EasyLogicPM4501 用户手册
09/2025
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TableofContents
安全信息安全注意事项. 测量仪概述 .8测量仪功能概述 ..9 ..9测量仪型号功能汇总.硬件和安装 电力仪表配置 ...1 ...10电力测量仪硬件结构 . 11电能脉冲指示.. .11电力仪表安装及接线 电源/串行通讯指示 ..12 .12直接连接电压限值 .12串行通讯 ...RS-485接线. RS-485电缆. ...14 ...14RS-485端子. ...14输入/输出 ...14开关量输入 继电器输出 .15 .15显示屏. .16概述 16数据显示.. ...16数据显示屏概述 按钮功能.. .. .16 .16示例：浏览显示屏 .17显示屏屏幕菜单. ...18电力仪表设置 概述. .23前面板按钮设置 .23进入设置步骤示例.. .28仪表参数设置步骤示例 通信设置步骤示例.. ...29 .28远程工具设置. .29RS-485端口配置 .30显示屏查看数据. 实时量、功率. ..30 .30电能. .31电能质量 .31模块. 需量记录 ...31 .32极值记录 .32时钟 ..32使用软件来查看电力仪表数据 事件记录 ...32 .32网络安全 .34设备安全. .34
访问控制 34固件升级. .35安全报废. .35测量和计算 网络安全漏洞/事件 .35实时读数 .36 .36电能测量. .36基于象限的varh .36费率电能. 抄表功能 .36 .37碳排放统计. .37极值 .37功率需量 功率需量计算方式. .38 .38区块间隔需量 .38电流需量. .39预测需量 峰值需量 .39 39SOE事件记录 ..39设置数据日志. 开关量输入报警 ..41 .40时钟 ..41有功负荷计时器 .41电力质量. 电力仪表操作计时器 .41 .41谐波概述 ..41总谐波失真%. .41维护与升级 .43维护概述. 排除串行通讯指示的故障 .43 .43测量仪存储器 ..43电力仪表电池 .43查看固件版本 技术协助 ..43 44验证精度 45查看测量仪精度 .45精度测试要求 信号和电源 ..45 .45控制设备 ..45环境 .45验证精度测试 参考设备或电能标准 .46精度验证测试所需的脉冲计算 .46 .47精度验证测试所需的总功率计算 ..47精度验证测试所需的误差百分比计算. 精度验证测试点 ..47电能脉冲注意事项 ..48 .48典型测试误差源 ..48功率、电能和功率因数 .50
功率、电能和功率因数 电流相角与电压相角的偏移 .50 .50真实功率、无功功率和视在功率（PQS） .50功率流. .51功率因数（PF） 真实PF. ...51 .51功率因数符号约定 ...51功率因数最小/最大值约定 .52设备规格 功率因数寄存器格式 .52机械特性 .54 .54电气特性 ...54.电压输入 测量精度 54电流输入 ...5 .54控制电源 .55环境特性 显示屏更新. .55EMC（电磁兼容性） .55安全性 .56RS-485通讯 开关量输入. .56 .56继电器输出. ..56
