Owner manual

26 Rockwell Automation Publication 1420-UM001D-EN-P - September 2013
Chapter 3 Unit Configuration
Configuration Flow Chart
• 10 CHANGE PAS: this function lets you modify the
PASS value with a new value (from 0…9999).
• 20 BACKLIGHT: adjusts backlight time from
0…255 minutes (0 = always on).
• 50 SYSTEM: this function lets you select the type of
electrical system.
Refer to pages 17
…18 for descriptions and wiring
diagrams corresponding to the system type
designations, such as, 3P and 3P.n.
• 60 CT RATIO: this function lets you select the value
of the CT ratio (primary/secondary ratio of the
current transformer being used). Example: if the CT
primary (current transformer) has a current of 300 A
and the secondary a current of 5 A, the CT ratio
corresponds to 60 (300 divided by 5).
• 70 PT RATIO: this function lets you select the value
of the PT (VT) ratio (primary/secondary ratio of the
potential/voltage transformer being used). Example:
if the primary of the connected PT is 20 kV and the
secondary is 100V, then the PT ratio corresponds to
200 (20,000 divided by 100).