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MSR138DP Datasheet(PDF) 1 Page - Allen-Bradley

Part No. MSR138DP
Description  Monitoring Safety Relays with Delayed Outputs
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Maker  ALLEN-BRADLEY [Allen-Bradley]
Homepage  http://www.ab.com

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Safety Relays
Monitoring Safety Relays with Delayed Outputs
Minotaur MSR138DP
The MSR138DP is a versatile monitoring safety relay. It can be
connected in four different input wiring configurations: 1 N.C., 2
N.C., or 2 PNP connections from a light curtain. When connected in
the 2 N.C. fashion, the MSR138DP checks for cross faults across the
two inputs. When connected to light curtains, the light curtain must
perform the cross fault detection.
The MSR138DP has output monitoring that can accommodate
either automatic/manual reset or a monitored manual rest. When
configured with automatic/manual reset (jumpers on X1-X2 and
X3-X4), the MSR138DP can have the reset terminals S33-S34
jumpered or can be converted to an unmonitored manual reset by
adding a normally open switch in the monitoring loop (S33-S34).
When configured to monitored manual reset, the MSR138DP
checks the output monitoring circuit through the manual application
of the reset switch.
The outputs of the MSR138DP include 2 normally open immediate
safety outputs and 3 normally open delayed safety outputs. The
outputs of the MSR138.1DP include 2 normally open immediate
safety rated outputs, 2 normally open delayed safety outputs and 1
normally closed delayed safety output. The safety outputs have
independent and redundant internal contacts to help ensure the
safety function.
A N.C. timer reset switch can be added to force the delayed contacts
opened prior to the completion of the timing cycle. An electronic
protection circuit detects shorts across the input, when the
MSR138DP wired for cross fault detection.
• Category 4/3 per EN 954-1
• Stop category 0 and 1
• Light curtain, E-Stop, Safety Gate inputs
•2 immediate safety outputs
• Delayed outputs: 3 safety or 2 safety and 1 aux.
• Cross fault monitoring
• Monitored or automatic reset
• Removable terminals
➊ See Output Ratings on page 1-29 for details. Consult factory for ratings not
EN 954-1, ISO 13849-1, IEC/EN
60204-1, IEC 60947-4-1, IEC
60947-5-1, ANSI B11.19, AS4024.1
Category Instantaneous/Delayed
Cat. 4/Cat. 3 per EN 954-1
C-Tick, CE marked for all
applicable directives and cULus
Power Supply
24V AC/DC, 115V AC or 230V AC
0.8 to 1.1 x rated voltage, 50/60Hz
Power Consumption
Safety Inputs
1 N.C., 2 N.C. or light curtain
Input Simultaneity
Max. Allowable Input Resistance
135 ohms
Monitored Manual or Auto./Manual
2 N.O. Safety; 3 N.O. Safety
Delayed (MSR138DP); 2 N.O.
Safety Delayed (MSR138.1DP); 1
N.C. Aux. Delayed (MSR138.1DP)
Output Utilization per IEC
60947-4-1 (Resistive)
AC-1: 7A/250V AC
DC-1: 7A/24V DC
➊ Output Utilization per IEC
60947-5-1 (Inductive)
B300, AC-15
6A/250V AC, 6A/125V AC
P300, DC-13; 3A/24V DC
6A/24V DC @ 6 ops/min
Thermal Current (non switching)
Units with 24V AC/DC supply:
Units with 115/230V AC supply:
Max 7A in one current path
5x3.5A or 3x4.5A
5x2.5A or 3x3.5A
Fuses Output (external)
6A Slow Blow or 10A Quick Blow
Min. Switched Current/Voltage
Contact Material
AgSnO2 + 0.5mAu
Power On Delay
Response Time
Recovery Time
Indication LEDs
Green= Power
Green= CH1 Output Active
Green= CH2 Output Active
Green=CHT1 Timed Output Act.
Green=CHT2 Timed Output Act.
Impulse Withstand Voltage
Pollution Degree
Operating Temperature
-5°C to +55°C (+23°F to 131°F)
Enclosure Protection
IP40 (NEMA 1)
Terminal Protection
Conductor Size
0.2–4mm2 (24–12 AWG)
Torque Settings—term. screws
0.4–0.5 Nm (3.54–4.43lb²in)
Case Material
Polyamide PA 6.6
35mm DIN rail
Weight 24V DC
110V AC or 230V AC
350g (0.77lbs)
490g (1.08 lbs)
Electrical Life (w/Surge Supp.)
250V AC/6A/1500VA cos
250V AC/2.5A/625VA cos
250V AC/1.5A/375VA cos
250V AC/5A/1250VA cos
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
Mechanical Life
2,000,000 cycles
10-55Hz, 0.35mm
10g, 16ms, 100 shocks

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