JSBRT11 Safety Relay
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A Flexible Safety Relay with Various Outputs
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The JSBRT11 has been designed to provide the safety system circuit designer with the ability to select from both a range of input connection configurations and either automatic or supervised reset.
The unit can be hardwire configured to operate in either of the following input configurations:
- Mode 1: Single Channel (1 NO contact from +24 VDC), safety category 1
- Mode 2: Dual Channel (2 NO contacts from +24 VDC), safety category 3
- Mode 3: Dual Channel (1NO, 1 NC contacts from +24 VDC), safety category 4
- Mode 4: Dual Channel (1 N) contact from 0 V and 1 NO contact from +24 VDC), safety category 4
In addition, the unit can also be used to test that contactors and valves have fallen/returned to their 'reset' state before a new 'start' signal is given.
Safety Level
The JSBRT11 has dual and monitored internal safety functions. Power failure, internal component failures or external interference (with the exception of short circuiting of input contact when used in a single channel input mode) do not result in a dangerous function.
When wired for supervised reset, should a short circuit appear across the reset input the relay will not automatically reset when the input/inputs are made. Only when the supervised reset input is made and broken will the relay reset.
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Applications:
- Emergency Stops
- Light Curtains
- Three Position Devices
- Interlocked Gates/Hatches
- Magnetic Switches
- Light Beams
- Foot-Operated Switches
Features:
- Selectable inputs and safety category
- Manual supervised or automatic reset
- Width 100 mm
- LED indication of supply, inputs and outputs
- 7 NO + 2 NC relay outputs
- 24 VDC
- Quick release connector blocks
Regulations and Standards
The JSBRT11 is designed and approved in accordance with appropriate standards. Examples of such are: EN 292-1/2, EN 60204-1, EN 954-1.
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The JSBRT11 provides detection of contact failure in the inputs when wired in dual channel mode. Both inputs have to be opened and closed in order to enable the reactivation of the relay. The highest safety level of the JSBRT11 is in configuration mode 3 or 4 because all short circuits are supervised, i.e. a short circuit between the inputs leads to a safe state as the outputs drop out.
Connection Examples
For examples of how our safety relays can solve various safety problems, please see the page of "Connection Examples".
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Approvals
   
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