Delta MCS-600 Power Shelf
Installation, Operations and
Maintenance Manual
REV.: 03
4-2
Customer Specification Confidential
FL/EQU
- Function
This button is used to manually select SMR into float or equalize
state.
HVSD RST
- Function
When SMRs shut down resulting from DC high voltage. This
button is used to reset alarm state.
SMR RST
- Function
System will detect RFA warning when SMRs are turned off.
However, if the button is pushed at this time, the system will stop
sending the warning.
4.2.3 Indicators
Table 15 displays the ALU indicators.
Table 15 ALU Indicators
Indicator Color Function
Description
LED1 Green
FL System
Float
State
LED2
Yellow
EQU
System Equalize State
LED3
Red
HV
DC High Voltage Alarm-Minor
LED4
Red
LV
DC Low Voltage Alarm-Minor
LED5 Yellow MIN System
Minor
Alarm
LED6
Red
MAJ
System Major Alarm
LED7
Red
HVSD
High Voltage Shutdown (DC)
LED8
Red
AC FAIL
Loss of AC Input
LED9
Red
FUSE ALM
DC Output Fuse Open or Breaker SW. Trip
LED10
Red
LVDS OPEN Low Voltage Disconnect Open
4.2.4 Relay Output
Table 16 displays the relay output.(Please refer to Figure 6)
Table 16 Relay Output
Relay Function
Description
Relay1 ACF
AC
Failure
Relay2 MAJ
Major
Alarm
Relay3 HVSD
High
Voltage
Shutdown
Relay4
HV
DC High Voltage Alarm-Minor
Relay5
LV
DC Low Voltage Alarm-Minor
Relay6 LVD
Low
Voltage
Disconnect
Open
Relay7 FA
Fuse
Alarm
Relay8 MIN
Minor
Alarm
4.2.5 ALU Alarm Signal Descriptions
