TDK-Lambda Genesys GENH Series - Page 85

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7.8.2 Conditional registers
7.8.3 Service Request: Enable and Event Registers
The conditional Registers arecontinuously monitored. Whenachange is detectedina
registerbit which is enabled, the power supplywill generate an SRQ message.
The SRQ message is: "!nn" terminated by CR, wherethe nn is thepower supply address.
The SRQ will be generatedeither in Local or Remote mode.
Output is ON and the supplyis not in
CV.
Output is On and the
supplyinCV.
Output is ON and the supplyis not in
CC.
Output is ON and the
supplyin CC.
The power supply is
operating normally or
fault reporting is not
enabled.
See “OUT n”
command in Section
7.7.5.
One or morefaults are active and
faultreportingis enabled (using
“FENA xx”).
1
2
Constant
Voltage
Constant
Current
No Fault
Table7-8: Fault Condition Register
BIT
Fault name
Fault symbol
Bit Set condition
Bit Reset condition
Fixed to zero
Fixed to zeroSPARESparebit
0 (LSB)
The AC input returnsto normal.
AC fail has occurred.
OTP shutdown has
occurred.
The power supply cools down.
Foldback shutdown
has occurred.
The supply output is turned On by
front panel buttonor OUT 1
command.
The supply output is turned On by
front panel buttonor OUT 1
command.
The supply output is turned On by
front panel buttonor OUT 1
command.
OVP shutdown has
occurred.
Rear panelJ"Shut
Off" condition has
occurred.
Rear panel J1 "Shut Off" condition
removed.
Front panel OUT
button pressed to Off.
Rear panel J1 Enable
terminals(J1-1&J1-14)
opened.
Rear panel J1 Enableterminalsclosed.
1
2
3
4
5
6
7(MSB)
AC Fail
Over
temperature
Foldback
Over
voltage
Shut Off
Output Off
Enable
AC
OTP
FOLD
OVP
SO
OFF
ENA
Table7-9:Status Condition Register
BIT
Status name
Status symbol
Bit Set condition
Bit Reset condition
0 (LSB)
CV
CC
NFLT
One or more faults are
enabled and occur.
Fault Event Register cleared (FEVE?).
Supplyisin Auto-
Restart mode (from
Front Panel or serial
command).
Supplyisin Safe-Startmode (from
Front Panelorserialcommand).
Foldprotection
enabled (fromFront
Panel or serial
command).
Foldprotectiondisabled (fromFront
Panel or serial command).
Fixed to zero.
Fixed to zero.
Supplyin Local mode.
Supplyin Remote mode or Local-
Lockout mode.
3
4
5
6
7 (MSB)
Fault
active
Fold
Enabled
Sparebit
Local Mode
FLT
FDE
SPARE
LCL
AST
Auto-
Restart
Enabled
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Refer to Tables 7-10 to 7-13 for details of the Enable and Event registers.
The Fault Enable Register is set to the enable faults SRQs.
1.Fault Enable Register
2.Fault Event Register
The Fault Event will setabit ifacondition occurs and it is enabled. The register is cleared when
FEVE?, CLS or RST commands are received.
Table 7-10: Fault Enable Register
BIT
Enable
bit name
Fault symbol
0 (LSB)
1
2
3
4
5
6
7(MSB)
Spare bit
AC Fail
Over Temperature
Foldback
Over Voltage
Shut Off
Output Off
Enable
SPARE
AC
OTP
FOLD
OVP
SO
OFF
ENA
Bit Set condition
Bit reset condition
User command:
"FENA nn" where
nn is hexadecimal
User command: "FENA nn"
where nn is hexadecimal (if
nn="00", no fault SRQs will
be generated).
Table 7-11: Fault Event Register
0 (LSB)
1
2
3
4
5
6
7(MSB)
Spare bit
AC Fail
Over Temperature
Foldback
Over Voltage
Shut Off
Output Off
Enable
SPARE
AC
OTP
FOLD
OVP
SO
OFF
ENA
Entire Event Register is
cleared when user sends
"FEVE?" command to read
the register.
"CLS" and power-up also
clear the Fault Event
Register. (The Fault Event
Register is not cleared by
RST)
BIT
Event
bit name
Fault symbol
Bit Set condition
Bit reset condition
Fault condition
occurs and it is
enabled.
The fault can set
a bit, but when
the fault clears
the bit remains
set.
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