Pwr (green), Led out 1 (yellow), Led out 2 (yellow) – Rockwell Automation 937CU-DIFRQ_1 Universal Frequency Converter Installation Instructions User Manual
Page 9: Led out 3 (yellow), Rs 232 serial interface, Display, For displaying the supply voltage, Indicates relay 1 active, Indicates relay 2 active, Indicates transistor active
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Bul. 937
C Universal Frequency Converter Installation Instructions
Display Modes and Operation
Front side of the Universal Frequency Converter
LED Indicators
IN CHK 1
• Flashing yellow cyclically - indicates input pulses
• Flashes red - indicates input malfunction
• Continuous red - indicates device malfunction
PWR (green)
• For displaying the supply voltage
LED OUT 1 (yellow)
• Indicates relay 1 active
LED OUT 2 (yellow)
• Indicates relay 2 active
LED OUT 3 (yellow)
• Indicates transistor active
RS 232 serial interface
• For connection to a PC for configuration and diagnosis of the
universal frequency converter using FDT
Display
• Shows measurement values and malfunctions and for
parameterization mode
•
(Up)
(Down) ESC (Escape) OK
• Four keys for parameterization on the universal frequency
converter
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PWR
1
OUT
2
1
3
RS232
IN
CHK
ok
esc
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3
2
1