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Chapter 1 System Description 7
ACTURA Flex 48330 Power System User Manual
Table 1-3 Function of indicators
LED Normal Abnormal Cause of abnormality
OFF No AC Mains Supply
Power indicator (green) ON
Blinking Rectifier is under control by SCU
ON
AC input over/under voltage, PFC
over/under voltage and over temperature
Protection indicator
(yellow)
OFF
Blinking Communication of rectifier with SCU failure
ON Output Over-voltage
Alarm indicator (red) OFF
Blinking Fan Failure
1.5.3 SCU
Outline
Figure 1-5 Outline of SCU
Dimension (H % W % D):132mm % 85mm % 287mm
Weight: 0.76kg
Multi-Communication mode
SCU communicates with MC (Main Computer) through the RS232/MODEM
communication port and 8 groups of alarm dry contacts on the Signal Junction
Board.
SCU supports both China Telecom Communication Protocol and EEM Protocol.
Make sure that the baud rates for receiving and transmitting are set to be
consistent when using SCU.
1. Communication through RS232
RS232 communication mode is mainly used for short-distance point-to-point
communication. The communication distance shall be less than 15m. If SCU
communicates with MC through RS232, just connect SCU RS232 port to the
RS232 port of MC.
2. Communication through MODEM or ES-MOD