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6-1. Wiring Procedure
The analog output line and power line of the gas detector are not isolated from each
other. When using the detector with external devices, provide isolation to prevent noise
from other power lines from interfering with the analog output of the detector.
When wiring, place wires to avoid potential noise sources (e.g. large power
transformers, motors, and powers supply units).
Ensure cables between the gas detector and external devices are connected correctly.
Gas alarm contact output is intended to be used with resistive loads only. If used with
inductive loads, high voltage surge will be generated resulting in damage to the device
or relay contacts.
Turn off the gas detector before fuse replacement.
Keep the connection cables (power and signal lines from the detector) away from other
power lines.
When wiring, place wires to avoid mechanical stress on the wiring.
Turn off the gas detector before wiring to prevent electric shocks.
Ensure open collector output is connected (TA: + / TC: -). Due to the built-in protection
diode, incorrect polarities will cancel an active trouble alarm output.
When installing the gas detector, ensure there is enough space
below/above the detector to allow for installation/removal/wiring activities.
(Recommended: More than 100mm above the unit and 150mm below the
unit.)
When installing more than one detector side by side, make sure to leave
enough space right and left to the gas detector to allow for
installation/removal of the main unit. (Recommended: More than 30mm
right and left to the unit.)
NOTE
