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TECHN I CAL SP ECI FI CATI ON S – R ECTIFIER
Module Present Signal : This signal has dual functionality. It can be
used to alert the system when a module is inserted. A 500Ω resistor is
present in series between this signal and Logic_GRD. An external pull-
up should not raise the voltage on the pin above 0.25Vdc. Above 1Vdc,
the write_protect feature of the EEPROM isenabled.
Protocol Select: Establishes the communications mode of the power
supply. No connect for analog/I2C. For RS485, connect 10kΩ pull-down
resistor to 54_OUT(-DC).
Enable : On/Off control when PMBus communications are utilized as
configured by the Protocol pin. This pin must be pulled low to turn ON
the power supply. The power supply will turn OFF if either the Enable or
the ON/OFF pin is released. The Enable function does not exist for the
RS485 protocol. This signal is referenced to Logic_GRD.
ON/OFF : This is a short pin utilized for hot-plug applications to ensure
that the power supply turns OFF before the power pins are disengaged.
It also ensures that the power supply turns ON only after the power pins
have been engaged. Must be connected to Vout ( - ).
Alarm Table
Power Supply LED State
Output Signals
Alert #: PMBus interrupt signal.
Fault: This signal goes LO for any failure that requires rectifier
replacement. Some of these faults may be due to:
? Fan failure
? Over-temperature condition
? Over-temperature shutdown
? Over-voltage shutdown
? Internal Rectifier Fault
Power Capacity: A HI on this pin indicates that the rectifier delivers
high power (2725W @ ≤240V, 2000W @ 277V) operation; a LO indicates
rectifier configured for 1200W operation.
Monitoring Signals
(Referenced t o Logic_GRD)
Condition
OK
Thermal Alarm
AC OK
Green
1
1
DC OK
Green
1
1
Service
Amber
0
1
Fault
Red
0
0
Fault
HI
HI
OTW
HI
LO
PFW
HI
HI
Module
Present
LO
LO
(5C before shutdown)
Non-catastrophic Internal Failure
ThermalShutdown
Defective Fan
Blown AC Fuse in Unit
No AC <15mS (single unit)
AC Present but not within limits
AC not present 1
Boost Stage Failure
Over Voltage Latched Shutdown
Over Current
2
1
1
1
0
Blinks
0
1
1
1
1
0
0
0
1
0
0
0
0
Blinks
1
1
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
1
1
0
1
LO
LO
LO
HI
HI
HI
LO
LO
HI
LO
LO
HI
HI
HI
HI
HI
HI
HI
HI
HI
LO
LO
LO
LO 3
LO
LO
LO
LO
LO
HI
LO
LO
LO
LO
LO
LO
LO
LO
LO
LO
1 Missing Module
HI 4
Standby (remote)
Service Request (PMBus mode)
Communications Fault
(RS485 mode)
1
1
1
0
1
1
0
Blinks
0
0
0
Blinks
HI
HI
HI
HI
HI
HI
LO
HI
HI
LO
LO
LO
1
2
3
4
This signal is correct if the rectifier is back biased from other rectifiers in the shelf .
Any detectable fault condition that does not result in the power supply shutting down. For example, ORing FET failure, boost section out of regulation, etc.
Signal transition from HI to LO is output load dependent
Signal must be pulled HI external to the module
Page 7
03/12 Compact Power Line
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