ABB S800 I/O - DO890 Module Details

*HQHUDO,QIRUPDWLRQDQG,QVWDOODWLRQ8VHU¶V*XLGH
6HFWLRQ% 3RZHU8SRQ6,2
3BSE 020 923R101 127
$SSHQGL[% 5HIHUHQFHV
% 3RZHU 8SRQ6,2
S800 I/O will start under four different conditions.
1. Without configuration and without communication with the controller. Start the
first time or after a long power off.
2. Without configuration but with communication with the controller. Start the
first time or after a long power off.
3. With configuration but without communication with the controller. Start after a
short power off.
4. With configuration and with communication with the controller. Start after a
short power off.
Below follows a description how to start and how S800 behaves during start-up
under different conditions.
1. Check that the circuit breakers on the power switch units are switched off.
2. Switch on the mains power, and check for correct mains voltage with a
multimeter.
3. Switch on the circuit breaker on the power switch unit(s).
Without configuration and without communications with the controller:
See timing diagram Figure 2-1.
,QGLFDWLRQVRQ)&,
F (fault) “on” at power up and “off” after self-test ok
R (run) “off”
P (pow ok) “on” if power supply ok
T1 “off”
T2 “off”
PR “on” (only primary FCI in a redundant configuration)
DU “off” (both FCI in a redundant configuration).