Spectrum Controls 1756-CTR8, User Manual

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8-2 Chapter 8: Maintaining Your Module and Ensuring Safety
Owner’s Guide 0300199-01 Rev. D
•
Standing Clear Of Machinery – When troubleshooting a problem with any
ControlLogix system, have all personnel remain clear of machinery. The
problem may be intermittent, and the machine may move unexpectedly.
Have someone ready to operate an emergency stop switch.
WARNING
WARNING
POSSIBLE EQUIPMENT OPERATION
Never reach into a machine to actuate a switch. Also, remove all electrical
power at the main power disconnect switches before checking electrical
connections or inputs/outputs causing machine motion.
Failure to observe these precautions can cause personal injury or
equipment damage.
• Safety Circuits – Circuits installed on machinery for safety reasons (like
over-travel limit switches, stop push-buttons, and interlocks) should always
be hard-wired to the master control relay. These circuits should also be wired
in series so that when any one circuit opens, the master control relay is de-
energized, thereby removing power. Never modify these circuits to defeat
their function. Serious injury or equipment damage may result.
WARNING
WARNING EXPLOSION HAZARD
SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY
FOR CLASS I DIVISION 2.
WARNING
WARNING EXPLOSION HAZARD
DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN
SWITCHED OFF OR THE AREA IS KNOWN TO BE NON-
HAZARDOUS
NOTE
THIS EQUIPMENT IS SUITABLE FOR USE IN CLASS I, DIVISION 2,
GROUPS A, B, C, AND D OR NON-HAZARDOUS LOCATIONS
ONLY.
WARNING
WARNING EXPLOSION HAZARD
WHEN IN HAZARDOUS LOCATIONS, TURN OFF POWER BEFORE
REPLACING OR WIRING MODULES.