SDS Series
59
Cable Size Guide
The chart shows the varying degree of performance in relationship to number of valves run-
ning, cable size, distance and operating pressure. The tests were performed using actual ca-
ble lengths and in workshop test conditions. High resistance and intermittent connections
can effect the performance of the back-channel and valve actuation.
For optimum performance try and ensure that groups of valves operating at the end of the
two-wire cable are split so some operate closer to the controller.
The model SDS-50 controller has a maximum capacity to operate 4 valves at one time with
an additional master valve or pump. The chart below is based on model SD2NC DataCoil™
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