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Inputs and Outputs Wiring
January 2009 UDA2182 Universal Dual Analyzer Product Manual 115
7.2 General Wiring Practices
WARNING
Qualified personnel should perform wiring only.
Safety precaution
WARNING
A disconnect switch must be installed to break all current
carrying conductors. Turn off power before working on
conductors. Failure to observe this precaution may result in
serious personal injury.
WARNING
An external disconnect switch is required for any hazardous
voltage connections to the relay outputs.
CAUTION
To avoid damage to the case when connecting to a rigid metallic conduit system, the
conduit hub must be connected to the conduit before the hub is connected to the
enclosure
Avoid damage to components
ATTENTION
This equipment contains devices that can be damaged by electrostatic discharge (ESD). As
solid-state technology advances and as solid-state devices get smaller and smaller, they
become more and more sensitive to ESD. The damage incurred may not cause the device to
fail completely, but may cause early failure. Therefore, it is imperative that assemblies
containing static sensitive devices be carried in conductive plastic bags. When adjusting or
performing any work on such assemblies, grounded workstations and wrist straps must be
used. If soldering irons are used, they must also be grounded.
A grounded workstation is any conductive or metallic surface connected to an earth ground,
such as a water pipe, with a 1/2 to 1 megohm resistor in series with the ground connection. The
purpose of the resistor is to current limit an electrostatic discharge and to prevent any shock
hazard to the operator. The steps indicated above must be followed to prevent damage and/or
degradation, which may be induced by ESD, to static sensitive devices.
Immunity compliance
In applications where either the power, input or output wiring are subject to
electromagnetic disturbances, shielding techniques will be required. Grounded metal
conduit with conductive conduit fittings is recommended.