Parallel Opera Tion - TDK-Lambda FPS1000 Installationsanleitung

2. PARALLEL OPERA TION

2.1. Remote sensing and current balance
FPS1000 #1
SIG. ON/
CS RTN OFF
15 10
FPS1000 #2
SIG. ON/
CS RTN OFF
15 10
FPS1000 #N
SIG. ON/
CS RTN OFF
15 10
2.2. Output voltage trimming
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.
V TRIM
FPS1000 #1
SIG. ON/
CS RTN OFF
15 10 7
V TRIM
FPS1000 #2
SIG. ON/
CS RTN OFF
15 10 7
V TRIM
FPS1000 #N
SIG. ON/
CS RTN OFF
15 10 7
+V
+S
+S
-S
-S
-V
7
+V
+S
+S
-S
-S
-V
7
+V
+S
+S
-S
-S
-V
Fig 2-1
7
+S
-S
+S
-S
FPS1000-32
+S
-S
Fig 2-2
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 achi e ved,
with +/-10% accuracy .
+S
+V
LOAD
-V
-S
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.
FPS1000-12
0.0324
V TRIM
V TRIM
+S
+V
R
1
R
2
-S
-V
FPS1000-24
FPS1000-48
1.1298 9.9342