ABB AC 800M

Power Supply Units – Types SD821, SD822 and SD823 Appendix A Hardware Units
184 3BSE 027 941 R301
Power Supply Units Types SD821/822/823 – Description
ABB recommends the use of these robust and reliable power supply units (PSUs)
for providing power to the AC 800M Controller when connected to an industrial
mains network of installation category III. All three PSUs can be used for both non-
redundant and redundant applications, as well as load sharing functions.
The three PSUs were designed as switch mode power converters, converting AC
mains supply voltage to a regulated 24V DC output. Rated output capacity:
• SD823 = 24 Volts DC regulated @ 10 A
• SD822 = 24 Volts DC regulated @ 5 A
• SD821 = 24 Volts DC regulated @ 2.5 A
The mains input voltage is set to either 115 or 230V by means of a switch mounted
on the face of the unit. The factory default position for this switch is 230V.
Figure 45. SD823 Connections for 10A Power Supply
103 mm (4.1 in)
44 mm
97 mm (3.8 in)
110 mm (4.3 in )
L+ L+ L– L–NL
120 mm (4.7
in)
PE
OK
SD823
115V
230V
125 mm
(4.9
in
)
(1.7
in
)