2
HSF (M) 300W 042315
2.
SPECIFICATIONS
Table 2 contains specifications and operating limits of individual HSF 300W Series M and MZ
models. Table 3 contains specifications and operating limits common to all HSF 300W Series M
and MZ Models. These specifications are at nominal input voltages at 25°C unless otherwise
specified.
TABLE 1. HSF REAR CONNECTOR PIN ASSIGNMENTS
Signal
Name
Pin
Function
1, 2, 4
DC output (+) applied to load.
Output –
3, 5, 6
DC Output (–) applied to load.
SENSE–
7
Sense– connection
IMON+
8
Current (sense resistor).
SENSE+
9
Sense+ connection
NO
10
Normally Open contact of alarm relay, referenced to AL COM, pin 14 (see PAR. 3.8.2.1).
IMON–
11
Current Monitor– (sense resistor).
–COM
12
–Signal Common provides return for REF, pin 15, and RV, pin 18, signals.
NC
13
Normally Closed contact of alarm relay, referenced to AL COM, pin 14 (see PAR. 3.8.2.1).
AL COM
14
Common contact of alarm relay (see PAR. 3.8.2.1).
REF
15
Reference voltage. When used with RV, pin 18, allows all output voltages of paralleled slave supplies to be
controlled by one voltage adjustment of a master power supply. When REF is connected to RV via an
external trimmer, the external trimmer determines output voltage (see PAR. 3.4.2). Connections are made
via DIP switches (see PAR. 3.1).
+PF
16
+Power Fail of open-collector alarm circuit. Used with –PF, pin 19 (see PAR. 3.8.2.2).
CSB
17
Current Share Bus - Used whenever several power supplies are connected in parallel (see PAR. 5.).
RV
18
Remote Voltage - Used with REF, pin 15, for remotely controlling the output voltage (see PAR. 3.4.2)
–PF
19
–Power Fail of open-collector alarm circuit. Used with +PF, pin 16 (see PAR. 3.8.2.2).
+RC
20
+Remote On-off used with –RC, pin 21, to allow remote turn-on turn-off of the unit (see PAR. 3.4.3)
–RC
21
–Remote On-off used with +RC, pin 20, to allow remote turn-on turn-off of the unit (see PAR. 3.4.3)
GND
22
AC input ground
N
23
AC Input neutral
L
24
AC input line
