16
PSD1206
- PSD1210
- SIL 3 - SIL 2 Switching Power Supply 24 Vdc
G.M. International ISM0076-7
Procedure
Step
Connect the “overvoltage crowbar test jig” (TPF1210) to the PS under test and set TPF1210 with the following configuration:
SW1=OFF, SW2=OFF, SW3=OFF, SW4=OFF and potentiometer P1 completely rotated
clockwise
1
Turn on power supply under test and regulate the load current (A1) until obtaining 10 A (6A for PSD1206)
2
Connect voltmeter (V2) to “Out diodes” pins of “overvoltage crowbar test jig” and check that voltage drop is between 0.3V and 0.7V
3
Turn on the second PS
4
Turn off the PS under test
5
Check that voltage (V2) between the diodes is between -22 V and -26 V
6
Paralleling diode operation:
Connect the two power supplies as shown in the following image:
Turn off also the second PS and disconnect voltmeter V2 from the “Out diodes” pins of the “overvoltage crowbar test jig”
7
MODELS
PSD1210
PSD1206
MODELS
PSD1210
PSD1206
+
+
-
-
-
+
=
_
CS
Shar
ing
cur
ren
t
+
+
-
-
-
+
=
_
CS
Shar
ing
cur
ren
t
Current sharing connection
PR
D2
D1
S2
COM
S1
C2
C1
B2
B1
A2
A1
L/+ N/-
V1
+
V2
+
A1
+
A2
+
220 Vac
L/+ N/-
220 Vac
V2
+
4 3 2 1
ON
OFF
+
-
Vout
adjust
Diode test
TPF1210
D2
D1
S2
COM
S1
C2
C1
B2
B1
A2
A1
PS UNDER TEST
SECOND PS
