ABB FSO-21, Руководство пользователя

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322 Configuration

How to configure a cascaded system
This example shows how to configure the cascaded system (Cascade A) as shown in
section
Cascade on page 62 . The SSE function is used as an example ( Safety
function 1 in the figure on page 62 ). In this configuration example, Cascade B is not
configured (parameter SAFEIO.13 Cascade B = None ).
1. Define one of the FSO modules as the master and the other FSO modules are
followers in Cascade A:
•
In the master FSO: SAFEIO.11 M/F mode for cascade =
A = master, B = master (only Cascade A is configured in this example) .
• In the follower FSOs: SAFEIO.11 M/F mode for cascade =
A = follower, B = follower (only Cascade A is configured in this example) .
2. Connect a digital input to the corresponding digital output in the cascaded system
(single cascade X113:2 -> X113:8):
•
SAFEIO.12 Cascade A = X113:2 -> X113:8.
3. Set the digital inputs and outputs of the SSE function as defined for the cascaded
system:
•
The SSE function is activated from a redundant digital input in the master FSO
(
SSE.11 SSE input A = DI X113:1&X114:1 )
• The SSE function is cascaded back to the master FSO with a single digital
input and output
(
SSE.12 SSE input B = DI X113:2, SSE.21 SSE output = DO X113:8 )
• The SSE function is cascaded with a single digital input and output in the
follower FSOs (
SSE.12 SSE input B = DI X113:2 , SSE.21 SSE output =
DO X113:8 ).
Note : Do not use the completed output of the safety function as the cascaded
output (parameter ( SSE.22 SSE completed output = None , or you can use this
output for the safety function indication).
4. Set the acknowledgement method in the master FSO modules (in this example,
Manual is used):
• STO.02 STO acknowledgement = Manual
5. Set the digital input for the acknowledgement button in the master FSO module:
• FSOGEN.42 Acknowledgement button input = DI X114:2.
6. Set the acknowledgement method in the follower FSO modules (must be
Automatic in the follower FSOs).
• STO.02 STO acknowledgement = Automatic
7. Set the other parameters related to the SSE function as defined in section
Configuring SSE on page 351 .