JSBRT11 Safety Relay
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Technical Data
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Manufacturer.................................. JOKAB SAFETY
Ordering Data.......... JSBRT11 and supply voltage
Color................................................. black and beige
Weight......... 610 g (24 VDC), 790 g (24-230 VAC)
Power Supply A1 - A2..................... 24 VDC+/-15%
24/48/115/230 VAC, +/-15%, 50-60 Hz
Power Consumption....................................... <3 VA
Relay Outputs....................................... 7 NO + 2 NC
Maximum switching
capacity res. load AC............. 6A/250 VAC/1500 VA
Maximum switching
capacity res. load DC................. 6A/24 VDC/150 W
Minimum load.......................................... 10mA/10 V
(if load on contact has not exceeded 100 mA)
Maximum input wire
res. at nom. voltage................................... 200 Ohm
(S14, S24, S34, X1, X4)
100 Ohm (S44)
Response Time
At deactivation (input-output)...................... <15 ms
At activation (input-output)........................... <30 ms
Terminals
Maximum screw torque................................... 1 Nm
Single strand......................... 1x4mm2/2x1.5mm2
Conductor with
socket contact....................... 1x2.5mm2/2x1mm2
Air and creep distance............. 4kV/2 IEC 60664-1
Mounting.......................................... 35 mm DIN rail
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Note: Connector blocks are detachable without
cables having to be disconnected.
Operating Temperature
Range ............................................... -10ºC to +55ºC
Function Indication..................... Electrical supply,
Input 1 and 2,
Output relays 1 and 2
Protection Class
Enclosure....................................... IP 40 IEC 60529
Connection blocks........................ IP 20 IEC 60529
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Technical Description
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 The supply voltage is connected across A1 and A2. The input connection configuration and type of reset required is set by connecting the unit as shown in the diagrams below.
When the input/inputs and the test/supevised reset are made K1 and K2 energize. K1 and K2 will de-energize if the power is disconnected or a stop signal is given in accordance to the configuration mode wired. Both K1 and K2 have to be deactivated before the outputs of the JSBRT11 can be closed again.
Configuration Mode 1
When the single input opens both K1 and K2 relays are deactivated.
Configuration Mode 2
Both inputs have to be closed in order to enable the unit to be activated. A stop signal is given if both or one input is opened. Both inputs have to be opened and reclosed in order to enable the reactivation of the unit. If the possibility of short circuits between the inputs cannot be excluded, configuration mode 3 or 4 should be used in order to reach the high safety level.
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Configuration Mode 3
One input has to be closed and the other input has to be opened in order to enable the unit to be activated. A stop signal is given if both or one input change state. Both inputs have to change state in order to give a dual stop function and to allow a new start after stop.
Configuration Mode 4
Operation as mode 2 but short circuits between the inputs leads to a safe state, i.e. the relays inside the JSBRT11 will drop out.
Supervised reset connection
The input to X1 (see diagram below) has to be closed and opened in order to activate the unit, after input/inputs are made according to the configuration mode selected. This mode is selected when X1 - X4 is open circuit.
Automatic reset connection
The input has to be closed in order to activate the unit after input/inputs are made according to the configuration mode selected. This mode is selected when a connection between X1 and X4 is made.
Test
Test contacts of contactors can be connected between S53 and X1 for supervision.
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Electrical Connections
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Single Channel, 1 NO from +24V*
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Dual Channel, 1 NO from +24V, 1 NO to 0V*
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Dual Channel, 2 NO from + 24V*
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Supervised Manual Reset
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Dual Channel, 1 NO, 1 NC from +24V*
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Automatic Reset
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| *Note: With the input conditions shown, the JSBRT11 is in its de-energized state, i.e. output contacts are open. |
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