Instructions; Hmi Features - ABB REX 521 Operator's Manual
Protection relay
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Also See for REX 521:
- Technical reference manual, standard configurations (250 pages) ,
- Technical reference manual, general (76 pages) ,
- Operating manual (20 pages)
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1MRS 751107-MUM
3.
3.1.
Protection Relay
Operator's Manual
Instructions
HMI features
• Push-buttons for navigating, [C] Clear/Cancel and [E] Enter
• Language selection
• Setting values are protected by passwords
• Display backlight
• Display contrast
• Display test
• Selection of primary values
• Optically isolated serial communication port
• Three LED indicators
• Eight programmable alarm LEDs
REX 521
9
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