PSD1220 & PSD1220-098
-
SIL 3 Power Supply, 24Vdc, 20 A, Zone 2, DIN Rail Mounting
G.M. International ISM0370-3
9
Installation Procedure - 2nd step (only for single PSD1220 or PSD1220-098 unit): Wiring of AC input, DC output, Fault contact output and
start up of power supply unit
RIGHT
LEFT
UP
BOTTOM
PSD1220
Vout adjust trimmer
PWR On LED
RIGHT
LEFT
UP
BOTTOM
PSD1220-098
Vout adjust trimmer
PWR On LED
Front view
AC Input
DC Output
Fault contact
+ + – –
N L
Bottom side view
Bottom side view
AC Input
DC Output
Fault contact
+ + – –
N L
The following images shows the wiring of AC input, DC output, Fault contact output terminal blocks for a single PSD1220 or PSD1220-098, not used in parallel/redundant configuration.
The unit must receive AC mains by means of a magnetic circuit breaker or switch with the following features:
B or C characteristic 8
÷
10 Amps when nominal low input voltage 110
÷
120 Vac
±
10% is used;
B or C characteristic 4
÷
6 Amps when nominal high input voltage 220
÷
240 Vac
±
10% is used.
AC line internal fuses are not user replaceable. The unit cannot be repaired by the end user and must be returned to the manufacturer or his authorized representative.
PSD1220-098 has got plug-in screw connection terminal blocks (which are extractable):
- for AC input terminal block, cable stripping length is 7 mm and
use a typical cable section of AWG15 (maximum AWG11 or 4 mm
2
);
- for DC output terminal block, cable stripping length is 7 mm and
use a typical cable section of AWG12 (maximum AWG11 or 4 mm
2
);
- for Fault contact output terminal block, cable stripping length is 7 mm and
use a typical cable section of AWG18 (maximum AWG14 or 2.5 mm
2
).
For each terminal block, tighten its screws with maximum 0.6 Nm torque.
PSD1220 has got plug-in spring connection terminal blocks (which are not extractable):
- for AC input terminal block, cable stripping length is 15 mm and
use a typical cable section of AWG15 (maximum AWG10 or 6 mm
2
);
- for DC output terminal block, cable stripping length is 15 mm and
use a typical cable section of AWG11 (maximum AWG10 or 6 mm
2
);
- for Fault contact output terminal block, cable stripping length is 10 mm and
use a typical cable section of AWG18 (maximum AWG16 or 1.5 mm
2
).
In addition, could be useful the following tools to press spring during cable connection:
- for AC input and DC output terminal blocks, use 3.5 x 0.6 mm flat-blade screwdriver;
- for Fault contact output terminal block, use 2.5 x 0.4 mm flat-blade screwdriver.
RIGHT
LEFT
UP
PSD1220 or PSD1220-098
Vout adjust trimmer
PWR On LED
Front view
Trimmer for output voltage adjusting
(use a little cross head isolated screwdriver)
Power ON
green LED
Start up
:
power the AC line
to turn on PSD1220 or PSD1220-098 unit: Power ON green LED, on front panel, is ON and 24 Vdc (factory setting)
output voltage is present on DC output terminal block.
See page 4 for more information about Power ON green LED signalling.
The output voltage can be measured on DC output terminal block by means of a voltmeter, positioning its leads with touch prods on
terminal block screws (for PSD1220-098) or on terminal block springs (for PSD1220).
If it is required to set an output voltage value different from factory setting (24 Vdc), use the trimmer for output voltage adjusting.
Turn the trimmer clockwise (to the right) to increase output voltage (max. 26.1 Vdc) or turn the trimmer counterclockwise (to the left) to
decrease output voltage (min. 23.6 Vdc).
