Safety Relays Monitoring Safety Relays Minotaur MSR121RT Specifications Standards EN 954-1, ISO 13849-1, IEC/ EN60204-1, IEC 60947-4-1, IEC 60947-5-1, ANSI B11.19, AS4024.1 Category Cat. 4 per EN954-1 (ISO 13849-1) Approvals C-Tick, CE marked for all applicable directives, cULus & BG Power Supply 24V AC/DC, 115/230V AC 0.8–1.1 x rated voltage, 50/60Hz Power Consumption 4W Safety Inputs 1 N.C., 2 N.C., Light Curtain or Safety Mat Input Simultaneity Infinite Description Max. Allowable Input Resistance 45 ohms The Allen-Bradley Guardmaster Minotaur MSR121RT is a safety monitoring relay that provides three normally open safety contacts, a normally open auxiliary contact and a solid state auxiliary output for use with interfacing to PLCs. Reset Auto./Man. or Monitored Man. Outputs 3 N.O. Safety, 1 N.C. Aux, 1 S.S. PNP Aux. Output Utilization per IEC 60947-4-1 (Resistive) AC-1: 8A/250V AC DC -1L 8A/24V DC ➊ Output Utilization per IEC 60947-5-1 (Inductive) A300 AC-15; 6A/250V AC, 6A/ 125V AC N300 DC-13; 3A/24V DC; 6A/24V DC @ 6 ops/min Output, Solid State 20mA @ 24V DC Thermal Current (non switching) See limit curve Max 10A in one current path The MSR121RT has a versatile input arrangement. It can be connected to a single or dual channel safety gate or e-stop, a safety mat input or a light curtain that provides cross fault detection. Reset and output monitoring is determined by the wiring configuration. Automatic/manual reset can use a jumper or can be used to check operation of external contactors. Monitored manual requires the use of a manually operated normally open momentary switch. The MSR121RT has 3 normally open safety rated outputs. The safety outputs have independent and redundant internal contacts to help ensure the safety function. It has one normally closed auxiliary output as well as a solid state PNP auxiliary output to indicate the status of the MSR121RT to a indicator lamp or a PLC. Features • • • • • • • • • Category 4 per EN 954-1 Stop category 0 3 Safety contacts N.O. 1 Auxiliary contact N.C. 1 Solid state PNP auxiliary contact Single/dual channel operation Cross fault monitoring Monitored or automatic reset E-stop, safety gate, safety mat or light curtain applications current2 x number of contact paths, (A2) Contact Current Limit Curve 100,000 operations 500,000 operations 300,000 operations 100,000 operations 1,000,000 operations 2,000,000 operations Fuses, output external 6A slow blow or 10A quick blow Min. Switched Current/Voltage 10mA/10V Contact Material AgSnO2 + 0.5µAu Power On Delay 1s Response Time 24V DC 24/115/230V AC 15ms 20ms Recovery Time 100ms Indication LEDs Green = Power on; Green = K1 Closed; Green = K2 Closed Impulse Withstand Voltage 2500V Operating Temperature -5°C to +55°C (+23° to +131°F) 200 Humidity 90% RH 180 Enclosure Protection IP40 (NEMA 1), DIN 0470 160 Terminal Protection IP20, DIN 0470 140 Electronic Short Circuit Prot. Inputs & solid state output 120 Pollution Degree 2 100 Conductor Size 0.2 - 4mm2 (24 - 12AWG) 80 Mounting 35mm DIN rail 60 Weight 24V DC 110 and 230V AC 290g (0.64lbs) 370g (0.82lbs) Mechanical Life 2,000,000 operations Current over 3 contacts 40 Current over 2 contacts 20 0 0 10 20 30 40 50 Ambient Temperature (°C) 4-30 Electrical Life (w/Surge Supp.) 250V AC/6A/1500VA cosϕ=1 250V AC/2.5A/625VA cosϕ=1 250V AC/1.5A/375VA cosϕ=0.35 250V AC/5A/1250VA cosϕ=0.6 24V DC/2A/48W 10V DC/0.01A/0.1W 60 Vibration 10-55Hz, 0.35mm Shock 10g, 16ms, 100 shocks ➊ See Output Ratings on page 1-29 for details. Consult factory for ratings not shown. Safety Relays Monitoring Safety Relays Minotaur MSR121RT Product Selection Inputs Safety Outputs Auxiliary Outputs 1 N.C., 2 N.C., Safety Mat or Light Curtain 3 N.O. 1 N.C. 1 S.S. PNP Power Supply Catalogue Number 24V AC/DC 440R-J23102 115V AC 440R-J23100 230V AC 440R-J23099 Dimensions—mm (inches) Block Diagram A1 (+) 87 (3.42) 109.5 (4.31) S11 S52 S12 Y31 Y32 33 41 13 23 33 41 14 24 34 42 K2 S21 (PE) 75 (2.95) 23 K1 MSR121RT 45 (1.77) 13 S22 X5 S33 S34 14 24 34 A2 (–) 42 4.5 (0.17) Typical Wiring Diagrams +24V DC L1 + 24VDC - Light curtain Out 1 Out 2 L1 L2 L3 L1 L2 L3 A1 S11 S12 S52 X5 Y31 13 23 33 41 A1 S11 S52 S12 X5 Y31 13 23 33 41 Safety Mat K1 K1 MSR121RT PE A2 S21 S22 S34 S33 Y32 14 24 Reset MSR121RT K2 PE A2 S21 S22 S34 S33 Y32 14 24 34 42 K2 34 42 M K1 K2 Ground Reset M K1 K2 N 24V DC Light Curtain, 115/230V AC Safety Relay, Monitored Manual Reset, Monitored Output Safety Mat Monitored Manual Reset, Monitored Output +24V DC E-Stop L1 L2 L3 A1 S11 S52 S12 X5 Y31 13 23 33 41 Safety Gate +24V DC L1 L2 L3 Closed A1 S11 S12 S52 X5 Y31 13 23 33 41 K1 K1 MSR121RT MSR121RT PE A2 S21 S22 S34 S33 Y32 14 24 Ground Reset K2 K2 PE A2 S21 S22 S34 S33 Y32 14 24 34 42 K1 K2 Dual Channel E-Stop, Monitored Manual Reset, Monitored Output M Ground 34 42 K1 K2 M Single Channel Safety Gate, Automatic Reset, No Output Monitoring 4-31