KEPCO BOP 1KW-MG Operator Manual, Firmware Ver.2.38 to 2.47 - Manual (Page 41)

BOP HIPWR 080709
2-3
TABLE 2-2. IEEE 1118 CONNECTOR INPUT/OUTPUT PIN ASSIGNMENTS
CONNECTOR PIN SIGNAL NAME FUNCTION
IEEE 1118 (BITBUS)
PORT
(connector A1J4)
1, 3 (shorted) CONTROL BUS “A”
IEEE 1118, referenced to pins 5, 8
(2-Wire Differential Interface)
5, 8 (shorted) CONTROL BUS “B”
IEEE 1118, referenced to pins 1, 3
(2-Wire Differential Interface)
6 TERMINATOR
Connect to pin 5 or 8 to add an internal termination resistor
to first/last unit on the daisy chain.
TABLE 2-3. TRIGGER PORT PIN ASSIGNMENTS
CONNECTOR PIN SIGNAL NAME FUNCTION
TRIGGER PORT
(connector A1J3)
1 LOGIC GND Return for TRIGGER and SHUTDOWN signals.
2 SHUTDOWN
Logic 0 disables the output and puts the unit in standby, how-
ever Logic 1 (TTL or 5V CMOS level) does NOT enable the
output. STANDBY key or a remote OUTP ON command must
be used to enable the output. Response to this signal is rela-
tively slow (200mS max).
3 NOT USED
4 EXT. TRIGGER INPUT
Logic 0 causes a trigger event. Logic 1 (TTL or 5V CMOS
level) rearms the trigger feature.
TABLE 2-4. EXTERNAL PROTECTION CONNECTOR INPUT/OUTPUT PIN ASSIGNMENTS
CONNECTOR PIN SIGNAL NAME FUNCTION
EXT. PROTECT PORT
(connector A2A5J7)
1 SD_EXT_K
Cathode of LED optocoupler (through a 510 ohm resistor) which is
used for external isolated shutdown. Anode of LED is connected to
(A2A5J7) pin 2. A positive voltage (3.5 to 15V) at pin 2 (referenced to
pin 1) shuts down the unit functionality. The unit remains powered,
but no output is available and the red front panel FAULT LED will go
ON. Response is relatively fast (100
µ
S max.). To resume normal
operation it is necessary to cycle power off, then on (preferred) or
briefly press the RESET key on the front panel keypad.
2 SD_EXT_A
Anode of LED optocoupler which is used for external isolated shut-
down. (See pin 1 above.)
3 PG_EXT_C
Collector of optocoupler-transistor which is used for external isolated
“power OK” flag. Transistor emitter is connected to (A2A5J7) pin 4.
When unit is operating normally, transistor is saturated. Current
through transistor should not exceed 5mA and supply voltage should
not exceed 15V.
4 PG_EXT_E
Emitter of optocoupler-transistor which is used for external isolated
“power OK” flag. (See pin 3 above.)
5 EXT_C
Collector of optocoupler-transistor which is used for external isolated
“Output OFF” flag. Transistor emitter is connected to (A2A5J7) pin 6.
When output is OFF, transistor is saturated. Current through transis-
tor should not exceed 3mA and supply voltage should not exceed
15V. See NOTE below for alternate function.
6 EXT_E
Emitter of optocoupler-transistor which is used for external isolated
“output OFF” flag. (See pin 5 above.)
NOTE: Upon receipt of LIST:SET:TRIG command (PAR B.70), the Output Off flag (EXT_C/EXT_E) no longer represents output on/
off state. Instead, this signal can be used to trigger an external device. The transistor state (conducting or not conducting)
and the pulse width duration is controlled by the LIST:SET:TRIG command. Upon receipt of LIST:CLE command (PAR
B.47) the Output Off flag reverts to representing output on/off status as described above.