KEPCO ABC-DM SERIES - Manual (Page 85)

ABC 040104
B-15
protection level can be programmed independently of the output voltage level. Setting voltage protec-
tion to a value lower than the output voltage causes the voltage protection mechanism to trigger
immediately. (See example, Figure B-6.)
B.65
[SOURce:]VOLTage:PROTection[:LEVel]?
QUERY
VOLT:PROT?
Syntax: Short Form: [SOUR:]VOLT:PROT[:LEV] MIN, MAX
Long Form: [SOURce:]VOLTage:PROTection[:LEVel] MIN, MAX
Return Value: = digits with decimal point and Exponent, e.g., 2.71E+1 for 27.1
Description: Identifies overvoltage protection setting, maximum allowable overvoltage protection, or mini-
mum overvoltage protection. VOLT:PROT? returns value set by VOLT:PROT. VOLT:PROT? MAX
returns maximum voltage protection value (see Table 1-2 ); this value is determined at the factory and
cannot be changed by the user. VOLT:PROT? MIN returns the minimum voltage protection value
(always 0). (See example, Figure B-6.)
FIGURE B-6. PROGRAMMING VOLTAGE
B.66
[SOURce:]VOLTage:PROTection:CLEar
COMMAND
VOLT:PROT:CLE
Syntax: Short Form: [SOUR:]VOLT:PROT:CLE Long Form: [SOURce:]VOLTage:PROTection:CLEar
Description: Clears overvoltage condition. Output programmed to 0V; current limit programmed to small value
(approximately 1% of full scale current rating). Overvoltage Protection Tripped is reset so that
VOLT:PROT:TRIP? returns 0. Related Commands: VOLT:PROT, VOLT:PROT:TRIP?. (See example,
Figure B-6.)
NOTES: 1. The power supply is assumed to be operating in constant voltage (CV) mode.
2 Examples below are intended only to illustrate command functions. Refer to PAR. 3.3.8.1 for pro-
gramming techniques to optimize performance
VOLT 21; CURR 1.1 Power supply programmed to 21V, 1.1A.
VOLT 2.157E1 Power supply programmed to go to 21.57V.
VOLT? Returns 2.157E1, indicating programmed voltage = 2.157V.
VOLT? MAX For ABC 135-1DM, returns 135 (135V).
VOLT? MIN Returns 0 (minimum allowable voltage).
VOLT:PROT 2.365E+1 Voltage protection set to 23.65V.
VOLT? Returns 21.57, indicating programmed voltage value = 21.57V.
VOLT:PROT? Returns 2.365+E1, (programmed overvoltage protection = 23.65V
VOLT:PROT?MAX For ABC 10-10DM, returns 11.
VOLT:PROT:TRIP? 0 indicating overvoltage protection not tripped.
--- OVERVOLTAGE CONDITION OCCURS.
VOLT:PROT:TRIP? 1 indicating overvoltage protection tripped.
VOLT:PROT:CLE Overvoltage condition cleared.
VOLT:PROT:TRIP? 0 indicating overvoltage condition not tripped.
VOLT? Returns 0, programmed voltage value = 0V.
VOLT 21; CURR 1.1 Power supply programmed to go to 21V, 1.1A.
VOLT? Returns 21.
VOLT:LIM:HIGH 5 Voltage limit set to 5V.
VOLT:LIM:HIGH? Returns 5.
VOLT 33 Power supply programmed to 5V.
SYST:ERR? Error message -301 “Value bigger than limit.”
VOLT? Returns 5.