TDK-Lambda Genesys - Page 97

91
83532002 Rev C
Conditional Registers
The fault Condition Register and the Status Condition Register are read only registers
that the user may read to see the condition of the Power Supply. Refer to Table 8-8 for
description of the Fault Condition Register bits and Table 8-9 for the Status Condition
register bits.
Table 8-10: Fault Condition Register (FLT?)
BIT Fault name Fault symbol Bit Set condition Bit Reset condition
0 (LSB) Spare bit SPARE Fixed to zero Fixed to zero
1 AC Fail AC AC fail has occurred. The AC input returns to normal.
2 Over
temperature
OTP OTP shutdown has
occurred.
The power supply cools down.
3 Foldback FOLD Foldback shutdown has
occurred
The supply Output is turned On by
front panel button or OUT 1 command.
4 Over voltage OVP OVP shutdown has
occurred.
The supply Output is turned ON by
front panel button or OUT 1 command.
5 Shut Off SO Rear panel J1 “Shut Off”
condition has occurred.
Rear panel J1 “Shut Off” condition
removed.
6 Output Off OFF Front panel OUT button
pressed to Off.
The supply Output is turned On by
front panel button or OUT 1 command.
7(MSB) Enable ENA Rear panel J1 Enable
terminal (J1-1 & J1-14)
opened.
Rear panel J1 Enable terminals
closed.
Table 8-11: Status Condition Register (STAT?)
BIT Fault name Fault symbol Bit Set condition Bit Reset condition
0 (LSB) Constant
Voltage
CV Output is On and the
supply in CV.
Output is ON and the supply is not in
CV.
1 Constant
Current
CC Output is ON and the
supply in CC.
Output is ON and the supply is not in
CC.
2 No Fault NFLT
The power supply is
operating normally or
fault reporting is not
enabled.
See “OUT n” command
in Section 8.7.5.
One or more faults are active and fault
reporting is enabled (using “FENAxx”).
3 Fault active FLT One or more faults are
enabled and occur.
Fault Event Register cleared (FEVE?).
4 Auto-Restart
Enabled
AST Supply is in Auto-Restart
mode (from Front Panel
or serial command).
Supply is in Safe-Start mode (from
Front Panel or serial command).
5 Fold
Enabled
FDE Fold protection
enabled (from Front
Panel or serial
command).
Fold protection disabled (from Front
Panel or serial command).
6 Spare bit SPARE Fixed to zero. Fixed to zero.
7(MSB) Local Mode LCL Supply in Local mode. Supply in Remote mode or Local-
Lockout mode.
8.11.2. Service Request: Enable and Event Registers
The conditional Registers are continuously monitored. When a change is detected in a
register bit, which is enabled, the power supply will generate an SRQ message.
The SRQ message is: “Inn” terminated by CR, where the nn is the power supply Address.
The SRQ will be generated either in Local or Remote mode.
Refer to Tables 8-10 through 8-13 for details of the Enable and Event registers.