JSR3T Expansion Relay
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Technical Data
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Manufacturer.................................. JOKAB SAFETY
Ordering Data................................................. JSR3T
Color................................................. black and beige
Weight................................................................ 158 g
Power Supply................................... 24 VDC+/-15%
24 VAC +/-15%, 50-60Hz
Power Consumption....................................... <2 VA
Relay Outputs.............................................. 2 x 1 NO
(see connection examples)
Maximum switching
capacity res. load AC............ 4A/250 VAC/1000 VA
Maximum switching
capacity res. load DC................. 4A/24 VDC/100 W
Minimum load.......................................... 10mA/10 V
(if load on contact has not exceeded 100 mA)
Maximum input wire
res. at nom. voltage................................... 100 Ohm
Response Time
At activation.................................................... <20 ms
At deactivation..... <.05 - 10.0 sec. at nom. voltage
(Selected delay can be lowered by up to
approximately 30% by means of preset
potentiometer on front panel.)
Mounting........................................... 35 mm DIN rail
Terminals (removable)
Maximum screw torque.................................... 1 Nm
Single strand.......................................... 2x1.5mm2
Conductor
with socket contact................................... 2x1mm2
Air and creep distance.............. 4kV/2 IEC 60664-1
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LED Indication............................................. Outputs
Operating Temperature
Range.............................................. -10ºC to +55ºC
Protection Class
Enclosure...................................... IP 40 IEC 60529
Terminals...................................... IP 20 IEC 60529
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Technical Description
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When supply voltage is connected to A1 and A2, relays K1 and K2 are activated. When the supply voltage is removed, relays K1 and K2 remain energized for a time period determined by the hardwire link configuration chosen (set by connecting links on the terminals Y1, Y2, Y3 and Y4) and the setting of the Time Trim potentiometer.
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Note 1: Max. time set by hardwire links can only be reduced (up to approx. 40% reduction) by Time Trim potentiometer.
Note 2: Both the output contacts of K1 and K2 (13-14 and 23-24) must be used. Output contacts must be either connected in series (forming one safety output) or used in parallel circuits in order to obtain necessary redundancy.
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Electrical Connections
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It is recommended that all switched loads are adequately suppressed and/or fused in order to provide additional protection for the safety contacts.
Selection of time delay by hardwire links (Y1, Y2, Y3 and Y4.) Selected delay can be lowered by up to approximately 30% by means of preset potentiometer on front panel.
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