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Installation Instructions

Original Instructions

Minotaur MSR138DP, MSR138.1DP Monitoring Safety Relay

Catalog Numbers 440R, MSR138DP, MSR138.1DP

Summary of Changes

This publication contains the following new or updated information. This list 
includes substantive updates only and is not intended to reflect all changes. 

Introduction

This device is intended to be part of the safety-related control system of a 
machine.

Rockwell Automation does not accept responsibility for failure of this device if you 
do not impalement the procedures that are given in this publication, or if you use 
the unit outside the recommended specifications that are listed in this publication.

Description

A valid reset operation concurrently activates instantaneous and delayed safety 
outputs. The status indicators of instantaneous outputs CH1 and CH2 and delayed 
outputs CHT1 and CHT2 are lighted. At the demand of the safety function and if any 
fault occurs, the instantaneous safety outputs de-energize within the specified 
response time. The delayed safety outputs open once the delay time has lapsed. If 
the time-reset circuit opens during delay timing stops, the time lapse and the 
delayed contacts open instantaneously.

Specifications

Topic

Page

Updated Response time

1

Updated Declaration of Conformity

4

IMPORTANT

Before installation, perform a risk assessment to determine 
whether the specifications of this device are suitable for all 
foreseeable operational and environmental characteristics 
of the machine to which it is to be fitted. At regular 
intervals during the life of the machine, check whether the 
characteristics foreseen remain valid.

WARNING: 

Danger of serious injuries. Misuse can result in 

malfunction.
• Only authorized and trained personnel can start up, assemble, 

or retrofit the device.

• Installation must be in accordance with the following steps.

WARNING: 

Danger of serious injuries. 

Incorrect installation or manipulation can result in serious 
injuries. Do not defeat, tamper, remove, or bypass this unit.

ATTENTION: 

If any malfunction or damage is present, do not 

attempt to repair. Replaced the unit before machine operation 
is allowed. Do not dismantle the unit.

IMPORTANT

The safety inputs of these products are described as 
normally closed (N.C.), that is, with the guard closed, the 
actuator in place (where relevant), and the machine able to 
start. You must prevent exposure to shock and/or vibration 
in excess of those specifications in IEC 60068 part: 2-6/7. 
Adherence to the recommended inspection and 
maintenance instructions forms part of the warranty.

IMPORTANT

All information complies with the state of this publication 
and is subject to change without notice.

Table 1 - Technical Specifications 

Attribute

Value

Functional safety data

According to ISO 13849-1:
• PLd,  Cat.  3
• MTTF

d

 [a]: 372

• DC average: 60%

Delayed - 
• PLe,  Cat.  4
• MTTF

d

 [a]: 295

• DC average: 90%

According to IEC 62061 and IEC 61508:
• SIL CL 2 
• PFH [1/h]: 238E-09
• HFT:  1
• DC:  60%

Delayed - 
• SIL CL 3 
• PFH [1/h]: 238E-09
• HFT:  1
• DC:  90%

• TM  (PTI)  [a]:  20
• dop [d]/hop [h] 

(1)

: 365/24

• tcycle [h]/[s] 

(2)

: 8/28,800

Power supply

24V AC/DC, 115V AC, 230V AC
0.85...1.1 x rated voltage 50/60 Hz

Power consumption

4 W

Safety inputs

1 N.C., 2 N.C., light curtain

Input simultaneity

Infinite

Allowable input resistance, 
max

135 Ω

Reset

Manual monitored or automatic/manual

Outputs

MSR138DP: 2 N.O. safety instant, 3 N.O. safety delayed
MSR138.1DP: 2 N.O. safety delayed, 1 N.C aux. delayed, 2 N.O. safety instant.

Output rating

• UL:  B300
• 5 A/250 V AC, 24V DC
• AC-15:  6  A/250  V  AC
• DC-13:  3  A/24  V  DC

Output rating (solid-state)

• 30V  DC
• 20 mA short circuit protected

Fuses output (external)

6 A slow blow or 10 A quick blow

Switched current/voltage, 
min

10 mA/10V

Contact material

AgSnO

2

 + 0.5µAu

Electrical life (operations)

• 100,000 (220V AC/4 A/880VA cos

φ

 = 0.35)

• 500,000 (220V AC/1.7 A/375VA cos

φ

 = 0.6)

• 1,000,000 (30V DC/2 A/60 W)
• 2,000,000 (10V DC/0.01 A/0.1 W)

Mechanical life

10,000,000 cycles

Power on delay

1 s

Response time

18 ms

Recovery time

100 ms

Time delays

Off delay (for delayed output contacts only)

Impulse withstand voltage

2500V

Pollution degree

2

Summary of Contents for Allen-Bradley Minotaur MSR138DP

Page 1: ...r manipulation can result in serious injuries Do not defeat tamper remove or bypass this unit ATTENTION If any malfunction or damage is present do not attempt to repair Replaced the unit before machine operation is allowed Do not dismantle the unit IMPORTANT The safety inputs of these products are described as normally closed N C that is with the guard closed the actuator in place where relevant a...

Page 2: ...lose If the safety inputs and reset circuit concurrently close during power up the safety relay activates immediately R Manual monitored reset b In Manual Monitored Reset mode a signal change of the reset circuit S33 S34 is required and monitored A reset fault occurs if the safety inputs remain open while the reset circuit is closed Positive edge The safety relay is active once the safety inputs c...

Page 3: ...21 S22 Safety input N C X1 X2 X3 X4 S33 S34 Link for auto reset Y1 Y2 Monitoring loop feedback Y39 Y40 Timer override 13 14 Safety output 1 N O 23 24 Safety output 2 N O 37 38 Timer output 1 N O 47 48 Timer output 2 N O 57 58 1 1 MSR 138DP Timer output 3 N O 55 56 2 2 MSR 138 1DP Timer output 3 N C PWR Status indicator illuminates green when the unit is powered flashing green if cross loop faults ...

Page 4: ... MSR138 1DP safety relay in safety circuits according to DIN EN 60204 1 VDE 0113 part 1 Safety requirements that are specified in Specifications on page 1 are maximum based on the operation mode and wiring Specifications are applicable only if the safety function is demanded at least once within 6 months All diagnostic tests are conducted at least before next demand The mission time TM for the pro...

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