KEPCO KLP 10-150-2, User Manual

Page: 58 / 92

3-18
KLP070312
3.2.16.3 SYSTEM CONFIGURATION FUNCTIONS
The system configuration functions allow the user to determine 1) whether the Remote Inhibit
signal is an active TTL high or low and 2) how the unit recovers from a fault. The unit password
(see PAR. 3.2.7) is required to change these functions.
1. Enter
UTIL
menu (see PAR. 3.2.16, steps 1 through 3) and rotate either VOLTAGE or CUR-
RENT control until status display reads
SYST
.
2. Tap the DC OUTPUT switch to enter the System Configuration Functions menu.
3.2.16.3.1 REMOTE INHIBIT CONFIGURATION
The Remote Inhibit signal REM_INH is applied to analog I/O port, pin 8 (see PAR’s. 2.7.9 and
3.4.1). This signal can be configured to be active (inhibit the output) for either a TTL high or low.
1. Enter
UTIL
menu (see PAR. 3.2.16, steps 1 through 3) and rotate either VOLTAGE or CUR-
RENT control until status display reads
SYST
, then tap DC OUTPUT switch. Rotate either
VOLTAGE or CURRENT control until the status display reads
rINH
and the DC VOLTS dis-
play reads either
Hi
or
Lo
.
2. To change the remote inhibit setting, tap the DC OUTPUT switch. The status display shows
PASS
. Enter the unit password (see PAR. 3.2.7) and tap DC OUTPUT switch to accept the
number. When the password is accepted, the status display reads
rINH
and DC VOLTS dis-
play is blinking.
3. Rotate either VOLTAGE or CURRENT control until DC VOLTS display reads desired setting,
then tap DC OUTPUT switch to accept.
4. Tap FUNCTION switch to exit or rotate VOLTAGE or CURRENT control until status display
reads
RTN
, then tap DC OUTPUT switch to return to next highest menu.
3.2.16.3.2 FAULT RECOVERY CONFIGURATION
The KLP allows the user to control how the unit recovers from faults, and allows different
responses for different faults. This function is password-protected (see PAR. 3.2.7). The three
recovery options are PROT, SAFE and AUTO.
• PROTected - When a fault configured as PROT is detected, the output is disabled.
Recovery requires that the user turn the unit off and wait five seconds before turning the
unit on. After initializing, the output is disabled and the unit is in Setpoint mode, pro-
grammed to minimum values for voltage and current. This is the safest recovery option,
forcing the operator to reboot the power supply before programming and re-enabling the
output, hopefully after eliminating the cause of the fault. PROT is the factory default set-
ting for all fault recoveries. In addition, if the source power failure (PWR) recovery mode
is selected as AUTO, refer to “WARNING” on page 3-19 listed under AUTO description.
• SAFE - When a fault configured as SAFE is detected, the output is disabled and the unit
is returned to Setpoint mode, programmed to last settings (retrieved from the setpoint
registers) for voltage and current. Recovery requires that the user exit Setpoint mode
and re-enable the output, either from the front panel or via one of the digital program-
ming ports. Recovery cannot be initiated by toggling the remote inhibit line at the analog
programming port. This option provides greater operator convenience by eliminating the
need to reboot the power supply while preserving a safe response (output off), but it is