21.2.9
Static binary output module (SOM)
21.2.9.1
Introduction
The static binary output module has six fast static outputs and six change over output
relays for use in applications with high speed requirements.
21.2.9.2
Design
The Static output module (SOM) have 6 normally open (NO) static outputs and 6
electromechanical relay outputs with change over contacts.
The SOM consists mainly of:
•
An MCU
•
A CAN-driver
•
6 static relays outputs
•
6 electromechanical relay outputs
•
A DC/DC converter
•
Connectors interfacing
•
CAN-bus to backplane CBM
•
IO-connectors to binary outputs (2 pcs.)
The following parts are supervised:
•
Interruption in relay coil
•
Short circuit of relay coil
•
Driver failure
Z
IEC09000974-1-en.vsd
IEC09000974 V1 EN
Figure 532:
SOM Static output principle
1MRK502052-UEN B
Section 21
IED hardware
1169
Technical manual
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