90pt" height="120">2</td>
<td class="xl70" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none">模拟量输出AO</td>
<td class="xl70" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none"> </td>
<td class="xl71" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none; WIDTH: 234pt" width="312">空调新风机组的电动风阀、电动水阀控制,水泵变频调速,及照明系统的调光设备,DDC的输出信号一般是0~10V、4~20MA。</td>
<td class="xl71" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none; WIDTH: 155pt" width="206">DDC与电动风阀、电动水阀的连线为4芯,可选RVVP4X1.0,两根为信号线,两根为电源线,如果距离过长,要考虑线路压降问题,选用RVVP4X1.5。DDC与变频器、调光检测器的连线为2芯。</td>
<td class="xl72" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none; WIDTH: 125pt" width="166"> </td></tr>
<tr style="HEIGHT: 30pt" height="40">
<td class="xl69" style="BORDER-TOP: medium="medium" none; HEIGHT: 30pt" height="40">3</td>
<td class="xl70" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none">数字量输入DI</td>
<td class="xl70" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none"> </td>
<td class="xl71" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none; WIDTH: 234pt" width="312">主要是各类开关监测设备的信号测量,如水泵状态、风机状态等,通常为干触点信号(无电压)。</td>
<td class="xl71" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none; WIDTH: 155pt" width="206">RVV2X1.0</td>
<td class="xl72" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none; WIDTH: 125pt" width="166"> </td></tr>
<tr style="HEIGHT: 105pt" height="140">
<td class="xl69" style="BORDER-TOP: medium="medium" none; HEIGHT: 105pt" height="140">4</td>
<td class="xl70" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none">数字量输出DO</td>
<td class="xl70" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none"> </td>
<td class="xl71" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none; WIDTH: 234pt" width="312">主要是各类风机、水泵、照明回路的启停控制,这些设备的启停均是通过接触器完成的,因此DDC与这些设备的接口,主要是与接触器的接口。除德国西门子的DDC控制器的数字量输出为240V、2A,可直接与被控设备控制回路(接触器)直接相连外,大多数厂家的控制器数字量输出点容量太小,需要通过中间继电器转换,才能完成这些设备的控制。</td>
<td class="xl71" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none; WIDTH: 155pt" width="206">RVV4X1.0</td>
<td class="xl72" style="BORDER-TOP: medium="medium" none; BORDER-LEFT: medium="medium" none; WIDTH: 125pt" width="166"> </td></tr></tbody></table></p> |
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