Page 14 Connections
Figure 3: CVT485 Connection
Using an External Power Input
When an external power input is used as a backup power supply,
or when the power lines of a RS485 adapter module (CVT485) are
used to power the PCS250, the following connections are
required:
• Screw 1 = +12V
•Screw 2 = ground
The maximum wire length for each of those power lines is as
follows:
• 12m (40 ft.) for AWG24
• 20m (65 ft.) for AWG22
• 30m (100 ft.) for AWG20
• 50m (160 ft.) for AWG18
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