Utility Circuit Breaker Failure to Open Circuit Fault
系统运作描述:
发生以下情况时，公用电断路器无法断开的事件代码 4012-7 将变为现行状态：
- 在请求 EMCP 断开断路器之后，公用电断路器没有改变状态。
EMCP 已经停用了设计用于断路器的继电器或数字输出。 公用电断路器位置仍检测到通过公用电断路器 AUX A 的数字输入闭合。
测试步骤 1. 公用电断路器无法断开
- 查看激活和记录的诊断代码，以确定是否有可能指示那些可能导致转换故障的系统出现故障的其他诊断。
- 确认"公用电断路器最长断开时间"事件定时器限制的 EMCP 设定点。 确保定时器设置为分配给完整系统转换的适当时间。
- 导线：检查 EMCP 继电器或数字输出之间的系统导线有无对蓄电池电源短路。 EMCP 继电器或数字输出设计用于至公用电断路器的公用电断路器控制。 如果在公用电断路器上找到电源，而 EMCP 正在指令断路器断开，找到电源并根据需要修理或更换线束。 如果公用电断路器没有找到电源，则可能有坏的公用电断路器。
结果:
- - 停止
Caterpillar Information System:
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WS223, WS223 SS, WS223 XD, WS255, WS255 SS, WS255 XD, WSP223, WSP255, WSF223, WSF223 SS, WSF223 XD, WSF255, WSF255 SS and WSF255 XD Well Stimulation Pumps Seal - Remove and Install - Pony Rod Seal
WS223, WS223 SS, WS223 XD, WS255, WS255 SS, WS255 XD, WSP223, WSP255, WSF223, WSF223 SS, WSF223 XD, WSF255, WSF255 SS and WSF255 XD Well Stimulation Pumps Pinion Shaft - Remove and Install
WS223, WS223 SS, WS223 XD, WS255, WS255 SS, WS255 XD, WSP223, WSP255, WSF223, WSF223 SS, WSF223 XD, WSF255, WSF255 SS and WSF255 XD Well Stimulation Pumps Crankshaft - Remove and Install
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