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Rockwell Automation Publication 440R-UM014D-EN-P - December 2019

23

Chapter

 5

Timing Diagram

Timing Diagram Procedure

A typical timing diagram of MSR55P safety relays is shown in 

Figure 14 on 

page 24

.

1. Upon power-up, the MSR55P safety relay performs internal safety 

checks.

2. With the motor at standstill, the outputs are energized.
3. When the motor is turned ON, the outputs are de-energized.
4. A motor stop command is issued, and the motor spins down.
5. The back EMF reaches the level of the V

m

 setting, the standstill delay 

timer starts. The position of the t

s

 potentiometer determines the 

duration of the delay.

6. When the timing cycle completes, standstill is considered achieved and 

the outputs are energized.

7. If one of the monitoring voltage signal lines break, the outputs are 

de-energized and the semiconductor ERR output turns ON after 2.5 

seconds.

8. If the line is reconnected, no changes are noticed if the manual fault reset 

is used.

9. When the fault reset is closed, the outputs are energized.

10. The motor is turned back on, and the safety outputs are de-energized.
11. When voltage-free contacts control the motor, the MSR55P safety relay 

can detect line breakage on L2 and L3. After a 2.5 second delay, the 

semiconductor ERR signal turns ON. The ERR signal must be used to 

initiate a stop command to the motor. The outputs remain de-energized.

12. The line break is reinstated.
13. Upon closure of the reset signal, the outputs are energized.

IMPORTANT

The MSR55P safety relay does not detect line breakage with motor 
running and connected to an electronic drive.

Summary of Contents for Allen-Bradley Guardmaster 440R-S35011

Page 1: ...MSR55P Back EMF Minotaur Safety Relay Catalog Numbers 440R S35011 440R S35012 440R S35013 440R S35014 440R S35015 440R S35016 User Manual OriginalInstructions...

Page 2: ...nformation circuits equipment or software described in this manual Reproduction of the contents of this manual in whole or in part without written permission of Rockwell Automation Inc is prohibited T...

Page 3: ...Clamp Terminals 10 Enclosure Considerations 10 Prevent Excessive Heat 11 Chapter3 Power Ground and Wire Wiring Requirements and Recommendation 13 Wire Size and Terminal Torque 13 Terminal Assignment 1...

Page 4: ...dicator Step 1 35 ERR Indicator Flashes One Time Step 2 36 Wire Break at L1 L2 or L3 Step 3 36 Feedback Circuit Open Step 4 37 ERR Indicator Flashes 5 Times Step 5 38 ERR Flashes 6 or 7 Times Step 6 3...

Page 5: ...initions of terms that are not listed here refer to the Allen Bradley Industrial Automation Glossary publication AG 7 1 N C Normally Closed An electrical contact whose normal state that is no pressure...

Page 6: ...n error is detected and OFF when no error is detected Table 1 State of the Outputs Additional Resources These documents contain additional information concerning related products from Rockwell Automat...

Page 7: ...rops to a certain threshold simultaneously in both channels for a certain duration standstill is considered achieved and the outputs are energized If the voltage measured on terminals L1 L2 L3 of the...

Page 8: ...able The key differences are the power supply to terminals A1 A2 and the setpoint voltage to determine safe standstill speed as the motor spins to a stop In general select models that have the lower s...

Page 9: ...mensions Figure 2 Dimensions mm in DIN Rail Mounting and Removal MSR55P safety relays mount onto 35 mm 1 4 in DIN rails 35x7 5x1 mm 1 4x0 3x0 03 in EN 50022 5x7 5 1 Hold the top at an angle Figure 3 2...

Page 10: ...lock rotate the screwdriver The terminal block can then be removed from the housing Spring Clamp Terminals As an accessory you can purchase removable terminals with spring clamps The spring clamp term...

Page 11: ...ired to comply with certain product safety certifications For more information see Industrial Automation Wiring and Grounding Guidelines publication 1770 4 1 for additional installation requirements N...

Page 12: ...12 Rockwell Automation Publication 440R UM014D EN P December 2019 Chapter 2 Installation Notes...

Page 13: ...em Use tape shrink tubing or other more dependable means to label wire Use colored insulation as well to identify wiring by signal characteristics For example use blue for DC wiring and red for AC wir...

Page 14: ...Terminal Function A1 A2 Power supply L1 L2 L3 Motor connections 11 12 Voltage free redundant monitoring non safety contacts N C 23 24 33 34 43 44 Voltage free redundant safety contacts N O 53 54 Volt...

Page 15: ...e solid state auxiliary status signals ON and ERR are used Figure 6 Power Supply Connections MotorWinding Inputs The motor windings are connected to terminals L1 L2 and L3 The connections must be made...

Page 16: ...rating depends on the current through each of the outputs and the ambient temperature Figure 9 shows a graphical representation of the current limit over the ambient temperature range Calculate the to...

Page 17: ...tage transients and electrical noise from radiating into adjacent systems Since this is a safety related system the surge suppression device must connected across the load device The surge suppression...

Page 18: ...rminals 53 54 This contact can accommodate a DC or AC voltage up to 230V Terminal 53 54 closes when the safety outputs are energized MSR55P safety relays have two semiconductor auxiliary outputs The O...

Page 19: ...the No Monitoring diagram in Figure 12 If additional devices must be controlled safety control relays or contactors can be connected to the safety outputs of the MSR55P safety relay The MSR55P safety...

Page 20: ...e by a push button or by a PLC via an interposing relay the push button or relay must have the necessary insulation between the motor voltage and PLC potential Figure 13 shows two typical connections...

Page 21: ...ng while maintaining a safe application Vm Monitoring Voltage The trip voltage of the back EMF is adjusted by the ten position Vm potentiometer When the back EMF drops below the voltage level the MSR5...

Page 22: ...setting the standstill delay timer starts The delay time is set by the 10 position ts potentiometer During the timing cycle the OUT indicator flashes Table 5 shows the delay time for each setting Afte...

Page 23: ...d the outputs are energized 7 If one of the monitoring voltage signal lines break the outputs are de energized and the semiconductor ERR output turns ON after 2 5 seconds 8 If the line is reconnected...

Page 24: ...S Stop Reset X3 X2 Reset X3 X2 Line breakage Line breakage See text Standstill detected Back EMF reaches trip point Motor runs down Motor on Motor on Safety Outputs Energized Supply voltage on L1 L2 L...

Page 25: ...feedback circuit failure and internal failures Broken wire offset failures and feedback circuit failures can be restored by using manual reset They can also be reset automatically after removing the f...

Page 26: ...the case where the motor is spinning under the command of an electronic drive the outputs are de energized Line breakage is not detected by the MSR55P safety relay This state is still considered a saf...

Page 27: ...ty feature the two input signals L2 and L3 are compared continuously This feature allows the MSR55P safety relay to detect internal failures in one measuring signal If the signals are different for at...

Page 28: ...ilures cause the output relays to switch off immediately the semiconductor output ERR to switch on and the VS indicator to change from green to red Examples for internal failures include Failure on sa...

Page 29: ...ress the Start button to energize the PowerFlex 525 drive controlled motor Production Stop A normal production stop is accomplished by pressing the Stop push button Safety Stop A safety stop is initia...

Page 30: ...E Stop 800FM MT64MX02S Reset 800FM F611MX10 Lock Unlock 800FM SM22MX10 Gate Unlocked 800FM P4MN3R Error Status ON Status ON Status Status To PLC Gatecontrol powersupply Gatecontrol circuit M S1 S2 1...

Page 31: ...start and stop the motor Safety Stop Press the E stop to stop the motor the motor coasts to a stop When the motor spins down to a speed below theVm setting of 70 mV the MSR55P safety relay begins its...

Page 32: ...g of 70 mV the MSR55P safety relay begins its timing sequence After 3 seconds the MSR55P safety relay energizes its outputs Safety Stop When the MSR55P safety relay energizes its outputs K4 and K5 are...

Page 33: ...or not operating properly It describes the procedures that you use to troubleshoot your relay Tools Needed To troubleshoot your MSR55P safety relay you need the following tools RequiredTools Medium si...

Page 34: ...properly Vs indicator green Go to Step1 page 35 Go to Step2 page 36 Go to Step3 page 36 ERR indicator flashing 5x No Yes Yes Yes No Yes No ERR indicator flashes 1x ERR indicator flashes 2x or 3x No Go...

Page 35: ...re 20 If the voltageat theterminals is withinspecification partiallypopoutthe terminalblocks for A1 and A2 and then reinsert them If the PWR indicator does not turn on then you must replace the MSR55P...

Page 36: ...flashing and the ERR semiconductor output turns OFF If the ERR semiconductor output is an input to the PLC that stops the process if there is an error with the MSR55P safety relay a momentary voltage...

Page 37: ...rough the components to find the open circuit If the circuit is closed measures 0 try cycling the power to the MSR55P safety relay If the ERR continues to show four flashes then replace the MSR55P saf...

Page 38: ...he same on L2 and L3 then an internal fault exists and the MSR55P safety relay must be replaced When the fault is corrected the motor must be rotated above Vm and then stopped to reset the MSR55P safe...

Page 39: ...ut is not available at point 2 check the wiring at the relay terminals If the wiring is okay then you must replace the MSR55P safety relay Figure 24 Check the Output WiringVoltage Output Is OnWhile Mo...

Page 40: ...40 Rockwell Automation Publication 440R UM014D EN P December 2019 Chapter 8 Troubleshooting Notes...

Page 41: ...ermoplastic withVO behavior according to UL94 Attribute Standard Value Temperature operating C F IEC EN 60068 1 25 60 13 140 See Figure 9 on page 16 Temperature storage C F IEC EN 60068 1 40 75 40 167...

Page 42: ...m 1 0 1 1 1 2 1 5 2 0 2 8 5 0 8 0 Hysteresis for detection of running motor 100 Release delay for detection of running motor ms 100 Standstill time delay ts s 0 2 6 adjustable Attribute Value Wiring t...

Page 43: ...and tested to meet the following directives EMC Directive This product is designed and tested to meet the European Council Directive 2004 108 EC on Electromagnetic Compatibility EMC and the following...

Page 44: ...This product is intended for use in an industrial environment The performance of the safety function is dependent on the structure of all devices that comprise the safety function Table 16 and Table 1...

Page 45: ...Performance Level PLe in accordance with ISO 13849 1 Table 17 lists the pertinent ratings for ISO 13849 1 Table 17 Performance Level Category Attribute Rating SIL CL IEC EN62061 3 SIL IEC EN 61508 IEC...

Page 46: ...46 Rockwell Automation Publication 440R UM014D EN P December 2019 Appendix B Regulatory Approval Notes...

Page 47: ...ntal specification 41 ERR flashing code 26 ERR indicator flashes 1 time 36 flashes 5 times 38 flashes 6 or 7 times 38 error potentiometer 27 E stop with contactors 31 with electronic drive 29 European...

Page 48: ...10 removal DIN rail 10 requirements wiring 13 S safety output 16 safety output specification 42 SIL rating 45 simultaneity measuring signal 27 size wire 41 spacing 10 specification 41 environmental 4...

Page 49: ......

Page 50: ...nd the Direct Dial Code for your product Use the code to route your call directly to a technical support engineer http www rockwellautomation com global support direct dial page Literature Library Ins...

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