Spray pump with a standby, that fire control room to spray pump control line, fire linkage line K need a few?
If the control cabinet with self-locking, then start two lines, start feedback two lines, stop two lines, stop feedback two lines, a total of eight lines, you can also stop the feedback line to cancel, so that the 6 line is ok.If you are using a multi line module, the multi line module in the control cabinet, multi line module requires two lines, sending past two 24V power line, a total of 4 with the line on the line, with or without locking, the premise is that you have to stop the multi line port module.In general, without self locking is easier to save, with self locking more than twice the effort.
See if the second control cabinet, control cabinet with self-locking device, it needs two starting line and two feedback line can, starting line to start the pump signal at the same time, the feedback signal to the host signal to start fire, stop the pump stopped.
First of all, the water pump, regardless of a few spare pumps, as long as the main pump does not come, the control cabinet will automatically switch to the standby pump, the standby pump is not you worry about.
This depends on your control room host manufacturer, different manufacturers design "multi line" system is different.The least to 2 lines, and more to 6-8 lines in order to achieve the start and stop control.But no matter what kind, as long as the control of the main pump can be, the main pump backup in the water pump control cabinet to complete
