Operation

 

Command Reference

 

 

 

Command

Description

 

DLY <seconds>

Sets a programmable time delay employed by the supply before reporting

 

fault conditions. The power supply uses the time delay after receiving a new

 

output voltage or current setting via VSET or ISET, or after receiving RST,

 

TRG, or OUT ON commands. During the time delay, the power supply

 

disables CV, CC, and FOLD conditions from generating faults, preventing

 

possible nuisance foldback if the supply momentarily switches modes while

 

changing an output setting.

 

Range: 0 to 32 seconds, with 32ms resolution

 

Initial value: 0.5 second

 

 

 

DLY?

Asks for the setting of the programmable time delay before the supply

 

reports fault conditions.

 

Response: DLY <seconds>

 

 

 

ERR?

Asks for the most recent remote programming error. When the power

 

supply detects a programming error, it lights the ERR LED and sets the

 

ERR bit in the accumulated status and fault registers. If the error bit has

 

been masked using the MASK command, then the ERR bit in the registers

 

will not set. Once an error is detected, the remaining portion of the

 

command line is discarded. An error query clears the ERR bit in the

 

accumulated status register. See “Error Codes” on page 49.

 

Response: ERR <error number> Example: ERR 0 (if no error)

 

FAULT?

Asks for the state of the fault register. A bit is set in the fault register when a

 

fault arises for that condition. Lists the conditions which activate a fault bit.

 

You can use the MASK command to disable bits from being set in the fault

 

register.

 

When a bit is set in the fault register it also asserts a signal on the J21-4

 

user signal line. You can tie the J21-4 fault line signal to the power supply's

 

own External Shutdown user line, J21-1, so that the shutdown signal goes

 

low (active) in the case of a user-defined fault.

 

The FAULT? query clears bits in the supply's fault register and fault line.

 

Response: FAULT <fault mask> where fault mask is the decimal equivalent

 

of the total bit weights for the operating conditions as listed in the fault

 

register. See “Accumulated Status, Status, and Fault Registers” on page

 

47.

 

FOLD

Sets foldback mode for the supply. Foldback protection disables the power

<2/CC>, <1/CV>,

supply output when the output enters the fold condition. Reset with the RST

<0/OFF>

command.

 

Example: Specify FOLD 1 or FOLD CV (Constant Voltage) when you want

 

the supply to operate in Constant Current mode and have foldback

 

protection disable the output if the supply switches to Constant Voltage

 

mode.

 

Initial value: FOLD 0/OFF

 

Release 1.2

41

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Xantrex Technology RS232-XPD manual Response DLY seconds