JSTD20 Conventional Two-Hand Device
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Technical Data
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Manufacturer................................ JOKAB SAFETY
Ordering Data............ JSTD20A, (without E-Stop)
JSTD20B (with E-Stop)
(available floor mount JSTS30 without
distance ring, JSTS31 with distance,
JSTS32 distance ring only)
Color................ black housing, black pushbuttons
black floor stand
Weight............................................... JSTD20 6.4Kg
JSTS30 20Kg, JSTS31 23Kg
Temperature.............. -10ºC to +70ºC (operating)
-20ºC to +70ºC (storing)
Material
Housing........................................... 3mm mild steel
Gasket.............................................................. rubber
Push-buttons.................................................. plastic
Operating Push-buttons
Diameter......................................................... 60 mm
Operating Force................................................... 9 N
Operating Distance.............................. 3.5 +/- 1mm
Mechanical Life................................ 106 operations
Emergency Pushbutton (JSTD20B only)
Diameter......................................................... 40 mm
Operating Force................................................. 40 N
Mechanical Life.......................... 3 x 105 operations
Ingress Protection........................................... IP65
Contacts.......................... mechanically separated
contact blocks
Operating Pushbuttons...................... 1 NO + 1 NC
Emergency Pushbuttons.............................. 2 x NC
Isolation Voltage...................................... 690V rms
Contact Resistance...................................... 20mW
Rated Current..................................................... 10A
Utilization Categories.................... AC 15 240V 3A
DC 13 240V 0.27A
Cabling............................... screw clamp terminals
1 or 2 wires with max. section 2.5mm2
Contact Material................... silver alloy on brass
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Electrical Connection
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The two-hand device is intended for use with JOKAB SAFETY's JSBR4 safety relay to ensure the highest level of safety. The JSBR4 ensures that all contacts have returned to their deactivated positions before a new start is allowed. The safety relay also requires that all contacts are activated within 0.5 seconds. The JSBR4 gives a stop signal if one or both of the pushbuttons are released.
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