ESR5
Safety relays are intended to reliably monitor the signals from safety devices at all times and switch off quickly in an emergency. Eaton’s ESR5 safety relays provide optimal safety and a high degree of reliability for plant machinery. The ESR5 enables applications to meet the highest safety ratings in accordance with EN954-1, EN ISO 13849-1 up to PL e, and IEC 62061 up to SILCL 3.
Safety functions:
EMERGENCY-STOP disconnection
Eaton provides one and two-channel variants for the implementation of safety-oriented applications. The internal logic of the safety relays monitors the safety circuits (Emergency-Stop, safety door) and activates the enable paths when in a fault-free state. The enable paths are switched off after actuation of the safety devices or in the event of a fault. Faults which occur in the control circuit such as an earth fault, cross-short and open circuits are reliably detected. Activation of the enable path is prevented in the event of a fault.
Monitoring movable guards
Accessible hazard areas must be secured. The position of the movable safety device is detected using position switches or non-contact sensors, which are monitored and evaluated by a secure logic unit. A risk assessment provides the necessary degree of risk reduction through the safety device.
Monitoring light curtains
The access to dangerous zones is monitored by light curtains. An accidental or unallowed intrusion into dangerous zones is detected and evaluated by safety relays ESR.
Two-hand monitoring
On machines which have a high potential for injury, both of the operator's hands must be located outside the hazardous area before the hazardous machine movement can be initiated. In order to protect the operating personnel, it is necessary that the two hand control is operated with both hands simultaneously within a time window of 500 ms, in order to operate the machine or to keep the machine in an operational state. Monitoring of the timing sequence is assumed by the ESR5-NZ-21-24VAC-DC, which can be used for two hand controls which conform to the safety requirements of category IIIC to EN 574.
Advantages:
Technical safety parameters:
EMERGENCY-STOP disconnection
Eaton provides one and two-channel variants for the implementation of safety-oriented applications. The internal logic of the safety relays monitors the safety circuits (Emergency-Stop, safety door) and activates the enable paths when in a fault-free state. The enable paths are switched off after actuation of the safety devices or in the event of a fault. Faults which occur in the control circuit such as an earth fault, cross-short and open circuits are reliably detected. Activation of the enable path is prevented in the event of a fault.
Monitoring movable guards
Accessible hazard areas must be secured. The position of the movable safety device is detected using position switches or non-contact sensors, which are monitored and evaluated by a secure logic unit. A risk assessment provides the necessary degree of risk reduction through the safety device.
Monitoring light curtains
The access to dangerous zones is monitored by light curtains. An accidental or unallowed intrusion into dangerous zones is detected and evaluated by safety relays ESR.
Two-hand monitoring
On machines which have a high potential for injury, both of the operator's hands must be located outside the hazardous area before the hazardous machine movement can be initiated. In order to protect the operating personnel, it is necessary that the two hand control is operated with both hands simultaneously within a time window of 500 ms, in order to operate the machine or to keep the machine in an operational state. Monitoring of the timing sequence is assumed by the ESR5-NZ-21-24VAC-DC, which can be used for two hand controls which conform to the safety requirements of category IIIC to EN 574.
Advantages:
- Compliant to highest safety standards
- Narrow width
- Many safety switching contacts and up to 5 enable and 2 signal current paths
- Approved to TüV Rheinland, UL/CUL, CSA
Technical safety parameters:
- Up to category 4 to EN 954-1
- Up to Performance Level PL e to EN ISO 13849-1
- Up to Safety Integrity Level SIL CL 3 to IEC 62061
- Up to Safety Integrity Level SIL 3 to IEC 61508
Loading Content..Please wait!
