OKUMA BL3-D75A伺服驱动

产品详细资料
验证继电器1 A或5 A的标称电流是否与所连接CT的二次额定值相匹配。不匹配的CT可能导致设备损坏或保护不足。零序CT的位置，以便检测接地故障电流，如下所示。建议在零序CT上进行双绞线布线。重要提示：继电器的测量值高可达电流输入额定值的46倍。对于高于46×CT比率的电流，时间过电流曲线变为水平线。AC电压输入745有一个分压器类型的AC电压输入。没有内部保险丝或接地连接。可以使用大比例为5000:1的电压互感器。标称二次电压必须在60至120 V的范围内。3.2.7逻辑输入外部触点可以连接到16个逻辑输入。如图所示，这些触点可以是干触点，也可以是湿触点。也可以使用两种接触类型的组合。干触点的一侧连接到端子D11。这是+32 V直流电压轨。另一侧连接到所需的逻辑输入端子。当干触点闭合时，2.2毫安的电流流过相关电路。湿触点的一侧连接到外部直流电源的正子。另一侧连接到所需的逻辑输入端子。此外，外部电源的负极侧必须在端子D12处连接到继电器直流负极导轨。这种布置的大外部电源电压为300 V DC。所有逻辑输入连接必须遵守正确的极性，否则可能导致设备损坏。
Verify that the relay’s nominal current of 1 A or 5 A matches the secondary rating of the connected CTs. Unmatched CTs may result in equipment damage or inadequate protection. The exact placement of a zero-sequence CT so that ground fault current will be detected is shown below. Twisted pair cabling on the zero-sequence CT is recommended. Note IMPORTANT: The relay will correctly measure up to 46 times the current input nominal rating. Time overcurrent curves become horizontal lines for currents above the 46 × CT rating.AC Voltage Input The 745 has one voltage divider type input for AC voltages. There are no internal fuses or ground connections. Voltage transformers up to a maximum 5000:1 ratio may be used. The nominal secondary voltage must be in the 60 to 120 V range. 3.2.7 Logic Inputs External contacts can be connected to the 16 logic inputs. As shown, these contacts can be either dry or wet. It is also possible to use a combination of both contact types. A dry contact has one side connected to terminal D11. This is the +32 V DC voltage rail. The other side is connected to the required logic input terminal. When a dry contact closes, a 2.2 mA current flows through the associated circuit. A wet contact has one side connected to the positive terminal of an external DC power supply. The other side is connected to the required logic input terminal. In addition, the negative side of the external source must be connected to the relay DC negative rail at terminal D12. The maximum external source voltage for this arrangement is 300 V DC. Correct polarity must be observed for all logic input connections or equipment damage may result.
主营产品简介
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●使用前:

在操作和维护，安装设备之前，请阅读并严格遵守安全相关的信息。

Read and strictly follow safety-related information before operatingmaintainingand installing equipment.

●使用者要求:

必须从事安装，组装或维护设备等相关工控电气机械以及其他相关技术的人员。

Must be engaged in the installation,assembly or maintenance of equipment and other related industriacontroeectrica machinery and other related technica personne.应用范围:

应用于品牌本系列工业以及生产生活自动化设备产品。

Used in the brand of this series of industriaand production automation eauipment products

适用于场景:系统集成，非标定制，产线升级改造，原设备电气替换等等。

Suitable for scenarios:system integration,non-standard customizationproduction line upgrading and transformation,electrical replacement of original equipment,etc.

●操作人员:

应该由本品牌专业培训操作员来安装、操作和维修设备。专业人员具有技术能力强，熟悉安全信息和安全实施:

熟悉设备的安装加工、操作和维护:熟悉处理所有的潜在危险情况。

Equipment should be installed,operated and maintained by trained operators from the brand

●危险情况

警告

.请注意使用人员的人身安全。

●除了产品特性以及功能，还需了解产品的使用寿命环境。

●充分学习产品使用手册，否则非专业人员可能会造成人身危险。

Study the product instruction manual thoroughlyotherwise it may cause personal danger to non-professionals.

●服务行业

适用水泥，木业，石业，橡胶，石油，化工，发电，环保，水处理，制冷，交通，钢铁，食品，饮料，船舶，制冷等行业

Applicable to cementwood,stone,rubber,petroleumchemical, power generation