4-50 safety relays two hand relays minotaur MSR7R & msr7c description the allen-bradley guardmaster minotaur MSR7R & msr7c are logic units for monitoring and interfacing two hand control devices with a safety related circuit. the MSR7R is for use with mechanical switches and the allen-bradley bulletin 800z zero force touch buttons. the msr7c is for use with electronic-sensing (for example, capacitive or photoelectric) palm buttons because the msr7c will not turn its output on if a power interruption occurs while a person?s hands are on the buttons. the msr7 has 3 n.o. safety outputs and 1 n.c. auxiliary output. the safety outputs have independent and redundant internal contacts to help ensure the safety function. the auxiliary contact is a nonsafety output intended to provide an external signal about the status of the safety outputs. the msr7 requires the two switches to be operated within 0.5 seconds of each other and will only authorize the on state while both switches are held down. if one of the switches is released, the output goes to the off state and the machine cannot be restarted until both buttons are released and then operated simultaneously. the msr7 conforms to en574 which gives specific requirements for two hand control units and logic devices. categories iiib or iiic are achieved depending upon the wiring. features ? safety category 3 per en 954-1 ? safety category iiib per en 574 ? two-hand control unit ? 3 n.o. safety outputs ? 1 n.c. auxiliary output ? 45mm wide housing applications contactor monitoring circuit shown with mechanical two hand push button station or two capacitive switches MSR7R/msr7c contactor switching circuit supply inclusive of switching circuit contactor monitored by minotaur switch circuit : MSR7R monitors for single fault that may cause a danger. contactors : provides contactor monitoring if two or more contactors are used in series. th e sa f ety f unction is ensure d b y t h e m inotaur. MSR7R monitors itself for any fault. specifications ? see output ratings on page 1-29 for details. consult factory for ratings not shown. standards en574, en954-1, iso13849-1, iec/en60204-1, iec60947-5-1, ansi b11.19, as4024.1 category cat. 3 per en 954-1 (iso 13849-1) cat. iiib per en 574 approvals c-tick, ce marked for all applicable directives, culus & tv power supply 24v ac/dc, 110v ac or 230v ac power consumption <4va safety inputs 1 n.c & 1 n.o. input simultaneity 0.5s maximum input resistance 500 w reset automatic outputs 3 n.o. safety; 1 n.c. auxiliary ? output utilization per iec 60947-5-1 (inductive) b300, ac-15 4a/250v ac, 4a/125v ac p300, dc-13; 2a/24v dc thermal current (non switching) 4a fuses input (internal, replace.) output (external) 500ma time lag 5a quick acting min. switched current/voltage 10ma/10v maximum dropout time 50ms indication leds red = power on green = k1closed green = k2 closed impulse withstand voltage 2500v installation group c in accordance with vde 0110 pollution degree 3 operating temperature -10c to +55c (+14f to +131f) humidity 90% rh enclosure protection ip40, (nema 1), din 0470 terminal protection ip20, din 0470 conductor size 1 x 2.5mm 2 (14awg) stranded, 1 x 4mm 2 (12awg) solid torque settings?terminal screws 1n ? m (8.85lb ? in) case material red polycarbonate mounting 35mm din rail weight 510g (1.12lbs) electrical life 220v ac/4a/880va cos ? =0.35 220v ac/1.7a/375va cos ? =0.6 30v dc/2a/60w 10v dc/0.01a/0.1w 100,000 operations 500,000 operations 1,000,000 operations 2,000,000 operations mechanical life 2,000,000 operations vibration 0.75mm (0.30in) peak, 10-55hz shock 30g, 11ms half sine
safety relays 4-51 two hand relays minotaur MSR7R & msr7c product selection accessories dimensionsmm (inches) block diagram typical wiring diagrams application details minotaur inputs safety outputs auxiliary outputs input buttons power supply catalogue number MSR7R 1 n.c. & 1 n.o. 3 n.o. 1 n.c. mechanical or bulletin 800z 24v ac/dc 440r-d23021 110v ac 440r-d23022 230v ac 440r-d23023 msr7c capacitive or photoelectric 24v ac/dc 440r-d23024 110v ac 440r-d23025 230v ac 440r-d23026 description page number catalogue number 500ma fuse 14-6 440r-a31562 a2 x2 x1 s13 s24 s14 s23 a1 14 24 13 33 23 41 34 42 k1 k2 ~ k5 k1 k4 k4 k1 k4 k5 k1 k2 k3 k2 k3 k3 k5 k2 k5a 24vdc a2 x2 x1 s13 s23 s14 s24 a1 14 24 13 33 23 41 34 42 k1 k2 ~ k4 k4 k4 k2 k3 k1 k1 k5 k1 k3 k1 k2 k3 k2 k2 k5 timer q1 24vdc 35mm din rail mounting 73 (2.87) 120 (4.72) 45.5 (1.79) s23 x1 s24 s14 s13 x2 a2 a1 l1 n 14 24 13 33 23 41 l1 k1 l2 k2 l3 34 42 k1 k2 m s23 x1 s24 s14 s13 x2 a2 a1 l1 n 14 24 13 33 23 41 l1 k1 l2 k2 l3 34 42 k1 k2 m dual channel two-hand control, automatic reset, dual channel output, monitored output dual channel two-hand control, automatic reset, dual channel output, no monitored output switch 2 e-stop reset MSR7R switch 1 switch 2 msr7c switch 1 replacement fuse
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