MSR121RT ALLEN-BRADLEY [Allen-Bradley], MSR121RT Datasheet
MSR121RT
Manufacturer Part Number
MSR121RT
Description
Monitoring Safety Relays
Manufacturer
ALLEN-BRADLEY [Allen-Bradley]
Datasheet
1.MSR121RT.pdf
(2 pages)
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
4-30
200
180
160
140
120
100
80
60
40
20
0
0
Ambient Temperature (°C)
10
Current over 3 contacts
Current over 2 contacts
20
30
40
50
60
Specifications
Standards
Category
Approvals
Power Supply
Power Consumption
Safety Inputs
Input Simultaneity
Max. Allowable Input Resistance
Reset
Outputs
Output Utilization per
IEC 60947-4-1 (Resistive)
IEC 60947-5-1 (Inductive)
Output, Solid State
Thermal Current (non switching) See limit curve
Electrical Life (w/Surge Supp.)
250V AC/1.5A/375VA cos =0.35
Fuses, output external
Min. Switched Current/Voltage
Contact Material
Power On Delay
Response Time 24V DC
Recovery Time
Indication LEDs
Impulse Withstand Voltage
Operating Temperature
Humidity
Enclosure Protection
Terminal Protection
Electronic Short Circuit Prot.
Pollution Degree
Conductor Size
Mounting
Weight 24V DC
Mechanical Life
Vibration
Shock
See Output Ratings on page 1-29 for details. Consult factory for ratings not
24/115/230V AC
110 and 230V AC
250V AC/5A/1250VA cos =0.6
shown.
Output Utilization per
250V AC/2.5A/625VA cos =1
250V AC/6A/1500VA cos =1
10V DC/0.01A/0.1W
24V DC/2A/48W
EN 954-1, ISO 13849-1, IEC/
EN60204-1, IEC 60947-4-1, IEC
60947-5-1, ANSI B11.19, AS4024.1
Cat. 4 per EN954-1 (ISO 13849-1)
C-Tick, CE marked for all
applicable directives, cULus & BG
24V AC/DC, 115/230V AC
0.8–1.1 x rated voltage, 50/60Hz
4W
1 N.C., 2 N.C., Light Curtain or
Safety Mat
Infinite
45 ohms
Auto./Man. or Monitored Man.
3 N.O. Safety, 1 N.C. Aux, 1 S.S.
PNP Aux.
AC-1: 8A/250V AC
DC -1L 8A/24V DC
A300 AC-15; 6A/250V AC, 6A/
N300 DC-13; 3A/24V DC; 6A/24V
DC @ 6 ops/min
20mA @ 24V DC
Max 10A in one current path
100,000 operations
500,000 operations
300,000 operations
100,000 operations
1,000,000 operations
2,000,000 operations
6A slow blow or 10A quick blow
10mA/10V
AgSnO
1s
15ms
20ms
100ms
Green = Power on; Green = K1
Closed; Green = K2 Closed
2500V
-5°C to +55°C (+23° to +131°F)
90% RH
IP40 (NEMA 1), DIN 0470
IP20, DIN 0470
Inputs & solid state output
2
0.2 - 4mm
35mm DIN rail
290g (0.64lbs)
370g (0.82lbs)
2,000,000 operations
10-55Hz, 0.35mm
10g, 16ms, 100 shocks
125V AC
2
+ 0.5µAu
2
(24 - 12AWG)
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MSR121RT Summary of contents
Page 1
... 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 • ...
Page 2
... Monitored Manual Reset, Monitored Output +24V Closed A1 S11 S12 S52 K1 MSR121RT S21 S22 M Ground Automatic Reset, No Output Monitoring Safety Relays Monitoring Safety Relays Minotaur MSR121RT Power Supply Catalogue Number 440R-J23102 24V AC/DC 115V AC 440R-J23100 230V AC 440R-J23099 S11 S52 S12 Y31 Y32 ...