KEPCO BOP-GL 1KW, Operator'S Manual

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BOP-1K-GL 111315
VOLT:PROT 10 Sets the positive and negative protection to 10 volts.
VOLT:PROT:MODE LESS Allows protect limit to be automatically selected from either 1)
the external analog voltage applied to the Analog I/O port or 2)
10V set by VOLT:PROT 10. Whichever limit has a lower abso-
lute value (closest to zero) has effect.
FUNC:MODE CURR Sets the output to current mode.
CURR:MODE EXT Sets main channel (current channel) to use an external level
applied to the Analog I/O port.
To restore the above settings for power up, send *SAV2. This saves the settings to memory
location 2 (locations 1 through 15 can be used to establish initial power-up conditions). Set
power-up switch S3 to 00010 to (S3-2 to 1) when performing a normal power-up (PAR. 3.3.2.2)
to restore the saved settings from location 2 upon power up: Current mode, External limits
enabled, limit to be the lesser of 10V (digital) or external limit signals applied to Analog I/O port.
3.4.3 MONITORING OUTPUT CURRENT USING AN ANALOG SIGNAL
The BOP provides output analog signals which are always available, 0 to ±10V, proportional to
the output current and voltage. The current monitor signal is available at pin 3, referenced to pin
4, of the Analog I/O port. The voltage monitor signal is available at pin 15, referenced to pin 4, of
the Analog I/O port.
3.5 DIGITAL CONTROL
3.5.1 PASSWORD PROTECTION
The Password is only effective when using digital control. The commands that can be password
protected are SYST:SEC:IMM and all CALibration commands. When the unit is shipped, the
password is set to DEFAULT. Refer to PAR B.139 to set a new password.
Before performing calibration or sending SYS:SEC:IMM, first send SYST:PASS:CEN (see PAR
B.137). When calibration is complete or when SYST:SEC:IMM has been executed, it is recom-
mended that the password state be disabled using SYST:PASS:CDIS (see PAR B.138).
3.5.2 SETTING OPERATING MODE (VOLTAGE OR CURRENT)
The BOP uses two separate channels, one to set output voltage or current and one to set the
corresponding protection limit. When using digital control, the main channel is determined by the
FUNC:MODE command which selects either Voltage mode or Current mode, or allows the sta-
tus of Analog I/O port pin 2 to determine the mode (see PAR. 3.3.9 for details). The limit channel
is determined automatically by the main channel selected. When Voltage mode is selected, the
current protection limit channel is active, and when Current mode is selected, the Voltage pro-
tection limit channel is active.
3.5.3 PROGRAMMING VOLTAGE OR CURRENT AND ASSOCIATED PROTECT LIMITS
When the operating mode is Voltage mode, use the VOLT command (see PAR. B.86) where
<exp_value> = digits with decimal point and Exponent, e.g., 2.71E1 for 27.1. For example, send
VOLT 2.71E1 to set output voltage to 27.1 Volts in voltage mode.