MSR6R_1

Safeguarding Applications Guard Locking Interlocks Atlas 5, Bulletin 800, CU2, MSR6R/T, Bulletin 100S, Dual Channel 24V AC/DC, 110V AC, 230V AC Start Momentary Push Button L1 L2 L3 Fuses K1 K2 Lock Release Momentary Push Button Guard Closed A1 5 Stop Momentary Push Button 7 1 2 3 Atlas 5 Minotaur MSR6R/T Set to D Channel Set to T Mode A1 S13 S23 41 13 23 33 X1 A1 N P N Y1 13 23 31 A2 Contact Protection e.g. Thermal Cut Out CU2 PNP Inductive Sensor CU2 6 8 4 A2 S14 S24 42 14 24 34 X2 A2 P N P Y2 14 24 32 NPN Fuses Bulletin 800 Latching E-Stop CU2 NPN Inductive Sensor M PNP K1 K2 Bulletin 100S or 700S Indication Bulb Shows Stopped Motion Circuit Status Circuit shown with guard door closed and locked (solenoid not energized), ready for motor starting (push start button) or lock release (push lock release button). Operating Principle In this system the guard is locked closed until the solenoid is energized. The solenoid can only be energized when: • The auxiliary contacts at K1(a) & K2(a) are closed (therefore power contacts at KI & K2 are open). • The CU2 senses stopped motion and closes its output circuit at terminals 13-14. • The lock release button is pressed. The monitoring contacts 3-9 isolate power to the contactor control circuits when the solenoid is in the unlocked mode. The guard operated contact sets at 4-10 and 21-22 are opened whenever the guard is not fully closed. The output contacts at 13-14 and 23-24 on the Minotaur will only be closed (allowing power to the control circuit) when both input circuits S13-S14 and S23-S24 are closed. Therefore the motor can only be started when the guard is in the closed and locked position. Fault Detection If either contactor K1or K2 sticks ON - The motor will stop on command but the guard cannot be opened (thus the fault is revealed to the operator). A single fault which causes solenoid energization circuit will initiate a STOP via contacts 3-9. A single fault within the CU2 will prevent the closing of its outputs (preventing solenoid energization). A single fault detected on the Minotaur input and output circuits will result in the lock-out of the system to a safe state (OFF) at the next operation of the respective input device. An open circuit fault across the solenoid energization circuit will prevent guard opening (other than by the emergency release points on the Atlas). Comments This system provides an interlock function of high integrity and will be suitable for many high risk applications. It is suitable for applications where motion overruns after the stop command and the time taken to run down to a stop is not predictable, consistent or more than approx. 30 minutes. 18-19