MSR42
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Description
The MSR42 multi-function safety relay is the control module for the GuardShield Micro 400 safety light curtain, but can also be used with any light curtain. This versatile Category 4 safety device has a pair of PNP solid state, 400 mA OSSDs for direct connection to the final switching device. When safety relay outputs are required, the MSR42 easily accommodates the interconnection of up to three MSR45E safety relay expansion modules, each providing a pair of safety relay outputs. Simply connect ribbon cable connectors from the back of the MSR42 to each of the MSR45E modules for a series of interconnections for two PNP OSSDs, and six N.O. relay outputs.
The MSR42 has four software configurable inputs. These configurable safety inputs allow the connection of a multitude of safety devices such as safety light curtains, safety laser scanners, e-stops, safety switches, etc.
This 22.5 mm DIN mount multi-function safety module has both hard wired and software configurable operating modes. The removable spring terminal connectors on the MSR42 allow for ease of wiring of the device as well as hard-wired operating mode configuration.
Manual/automatic reset and start/restart can be configured by simply changing the wiring (see basic configuration examples).
Features such as two or four sensor muting, connecting up to two additional safety light curtains or other safety devices and configuring one or two auxiliary outputs are easily configured using the optical interface with the supplied software.
The MSR42 and Micro 400 light curtains support fixed blanking which is only available in the basic configuration mode and configured through a "teach-in" selector switch via the GPIO pins.
Features
- Category 4 per EN 954-1
- SIL CL3 IEC 61508, IEC 62061
- 22.5 mm housing
- Stop category 0, 1
- 24V DC supply voltage
- Manual, monitored or automatic reset
- Thirteen diagnostic LEDs
- Unique design allows for easy addition of relay expansion modules
- Removable terminal blocks
- One or two configurable auxiliary, standard outputs
- Connection of one or two additional safety devices
- RJ45 connections for Micro 400 safety light curtain
- Two or four sensor muting (Micro 400 only)
- Fixed blanking (Micro 400 only)
- Two sensor muting all GuardShield light curtains
- Supports up to three MSR45E expander units
- Free configuration software can be downloaded at www.ab.com/safety
Specifications
| Safety Ratings | |
| Standards | EN 954-1, IEC/EN 60204-1, IEC 61496-1 |
| Safety Classification | Cat. 4 per EN 954-1 (ISO 13849-1), SIL CL3 per EN IEC 61508, PLe per ISO 13849-1 |
| Functional Safety Data ¬ Note: For up-to-date information, visit http://www.ab.com/safety/ |
PFHD: < 9.00E-10 MTTFd: > 331 years For use in SIL3 systems (according to IEC 61508) depending on the architecture and application characteristics |
| Certifications | CE Marked for all applicable directives, cULus, and TÜV |
| Power Supply | |
| Input Power Entry | 24V DC |
| Power Consumption | 2.4 W (semi-conductor outputs unloaded) |
| Inputs | |
| Safety Inputs | 2 N.C. or 2 OSSD, Micro 400 software selectable |
| Input Resistance, Max. | — |
| Reset | Auto./manual or manual monitored |
| Power On Delay Time | Determined by configuration |
| Response Time | Determined by configuration |
| Outputs | |
| Safety Contacts | 2 PNP, 400 mA each |
| Auxiliary Contacts | 2 PNP, configurable |
| Environmental and Physical Characteristics | |
| Enclosure Type Rating/ Terminal Protection |
IP20/ IP20 |
| Operating Temperature [C (F)] | 0…55 ° (32…131 °) |
| Vibration | 0.35 mm 10…55 Hz |
| Mounting | 35 mm DIN Rail |
| Weight [g (lb)] | 130 (0.287) |
| Conductor Size, Max. | 1 x 2.5 mm2 (14 AWG) stranded |
| ¬ Usable for IEC 62061. Data is based on the following assumptions: - Mission time/Proof test interval of 20 years |
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LED Indicators (Basic Configuration) ¬ T
| LED | Green | Red |
| Lamp | — | — |
| GPI04 | Automatic start | Manual start (off) |
| GPI03 | Manual or automatic start | Manual start (off) |
| GPI02 | Configurable | Configurable |
| GPI01 | Configurable | Configurable |
| OSSD2 | Output active | Output inactive |
| OSSD1 | Output active | Output inactive |
| Info2 (LED) | Configurable | Configurable |
| Info1 (LED) | Configurable | Configurable |
| IN2 | Start release | No start release signal |
| IN1 | No test input | Test input |
| 0V | — | — |
| +24V | Power connected | No power connected |
| ¬ All I/O is configurable except OSSD1 and OSSD2. T LED behavior depends on configuration (see instruction sheet for details). |
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Product Selection
| Inputs | Safety Outputs | Auxiliary Outputs | Terminals | Reset Type | Power Supply | Cat. No. |
| GuardShield Micro 400 and 4 x GPI0 | 2 PNP | 2 PNP, configurable | Removable | Auto./manual or manual monitored | 24V DC | 440R-P226AGS-NNR |
Approximate Dimensions
Dimensions are shown in mm (in.). Dimensions are not intended to be used for installation purposes.
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Accessories
| Description | Cat. No. |
| MSR45E—Safety Relay for MSR41 or MSR42 (requires ribbon cable connection) | 440R-P4NANS |
| Ribbon cable—for one MSR45E | 440R-ACABL1 |
| Ribbon cable—for two MSR45Es | 440R-ACABL2 |
| Ribbon cable—for three MSR45Es | 440R-ACABL3 |
| Replacement terminal block kit—MSR42 | 440R-ATERM2P |
| Replacement terminal block kit—MSR45E | 440R-ATERM2C |
| USB optical interface software configuration tool used to configure the MSR42 | 445L-AF6150 |
| Replacement suction cup | 445L-AF6151 |
| Optical interface fastener | 445L-AF6152 |
Typical Wiring Diagrams
Basic Configurations (No Software)
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| Micro 400 Light Curtain, Manual Reset, No Output Monitoring | Micro 400 Light Curtain, Manual Reset, Start/Restart Monitored Output |
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| Fixed Blanking, Micro 400 Light Curtain, Manual Reset, No Output Monitoring |
Micro 400 Light Curtain, Automatic Reset, Start/Restart Monitored Output and MSR45E Expansion Module |
Software Configurations
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Note: Four Sensor T-type muting: GuardShield Micro 400, four muting PNP sensors, manual reset, output monitoring
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Note: Three-light curtain application: GuardShield Micro 400 light curtain, two GuardShield light curtains, manual reset, output monitoring
Application Details
MSR42—Shown connected to safety light curtains.
Multiple settings are available offering a variety of advantages.
Protective Mode
Example shows a press protected by a safety light curtain connected to the MSR42.
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In machine operation, whenever the light curtain beams are broken the press immediately stops to help avoid danger to the operator. Once the beams are cleared the machine can then be started.
Muting Modes
Four conveyor examples: All conveyor applications shown with a safety light curtain helping protect the dangerous area. In-line and cross beam muting is used to allow the material to pass through the light curtain without stopping the machine. Any other object or person will be detected by the light curtain which will initiate machine stop.
Four Sensor T-type
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Bi-directional muting: In-line muting requires the material to break the beams in a sequence, as shown. Only if all four muting sensor (MS) beams are broken in turn and then clear in turn will the light curtain allow material through without initiating machine stop.
Two Sensor T-type
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Bi-directional muting: Cross-beam muting requires the material to break the beams in a sequence. MS1 first and then MS2. Only if the beams are broken in turn and then clear in turn will the light curtain allow material through without initiating machine stop.
Two Sensor L-type
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Uni-directional muting: This will allow material to exit the machine but not allow material or personnel to enter the machine without a fault condition. Only if both MS beams are broken in-turn and then cleared in-turn, will the light curtain allow material through without initiating a machine stop.
Two Sensor T-type with Enable
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Bi-directional muting: The MS3 is an input to the MSR42 from a PLC output card. The MS3 enables the muting function to be performed. If a high signal is not detected on MS3, the muting function will not operate even if the MS1 and MS2 beams are broken. Only if MS3 is high and both MS beams are broken in-turn and then cleared in-turn, will the light curtain allow material through without initiating a machine stop.