POWERBOX
Industrial Line
OFI1200A Series
1200W Single output
AC/DC Baseplate power supply
3
www.prbx.com
2022.07.21
Specifications are subject to change without notice.
Fig. 2.3 Derating curve of point A (baseplate temperature)
Remarks:
Operation in the hatched area may cause significant level of ripple and
ripple noise.
<Temperature measurement with cover option>
To measure a temperature of internal components in units with option
-N (with cover), it is necessary to remove the cover to apply
thermocouples on measuring points.
To remove the cover, remove cables from input terminal and remove 4
screws on each corner.
There are an isolation sheet and gap pads on the input filter. When the
cover is re-installed, make sure that the isolation sheet and gad pads
are properly located.
Fig. 2.4 Screws to be removed for temperature measurement
3. Wiring
3.1 Wiring input connector
(1) Built-in fuse
The two 16 ampere AC fuses are built-in on AC(L) in parallel.
(2) Wire
Connection capability of the input connector.
Input connector type
: MKDS 5/ 3-9,5 (1714984)
(Phoenix Contact)
Connector cross section solid
: 0.2 mm
2
–
6 mm
2
Connector cross section flexible
: 0.2 mm
2
–
4 mm
2
Conductor cross section (AWG)
: AWG 24
–
10
Conductor cross section (flexible, with ferrule)
: 0.25 mm
2
–
4 mm
2
Stripping length
: 8mm
Torque
: 0.5
–
0.6 Nm
An input current is dependent on input voltage and output current.
Choose the appropriate thickness for the input wire.
Influence against noise is improved if the input wires are twisted. In
addition, make sure that input and output wires are separated.
(3) FG terminal
The FG terminal on input connector shall be Functional Ground.
Make sure that the mounting hole for protective earthing on the
baseplate is properly connected, as required for class I equipment.
3.2 Wiring output terminal
The assembly torque for output terminal screws.
Screw size
: M6
Recommended screw torque : 3.8 Nm
At -40°C operation, an external output capacitor needs to be added to
ensure stable output voltage during start-up. Table 3.1 shows a
recommended an external output capacitor.
Table 3.1 Recommended external output capacitor
Models
Value
OFI1200A12
7,800 µF
OFI1200A28
3,000 µF
OFI1200A48
1,360 µF
0
50
100
-40
-20
0
20
40
60
80
100
Loa
d fact
or
[%
]
Baseplate
temperature [˚C]
(75)
(75)
OFI1200A28,OFI1200A48
Vin = 170
～
305VAC
OFI1200A28,OFI1200A48
Vin = 85
～
170VAC
(65)
(95)
OFI1200A12
(60)
Screw locations
