21
Installation and Maintenance Manual
E2K-401-0817 Rev. 1
August 2017
Wiring Diagram Symbols for MCP
Figure 29 Reversing Contractor
MECHAN ICAL
INTERLOCK
Showing Open and Close coils, Mechanical Interlock, and Electrical Interlock Contacts Oi & Ci.
Figure 30 Nuisance Trip
To prevent (TSO) contact tripping when valve has been jammed closed – LSC contact allows
valve to open slightly. Contact then open, ensuring torque protection for remaining travel.
Figure 31 Non-Fused Disconnect
Figure 32 Fused Disconnect
Figure 33 Circuit Breaker
P3
P2
P1
Section 7: Wiring Diargram Symbols for MCP
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