EMCPII+ for Gas Engines Caterpillar


Starting Motor Magnetic Switch - Test - for Engine with ECM

Usage:

G3516B CME



图 1g00680589

起动马达继电器 (SMR) 系统示意图




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接线盒和起动马达电磁开关

两个起动马达电磁开关(SMMS)用于有两个起动马达的系统中。 每个起动马达都用一个开关。

测试步骤

  1. 控制面板之下,从控制面板上断开直流接头2。 控制面板之下,使用 7X-1710 万用表探针 ,以便于测量接头触点6 (SMMS)和触点11 ("B-")之间的电阻。 电阻应该测量以下值。

    • 单起动马达系统为 26 到 33 欧姆。

    • 双起动马达系统为 13 到 17 欧姆。

    如果电阻不正确,更换有问题的电磁开关。 如果电阻正确,进行步骤 2。

  1. 断开从小齿轮电磁阀到起动马达的电缆。 在双起动系统的两个起动马达上都应用这个步骤。

  1. SMMS 处的接线盒内,将万用表的正极电线接到端子TS1-24上,负极电线接到发电机壳体内的TS1-25上。 如果第二个电磁开关在双起动马达系统中测试,那么将负极电缆连接到端子TS1-26上。

    注: 步骤4中的跨接线仅可保持 10 秒钟的连接。

  1. 临时在端子1 ("B+")和端子 4 之间接上一根跨接线。 测得电压后,立刻断开这根导线。 不能让导线保持连接状态超过 10 秒钟 正确的测量值应该在大约 24 DCV 到大约 2 DCV 之间变化。

如果电压高于 2.0 DCV,那么更换电磁开关。 如果开关超过步骤1和步骤4的要求,开关工作正常。 重新连接本步骤中拆下的导线和电缆。

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