ISO and ISL Series
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The ISO/ISL Series multiple channel devices
are used to provide a safe and reliable means of controlling loads from
hazardous locations without releasing sufficient energy under normal or
abnormal conditions to cause ignition of a flammable or combustible
atmospheric mixture while in its most easily ignited concentration. An
isolated output turns on when the corresponding control switch input
from the hazardous location is activated. When using normally closed
control switch inputs, a jumper should be installed between terminals 1
and 2. Normally open control switch inputs do not require the optional
jumper. When the non-latching ISO Series control switch input is
activated, its corresponding output turns on. When the control switch
input is deactivated, its output turns off. When the latching ISL Series
control switch input 2, 3 or 4 is activated, its corresponding output
turns on. When control switch 2, 3 or 4 is deactivated, its
corresponding output remains latched on as long as control switch input
1 is activated; otherwise it turns off immediately. Control switch input
1 also controls output 1 just as in the non-latching ISO Series.
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