Safeguarding Applications Two-Hand Control Mechanical Buttons, MSR7R Bulletin 100S, Dual Channel 24V AC/DC, 110V AC, 230V AC L1 L2 L3 Switch 2 Momentary Push Button Switch 1 Momentary Push Button A1 S13 S24 41 13 23 33 X1 K1 Minotaur MSR7R K2 Contact Protection e.g. Thermal Cut Out A2 S14 S23 42 14 24 34 X2 Fuses M K1 K2 Bulletin 100S or 700S Circuit Status The 2 hand control buttons are not pressed and the motor is OFF. Operating Principle This is a dual channel system with monitoring of the contactors. It uses 2 double pole (N.C. & N.O.) positive mode momentary action push switches. The motor can only be started when both buttons are pushed synchronously (within 0.5 sec.). If either or both buttons are released, the outputs at the Minotaur are opened. 18-27