Do-more T1H Series PLC User Manual, 1st Edition, Rev. C
A-10
Appendix A: European Union Directives (CE)
Items Specific to the Do-more T1H Series PLC
• The rating between all circuits in this product are rated as basic insulation only, as appropriate for
single fault conditions.
• There is no isolation offered between the PLC and the analog inputs of this product.
• It is the responsibility of the system designer to earth one side of all control and power circuits, and
to earth the braid of screened cables.
• This equipment must be properly installed while adhering to the guidelines of the installation
manual DA–EU–M (available for download at AutomationDirect Technical Support Manuals),
and the installation standards IEC 1000–5–1, IEC 1000–5–2 and IEC 1131–4.
• It is a requirement that all PLC equipment must be housed in a protective steel enclosure,
which limits access to operators by a lock and power breaker. If access is required by operators
or untrained personnel, the equipment must be installed inside an internal cover or secondary
enclosure. A warning label must be used on the front door of the installation cabinet as follows:
Warning: Exposed terminals and hazardous voltages inside.
• It should be noted that the safety requirements of the machinery directive standard EN60204–1
state that all equipment power circuits must be wired through isolation transformers or isolating
power supplies, and that one side of all AC or DC control circuits must be earthed.
• Both power input connections to the PLC must be separately fused using 3 amp T-type anti–surge
fuses, and a transient suppressor fitted to limit supply overvoltages.
• If the user is made aware by notice in the documentation that if the equipment is used in a manner
not specified by the manufacturer, the protection provided by the equipment may be impaired.
