Rockwell Automation 900-TC32 Digital Temperature Controllers, Series B - Manual (Page 43)

Publication 900-UM007D-EN-E - January 2011
Preparations 2-5
ATTENTION
!
• Do not allow metal fragments or lead wire scraps to
fall inside the Bulletin 900 Controller. These may cause
electric shock, fire, or malfunction.
• Never disassemble, repair, or modify the Bulletin 900
Controller with line or field device power applied.
Doing so may cause electric shock, fire, or
malfunction.
• Do not use the Bulletin 900 Controller in flammable
and explosive gas atmospheres.
• Use the Bulletin 900 Controller within the rated supply
voltage. Not doing so may cause controller damage or
fire.
• Configure all controller settings according to the
control target of the Bulletin 900 Controller. If the
settings are not appropriate for the control target, the
controller may operate in an unexpected manner,
resulting in damage to the product or personal injury.
• To maintain safety in the event of a product
malfunction, always take appropriate safety measures,
such as installing an alarm on a separate line to prevent
excessive temperature rise. If a malfunction prevents
proper control, an accident may result.
• Do not wire unused terminals.
• Make sure to observe correct polarity when wiring the
controller terminals.
• Power supply, input, output, and communication
terminals (for models with communications) have
basic insulation between them.
When double insulation is required, apply
supplemental insulation defined in IEC 60664 that is
suitable for the maximum operating voltage with
clearances or solid insulation.