Shutdown Sequence Function - Omron S8AS User Manual

Shutdown Sequence Function

2-6

Shutdown Sequence Function

38
Power supply
voltage
Branch output 1
voltage
Branch output 2
voltage
Branch output 3
voltage
Branch output n voltage
(n: maximum branch
output number)
• The branch output's status indicator will flash green during the startup
sequence time until it is connected.
• The startup sequence's operation can be verified in Test Mode. For
details, refer to 5-3 Checking Sequence Operation.
• The startup sequence for models with unchangeable settings
(S8AS-24006N/48008N) cannot be changed.
Branch output
number
Setting time
Note The startup sequence functions in the following processes:
• Connecting when power is turned ON
• Reconnecting during a reset operation
• Simultaneous connection of all outputs in Test Mode
When the S8AS's input power supply is turned OFF, all of the branch outputs
are turned OFF (disconnected) simultaneously. On the other hand, when the
branch outputs are cut off by the external tripping input or communications, a
time delay can be applied between the branch output disconnections.
Note (1) The time delay can be set between 0.0 and 99.9 s. (If the delay is set to
0.0 s, the startup sequence will not operate and the branch output will be
cut off immediately.)
(2) The shutdown sequence is designed for the four branch outputs on one
S8AS. It does not provide time synchronization between outputs on more
than one S8AS.
Setting time
Setting time
Setting time
Setting time
Self-diagnostics (0.5 s min.)
1 2 3
0.0 s 0.4 s 0.8 s 1.2 s
Section 2-6
4 5 6 7
1.6 s 2.0 s 2.4 s
8
2.8 s