Recommended Circuits for Motor Control in Safety Chain Applications Using an STO TeSys H Motor Starter
Overview
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DAMAGE TO MOTOR
Connect the TeSys H motor starter as specified in the wiring diagrams.
Failure to follow these instructions can result in equipment damage.
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This section provides recommended circuits for safe shutdown of motors that use an STO TeSys H motor starter. In recommended circuits, shutdown is achieved by interrupting the control input on I1 or I2.
The circuits in this section are for applications where safe shutdown is a normal operating state, such as guard door applications and two-hand control applications.
The following shutdown applications are included in this section:
Implementation
You can implement single-channel or dual-channel configurations. Route the input wiring for the direction 1 or direction 2 activation terminal and the corresponding ground, through the safety processing device.
If cross-error exclusion is not allowed, cut off the supply voltage with a dual-channel or two-pole configuration. The supply voltage to the motor starter is cut off with a single-channel configuration. Therefore, use this type of installation for SIL 3 (category 3, category 4) only if cross-error exclusions are allowed. For example, use this type of installation when the motor starter and the safety processing device are installed in the same control panel.
Dual-Channel Applications with a TM3SAC Safety Processing Device - Cat.3, PLd According to EN ISO 13849:2006 and SIL 2 According to EN IEC 62061:20050
This dual-channel safety chain application uses the following modules:
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Emergency stop or guard
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TM3SAC safety processing device
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STO TeSys H motor starter
S1 Emergency stop button with two NC contacts, Harmony XB4 or safety limit switches Preventa XCS.
S2 Start button.
Dual-Channel Applications with a TM3SAF53 Safety Processing Device - Cat.4, PLE According to EN ISO 13849:2006 and SIL 3 According to EN IEC 62061:2005
This dual-channel safety chain application uses the following modules:
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Emergency stop or guard
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TM3SAF53 safety processing device
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STO TeSys H motor starter
S1 Emergency STOP button with two NC contacts, Harmony XB4 or Preventa XCS safety limit switches
S2 Start button: (1) monitored start, (2) non-monitored start
Dual-Channel Input and Single-Channel Output with an XPSAC Safety Processing Device - Cat.3, PLd According to EN ISO 13849:2006 and SIL 2 According to EN IEC 62061:2005
This dual-channel input, single-channel output safety chain application, uses the following modules:
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Emergency stop or guard
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Preventa XPSAC safety processing device
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STO TeSys H motor starter
Dual-Channel Input and Dual-Channel Output with an XPSAF Safety Processing Device - Cat.4, PLE According to EN ISO 13849:2006 and SIL 3 According to EN IEC 62061:2005
This dual-channel input, dual-channel output safety chain application uses the following modules:
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Emergency stop or guard
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Preventa XPSAF safety processing device
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STO TeSys H motor starter
Dual-Channel and Extended XPSMCM Modular Safety Controller - Cat.3, PLd According to EN ISO 13849:2006 and SIL 2 According to EN IEC 62061:2005
This dual-channel safety chain application uses the following modules:
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Emergency stop or guard
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XPSMCM modular safety controller
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STO TeSys H motor starter
Dual-Channel and Extended XPSMCM Modular Safety Controller - Cat.4, PLE According to EN ISO 13849:2006 and SIL 3 According to EN IEC 62061:2005
This dual-channel safety chain application uses the following modules:
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Emergency stop or guard
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Extended XPSMCM modular safety controller
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STO TeSys H motor starter
