PDS51 Series
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3.2 Keypad Structure and Dimension Drawing
■ External Keypad Dimension
（
Unit
：
mm
）
Figure 3-2-1 Keypad Dimension
3.3 Mechanical Installation
3.3.1 Overheat Protection
If installed outdoors, to prevent overheating and performance degradation of the
equipment, in places with extreme heat, the high temperature may cause the controller to
shut down in self-protection. For best performance, avoid placing solar panels around any
obstructions that will cast shadows and reduce sunlight reaching these arrays.
Conduit is recommended to protect the wires from wildlife and natural weathering, and
to bury the conduit in the ground for added protection. If conduit is not used, a higher
quality outdoor cable should be used.
3.3.2 Installation Location
Although the applicable working ambient temperature of the PDS51 solar pump controller
can reach 60°C, in order to avoid failure caused by overheating, it is recommended to install
the controller in a shaded location.
Figure 3-3-2 Installation Location
