SIGMATEK SR 012, Technical Manual

Page: 30 / 48

SR 012 S-DIAS DC MOTOR OUTPUT STAGE
Page 28 04.11.2020
7.2 Function
The safety functions in the DC motor output stage are controlled over two digital inputs.
The following table shows the status that the safe inputs ENABLE 1 and ENABLE 2 must
assume to enable normal operation or trigger the safety function.
Input Status Description
ENABLE 1 ENABLE 2
Open Open
Safe status of
the drive system
Open Low
Low Open
Low Low
High High Drive system ready
If the ENABLE 1 and ENABLE 2 are changed from any status to the "Drive Ready" status,
the DC
motor output stage is not enabled immediately. In order to set the system to “Drive
system ready” status, a change from “Low - Low” to “High - High” must occur.