KEPCO BOP-GL 1KW Operator Manual Firmware Ver.3.05 and higher - Manual (Page 74)

3-12
BOP-1K-GL 022814
FIGURE 3-4. REMOTE SHUTDOWN USING INTERNAL POWER, MULTIPLE UNITS,
3.3.9.2 REMOTE ON-OFF USING TRIGGER PORT PIN 2
A standalone unit or a multiple unit configuration (parallel or series) can be set to output on
(enabled) or off (disabled) by applying a remote signal to the TRIGGER PORT as shown in Fig-
ure 3-5. For multiple unit configurations this signal must be applied to the master.
The factory default condition, established by the Reset Power-up configuration (see PAR.
3.3.2.1) is: when the signal is active (Logic 0 or short-circuit referenced to logic GND (pin 1), the
output is set to off after a maximum delay of 200 milliseconds and the front panel OUTPUT indi-
cator goes off. Logic 1 (TTL or 5V-CMOS) or open sets the output to ON (output enabled) and
the OUTPUT indicator goes on.
This logic can be reversed so that logic 1 sets output off, logic 0 sets output on, by setting S3-5
to off (0) as directed during the Reset Power-up (PAR. 3.3.2.1).
3.3.9.3 REMOTE ON-OFF USING TRIGGER PORT (OFF) AND DIGITAL COMMAND (ON)
This method of controlling the output uses Trigger Port pin 2 to turn the output off, and the
OUTP ON command to turn the output on (see Figure 3-5). This method requires that
OUTP:CONT STANDBY (see PAR. B.15) be sent first. OUTP:CONT STANDBY allows a logic 0
(or short-circuit) pulse (100
µS minimum) on pin 2 of the trigger port to turn off the output. A logic
1 or open circuit at Trigger port pin 2 has no effect on the output. Sending OUTP ON turns the
output on.
3.3.9.4 REMOTE ON-OFF USING DIGITAL COMMANDS
This method uses OUTP ON and OUTP OFF commands to control the output. This requires
that OUTP:CONT OFF command (see PAR. B.15) be sent first, disabling the Trigger port pin 2.
(If OUTP:CONT OFF is not sent, the state of Trigger port pin 2 will override the digital com-
mands.) To save the OUTP:CONT state for power-up, send MEM:UPD INT and tag the unit with
the new power-up configuration