ABB Relion 670 series - Static binary output module (SOM); Introduction; Design

Function or quantity Trip and Signal relays
Making capacity at inductive load with L/R>10 ms
0.2 s
1.0 s
30 A
10 A
Breaking capacity for AC, cos j>0.4 250 V/8.0 A
Breaking capacity for DC with L/R < 40 ms 48 V/1 A
110 V/0.4 A
125 V/0.35 A
220 V/0.2 A
250 V/0.15 A
Maximum 72 outputs may be activated simultaneously with influencing
factors within nominal range. After 6 ms an additional 24 outputs may
be activated. The activation time for the 96 outputs must not exceed
200 ms. 48 outputs can be activated during 1 s. Continued activation is
possible with respect to current consumption but after 5 minutes the
temperature rise will adversely affect the hardware life. Maximum two
relays per BOM/IOM/SOM should be activated continuously due to
power dissipation.
19.2.11 Static binary output module (SOM)
19.2.11.1 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.
19.2.11.2 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.)
Section 19 1MRK505222-UUS C
IED hardware
1106
Technical reference manual