7.11.3 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 7-11 to 7-14 for details of the Enable and Event registers.

1. Fault Enable Register

The Fault Enable Register is set to the enable faults SRQs.

Table 7-10: Fault Enable Register

BIT

Enable

Fault symbol

Bit Set condition

Bit reset condition

bit name

 

 

 

 

0 (LSB)

Spare bit

SPARE

 

 

 

 

 

 

 

1

AC Fail

AC

 

User command: “FENA nn”

 

 

 

 

 

 

 

User command:

where nn is hexadecimal (if

2

Over Temperature

OTP

 

 

 

“FENA nn” where

nn=”00”, no fault SRQs will

3

Foldback

FOLD

nn is hexadecimal

be generated).

 

 

 

 

 

4

Over Voltage

OVP

 

 

 

 

 

 

 

5

Shut Off

SO

 

 

 

 

 

 

 

6

Output Off

OFF

 

 

 

 

 

 

 

7(MSB)

Enable

ENA

 

 

 

 

 

 

 

2. Fault Event Register

The Fault Event will set a bit if a condition occurs and it is Enabled. The register is cleared when FEVE?, CLS or RST commands are received.

Table 7-12: Fault Event Register

BIT

Enable

Fault symbol

Bit Set condition

Bit reset condition

bit name

 

 

 

 

0 (LSB)

Spare bit

SPARE

 

 

 

 

 

 

 

1

AC Fail

AC

Fault condition

Entire Event Register is

 

 

 

 

 

 

occurs and it is

cleared when user sends

2

Over Temperature

OTP

 

 

 

enabled.

“FEVE?” command to read

3

Foldback

FOLD

The fault can set a

the register.

 

 

 

bit, but when the

“CLS” and power-up also

4

Over Voltage

OVP

fault clears the bit

clear the Fault Event Regis-

 

 

 

remains set.

ter. (The Fault Event Regis-

5

Shut Off

SO

 

ter is not cleared by RST)

 

 

 

 

 

 

 

 

 

6

Output Off

OFF

 

 

 

 

 

 

 

7(MSB)

Enable

ENA

 

 

 

 

 

 

 

66

83-515-000 Rev. B

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TDK 5KW technical manual Service Request Enable and Event Registers, Fault Enable Register, Fault Event Register
Page 73 Page 75

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