1.4 ON/OFF control by INHIBIT
Power Supply operation requires the "ENABLE" signal to be connected to "Signal Return".
Logic of the "INHIBIT" signal is reversed to logic of the "ENABLE" signal.
Switch closed: Output OFF
Switch open: Output ON
SIGNAL RETURN, INHIBIT and ENABLE controls are isolated from the output terminals and -SENSE.
1.5 OUTPUT VOLTAGE PROGRAMMING by External Potentiometer
(Not applicable to supplies with PMBUS option).
Output Voltage of HFE1600 Series can be trimmed by potentiometer between approximately 80%-120% for 24V, 32V, 48V
and 80%-110% for 12V of nominal output voltage (For Output voltage limits see Graph below).
Fig-1.5
Fig-1.4
Fig 1-5
36
48
59
18
24
29
9.6
12
13.2
24
32
39.5
0
10
20
30
40
50
60
%
0
0
1
%
0
5
%
0
V OUT (V)
Viper position
Voltage Trimming by potentiometer
Fig 1-5
HFE1600-48
HFE1600-24
HFE1600-12
HFE1600-32
1.2 Basic configuration (Remote Sense)
For basic configuration:
•
± SENSE have to be connected to the ±V terminals on the Load side prior to operating the supply.
•
ENABLE input must be connected to SIGNAL RETURN in order for the supply to turn on.
ENABLE
B7
-SENSE
Voltage drop
on load connection
+V
+SENSE
A6~10
B9
B4
-V
A1~5
HFE1600
LOAD
+V
-V
B1
SIGNAL RETURN
Voltage drop
on load connection
Fig-1.2
ATTENTION: 1. Maximum voltage drop on load connection: HFE1600-12: 0.25V/wire, HFE1600-24: 0.5V/wire,
HFE1600-32: 0.75V/wire, HFE1600-48: 1V/wire.
2. Twisted wires should be used for Remote Sensing connection.
3. If Remote Sensing is used, do not break Main Output connection.
1.3 ON/OFF control by ENABLE
ENABLE
B7
HFE1600
B1
SIGNAL RETURN
Switch closed: Output ON
Switch open: Output OFF
Fig-1.3
SIGNAL RETURN and ENABLE control are isolated from the output terminals and “-SENSE”.
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