Manual 37941A DTSC-200A - ATS Controller - Operation
Page 22/37 © Woodward
• Fail to close S1 is present
• Fail to close S2 is present
• Shunt trip enable flag (20.12) is enabled
• The transfer switch is in S1 or S2 position AND
o Fail to open S1 is present OR
o Fail to open S2 is present