MSR121RT Datasheet, PDF (1/2 Pages) Allen-Bradley – Monitoring Safety Relays

Safety Relays
Monitoring Safety Relays
Minotaur MSR121RT
Description
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.
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
Contact Current Limit Curve
200
180
160
140
120
100
80
60
Current over 3 contacts
40
Current over 2 contacts
20
0
0 10 20 30 40 50 60
Ambient Temperature (°C)
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
Max. Allowable Input Resistance 45 ohms
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)
➊ Output Utilization per
IEC 60947-5-1 (Inductive)
AC-1: 8A/250V AC
DC -1L 8A/24V DC
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
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
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)
Humidity
90% RH
Enclosure Protection
IP40 (NEMA 1), DIN 0470
Terminal Protection
IP20, DIN 0470
Electronic Short Circuit Prot. Inputs & solid state output
Pollution Degree
2
Conductor Size
0.2 - 4mm² (24 - 12AWG)
Mounting
35mm DIN rail
Weight 24V DC
110 and 230V AC
290g (0.64lbs)
370g (0.82lbs)
Mechanical Life
2,000,000 operations
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.
4-30