Application Note
SafeC S to MSR127 Conversion
IMPORTANT: A risk assessment must be completed to assure that all tasks and hazards are considered and confirm that the example circuit
will provide adequate risk reduction.
1) Purpose
a.
b.
The purpose of this document is to describe typical ways in which the MSR127 Minotaur Safety
Relay (MSR) can be applied in SafeC S applications. The SafeC S is 24VDC powered unit. Only
24VDC versions of the MSR127 will be included.
The MSR127 is a versatile monitoring safety relay. Its performance in a safety system depends on
what devices are connected to it.
2) References
a.
S116-CA001A-EN-P, Safety Products Catalog
3) Product Selection Chart*
Terminals
Power Supply
Reset
Type
Catalog Number
Removable
24V AC/DC
Automatic / Manual
MSR127TP
440R-23132
Monitored Manual
MSR127RP
440R-23135
* On the Safe C S Automatic and Monitored Manual Reset are switch selected. The
MSR127 comes in two versions. The MSR127RP provides Monitored Manual Reset.
The MSR127TP can be wired for either Automatic Reset or (Non-Monitored) Manual
Reset.
SafeC S to MSR127 conversion - with Reset Note
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Table of Contents
1)
2)
3)
4)
5)
6)
Purpose .............................................................................................................................................1
References.........................................................................................................................................1
Product Selection Chart ....................................................................................................................1
Table of Contents..............................................................................................................................2
Resets……………………………………………………………………………………………….2
Connection Diagrams………………………………………………………………………………4
a) Manual Reset – Light Curtain Input.................................................................................................4
b) Monitored Manual Reset – Light Curtain Input...............................................................................5
c) Automatic Reset - Light Curtain Input.............................................................................................6
d) Manual Reset - E-Stop Input............................................................................................................7
5)
Product Comparison…………………………………………………………………………….......8
b.
The MSR127 has either automatic/manual or monitored manual reset, depending on the model
selected, see Product Selection Chart.
The reset circuit is connected between terminals S12 and S34.
The MSR127 checks the reset circuit after its inputs are satisfied.
Once the output of the MSR127 is energized, the reset circuit is not used until the inputs are cycled
again.
Resets:
c.
d.
e.
2.
Automatic/Manual
a.
b.
The type MSR127TP (440R-N23132) is internally configured for automatic / manual reset.
This type of reset is sometimes a jumper. A switch or contact can also be added to this circuit,
Figure 1. Automatic / Manual Reset Alternatives
SafeC S to MSR127 conversion - with Reset Note
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3.
Monitored Manual
a.
b.
c.
The type MSR127RP (N440R-23135) is internally configured for monitored manual reset.
The monitored manual reset requires the reset circuit to be open when the inputs are closed.
The reset contact is typically operated by hand, but can be operated by a PLC.
Figure 1. Monitored Manual Reset
4. Output Monitoring is used by the MSR127 to determine the status of certain devices.
d.
e.
f.
g.
The monitoring is accomplished by adding normally closed contacts, in series, in the reset circuit:
terminals S12 to S34. The monitored contacts must not be connected in parallel.
These devices must be in the closed state, prior to the MSR127 energizing its outputs.
Typical devices are contactors, control relays, expansion relays, and solenoid locking contacts.
The number of devices that can be monitored is limited by the resistance tolerated by the MSR127.
This resistance is 110 ohms.
Figure 2. Monitoring of Contactors
SafeC S to MSR127 conversion - with Reset Note
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Connection Diagrams
a)
Automatic Reset – Light Curtain Input
Figure 4. SafeC S Automatic Reset *
* switch selectable
Figure 5. Light Curtain, Automatic Reset, No Output Monitoring
SafeC S to MSR127 conversion - with Reset Note
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Connection Diagrams
b) Manual Reset – Light Curtain Input
Figure 6. SafeC S Manual Reset *
* switch selectable
Figure 7. Light Curtain, Manual Reset, No Output Monitoring
SafeC S to MSR127 conversion - with Reset Note
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Connection Diagrams
c)
Monitored Manual Reset – Light Curtain Input – External Contact Monitoring
Figure 8. SafeC S Manual Reset *Monitored Output
* switch selectable
Figure 9. Light Curtain, Monitored Manual Reset, Monitored Output
SafeC S to MSR127 conversion - with Reset Note
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Connection Diagrams
d) Manual Reset – E-Stop Input
Figure 10. SafeC S –Manual Reset*
* switch selectable
Figure 11. Dual Channel E-Stop, Manual Reset, No Output Monitoring
SafeC S to MSR127 conversion - with Reset Note
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Product Comparison
MSR127
SafeC S
Cat. 4 per EN 954-1(ISO 13849-1)
Cat. 4 per EN 954-1
SIL 3 per EN IEC 62061
-
Ple per ISO 13849-1
-
Specifications
Safety Classification
Functional safety Data
Certifications
PFHD: 1.45 X10
-9
-
MTTFd: 398 years
-
CE marked for applicable directives, cULus,
TŰV
c CSAus, CE, EN 954-1(Cat.4)
ISO 9001: 2000
Supply Voltage
24V AC/DC
24VDC
2W
2W
Inputs
1 N.C., 2 N.C., Light Curtain
1 N.C., 2 N.C., Light Curtain
Reset
Auto/Manual/Monitored Manual
Auto/Manual
15ms
18ms
(3) Power, CH 1, CH 2
(3) Power, CH 1, CH 2
Safety Contacts
3 N.O
2 N.O.
Auxiliary
1 N.C.
1 N.C.
Power Consumption
Response Time
Indicators
Outputs
Thermal Current /lth
Non-switching
24V AC/DC - 3 x 4A, 2 x 5A
115/230V AC - 3 x 3A, 2 x 4A, 1 x 5A
250V AC - 1 x 8A, 2 x 7A
10mA @ 10V
> 100mV @ > 1mA
Operations
Switching Cycles
Switching current@
minimum Voltage
Electrical Life to AC 15
with surge suppression
250V AC/2.5 A/625VA : 5 X 10
5
5
230V AC/2 A : 10 switching cycles
(EN 60947-5-1)
Mechanical Life
2,000,000 operations
10,000,000 switching cycles
IP40
IP40
IP20
IP20
-5 to 55 deg. C
-15 to 55 deg. C
22.5 X 99 x 114.5 mm
22.5 x 84 x 118 mm
35mm DIN rail
35mm DIN rail
Environmental Data
enclosure
terminals
Operating Temperature
Dimensions
mounting
Figure 12.
SafeC S to MSR127 conversion - with Reset Note
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