Table of Contents
Advertisement
TABLE 2-2. IEEE 1118 CONNECTOR INPUT/OUTPUT PIN ASSIGNMENTS
CONNECTOR
IEEE 1118 (BITBUS)
PORT
(connector A1J4)
CONNECTOR
TRIGGER PORT
(connector A1J3)
TABLE 2-4. EXTERNAL PROTECTION CONNECTOR INPUT/OUTPUT PIN ASSIGNMENTS
CONNECTOR
EXT. PROTECT PORT
(connector A2A5J7)
NOTE: Upon receipt of LIST:SET:TRIG command (PAR B.70), the Output Off flag (EXT_C/EXT_E) no longer represents output on/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.
BOP HIPWR 080709
PIN
SIGNAL NAME
1, 3 (shorted)
CONTROL BUS "A"
5, 8 (shorted)
CONTROL BUS "B"
6
TERMINATOR
TABLE 2-3. TRIGGER PORT PIN ASSIGNMENTS
PIN
SIGNAL NAME
1
LOGIC GND
2
SHUTDOWN
3
NOT USED
4
EXT. TRIGGER INPUT
PIN
SIGNAL NAME
1
SD_EXT_K
2
SD_EXT_A
3
PG_EXT_C
4
PG_EXT_E
5
EXT_C
6
EXT_E
IEEE 1118, referenced to pins 5, 8
(2-Wire Differential Interface)
IEEE 1118, referenced to pins 1, 3
(2-Wire Differential Interface)
Connect to pin 5 or 8 to add an internal termination resistor
to first/last unit on the daisy chain.
Return for TRIGGER and SHUTDOWN signals.
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).
Logic 0 causes a trigger event. Logic 1 (TTL or 5V CMOS
level) rearms the trigger feature.
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
operation it is necessary to cycle power off, then on (preferred) or
briefly press the RESET key on the front panel keypad.
Anode of LED optocoupler which is used for external isolated shut-
down. (See pin 1 above.)
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.
Emitter of optocoupler-transistor which is used for external isolated
"power OK" flag. (See pin 3 above.)
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.
Emitter of optocoupler-transistor which is used for external isolated
"output OFF" flag. (See pin 5 above.)
FUNCTION
FUNCTION
FUNCTION
µ
S max.). To resume normal
2-3
Advertisement
Table of Contents
