2.1. Remote sensing and current balance
2. PARALLEL OPERA TION
Fig 2-1
For best accuracy and current balance, each unit should be trimmed separately as shown
in Fig 1-2. The parallel units can be trimmed also by a single trimmer as shown in Fig 2-2.
2.2. Output voltage trimming
LOAD
FPS1000 #1
SIG.
RTN
ON/
OFF
+V
+S
-S
-V
CS
+S
-S
FPS1000 #2
SIG.
RTN
ON/
OFF
+V
+S
-S
-V
CS
+S
-S
+S
-S
FPS1000 #N
SIG.
RTN
ON/
OFF
+V
+S
-S
-V
CS
+S
-S
+V
-V
7
10
15
7
10
15
7
10
15
Fig 2-2
FPS1000 #1
SIG.
RTN
ON/
OFF
V TRIM
+S
-S
CS
SIG.
RTN
ON/
OFF
CS
FPS1000 #N
SIG.
RTN
ON/
OFF
CS
FPS1000 #2
V TRIM
+S
-S
V TRIM
+S
-S
V TRIM
V TRIM
+S
-S
R
1
R
2
7
10
7
10
7
10
15
15
15
Derate the total output current by 10% when using
parallel operation to prevent overload condition.
The built-in Oring diodes on the main output and
the 12V Auxiliary output allow N+1 operation.
For input voltages less than 100Vac, maximum
output Power derated by 10% of the Power rating.
Up to 8 FPS1000 units of the same output voltage
rating can be connected in parallel. By connecting
the CS signal between the paralleled units,
automatic current balance is achieved,
with +/-10% accuracy.
-V
+V
FPS1000-48
FPS1000-24
FPS1000-32
FPS1000-12
0.0324
1.1298
9.9342
