ABB XIO-08 - Power-On Sequence; Power with External Power Source

XIO USER MANUAL | 2106424MNAA | 33
NOTICE
– Equipment damage. The maximum input voltage for legacy TFIO modules is 12 Vdc
(see
Additional information for a list of legacy TFIOs).
IMPORTANT NOTE:
Externally fuse the power input for the load. This consists of the equipment
plus any external devices powered by the
XIO. The wire gauge should be appropriate (in some
applications a minimum of 16 AWG gauge is
advisable).
3.5.1 Power-on sequence
The XIO power-on sequence initiates when power is connected. The SYS STATUS LEDs display the
following information as the controller completes its startup:
Figure 3-6: LED power on sequence
IMPORTANT NOTE:
The XIO design has a super capacitor (Super CAP) that is a short-term power
reservoir (see section
2.2.7 Super capacitor for more details). The first time the unit powers on, or
if the
XIO is left powered off for several hours or longer, the boot time is approximately two
minutes
to allow charging of the super capacitor.
The boot time is considerably less o
nce the capacitor is fully
charged.
3.5.2 Power with external power source
The unit receives power from an external power supply (12 to 24 Vdc). Remove the power terminal
connector to wire the power cable before connecting the power supply to the board.
DANGER – Serious damage to health / risk to life. Explosion Hazard: A customer
provided/installed 5 A fuse in the power source line is required. Components on the boards that
overheat due to higher fuse rating could ignite in the presence of explosive gas.
WARNING
– Bodily injury. To prevent injury, only permit a licensed electrician to install Vac
wiring
.