Asterion DC Multioutput ASA Series Operational Manual
M330516-01
4-5
24
CH3-OUTPUT-
ON/OFF-
STATUS
DIGITAL
OUTPUT
Output Signal, High state indicates output of the power supply is enabled.
Open collector transistor output, Collector is connected the 26-pin
connector. Emitter point of transistor is connected to common return pin
of the interface connector.
Signal return: Pin 26
Voltage Rating: Maximum 30V, Minimum 3V for Active High, Sink
Current: 50mA.
25
CH3-Remote
Inhibit
Input
Switch/
Relay
Contact
Switch/Relay contact closure or direct short from this terminal to signal
return is required to enable/disable the output of the power supply.
Opening the contact would disable the output. Upon contact closure, if
remote inhibit is selected as live mode, the fault would be cleared, and
output could be enabled from the front panel or by issuing the SCPI
command.
If remote inhibit is selected as Latch mode, the output will be disabled,
Output could not be enabled upon the contact closure. Fault should be
cleared by issuing the SCPI command OUTP<n>:PROT:CLE or by
clearing the fault from the front panel screen.
Remote circuit must sink up to 10mA from 5 VDC to enable.
Signal return: Pin 26
26
RTN
RETURN
Return/GND. Pins 8,17 and 26 are shorted internal to the power supply.
Table 4-1: External user interface control connector pin out details
CAUTION!
All the three channels signal returns (Pin 8, 17 and 26) are shorted internally to the
power supply. Applying a voltage potential between them would damage the power
supply.
CAUTION!
External User Control interface signals are isolated from negative output terminal;
Isolation voltage is rated for
±
600 V
RMS
, maximum; operation of Isolated Analog
Interface signals should be at SELV safety voltage conditions to chassis ground.
4.2
Remote Inhibit (Switch/Relay Contact Closure)
Remote External user interface (26 pin connector) provided with remote inhibit inputs
for each channel; refer Table 4-1 for pin out details. A contact closure or direct shot
between Remote Inhibit terminal and Return pin, will allow the output voltage to be
programmed and enable the output.
Alternatively, open circuit between remote inhibit terminal and return will disable the
Output.
The external user interface connector (26 pin connector) is supplied with a mating
connector. This connector is provided with the remote inhibit connected (direct short)
for all the channels.
A contact closure or direct shot between Remote Inhibit terminal and Return pin
between Pins 7 and Pin 8 will permits the channel 1 output to Turn ON; refer Figure
4-2 for connection requirements.