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7/13 jokab safety
ABB Low Voltage Industrial Products 0312
7
Safety Relays
Selection
RT6
RT7
RT9
JSBRT11
JSBR4
JSBT4
JSBT5T, BT50T, BT51T
JSBT5, BT50, BT51
JSHT1A/B
JSHT2A/B/C
E1T
JSR1T
JSR2A
JSR3T
Input alternatives
(see also technical data on the next page)
Single-channel, 1 NO from +24 V
Category 1, up to PL c
The input must be closed before the
outputs can be activated. A stop signal
is given when the input is opened.
Two-channel, 2 NO from +24 V
Category 3, up to PL d
Boththeinputsmustbeclosedbeforethe
outputs can be activated. A stop signal
is given if one or both of the inputs are
opened.Boththeinputsmustbeopened
and reclosed before the outputs can be
reactivated. A short-circuit between the
inputs is not monitored by the safety
relay.Category4canonlybeachievedifa
safetydevicewithshortcircuitmonitored
outputs is connected.
Two-channel, 1 NO & 1 NC from +24V
Category 4, up to PL e
One input must be closed and one must
be opened before the outputs can be
activated. A stop signal is given if one or
both of the inputs change position or if
the inputs short-circuit. Both inputs must
be put into their initial position before the
outputs can be reactivated.
Two-channel, 1 NO from 0 V &
Category 4, up to PL e
Boththeinputsmustbeclosedbeforethe
outputs can be activated. A stop signal
is given if one or both of the inputs are
opened.Boththeinputsmustbeopened
and reclosed before the outputs can be
reactivated. A Stop signal is given if
thereisashort-circuitbetweentheinputs.
Safety relays
Safety-
timers
Expansion relays
Interlocking switch/Gate/Hatch
Light curtains
Light beams
Safety mats
Contact strips
Two-hand control device
Emergency stop
Hold to run/enabling device
Foot control device
Area supervision
Time resetting
Time bypassing
Inching
Output expansion
Delayed output