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WHITE, GREY and BLACK are preferred colors for actuators
which cause movement while they are actuated and stop the
movement when they are released (such inching jogging
actuators). GREEN also permitted.Color selection
Color selection according IEC 073
IEC 073 specifies coding principles for indicators and actuators and gives recommendation regarding the use colors.
Use WHITE and BLACK for specific meanings
Where the colors WHITE and BLACK are used distinguish
between START and STOP OFF actuators, then the color
WHITE shall used for START actuators and the color
BLACK shall used for STOP OFF actuators. For detailed information, see the standard. GREEN shall not used. excerpt from the standard given
below. The color RED
shall used only cases where the same actuator, other than
a push-button, used for both EMERGENCYSTOP OFF and
normal operation. RED shall not used.
1SFC151004C0201 Pilot Devices 87
.
The colors YELLOW and GREEN shall not used.
GREEN also permitted. The color such STOP
/ OFF actuators shall accordance with STOP OFF actuators
above. RED is
also permitted. RED shall not used.
START Actuators
WHITE, GREY and BLACK are the preferred colors for START /
ON actuators, which cause the closing switching devices and
the equipment start, with the main preference being for WHITE.
The same Actuators serving for START STOP OFF
WHITE, GREY and BLACK are the preferred colors for actuators
which, when actuated several times, act alternately START /
ON and STOP OFF actuator.
Meaning colors General principles
Meaning
Color Safety persons environment Condition process State equipment
• Red Danger Emergency Faulty
• Yellow Warning/caution Abnormal Abnormal
• Green Safe Normal Normal
• Blue Mandatory significance
• white, grey, black specific meaning assigned
Non-illuminated Actuators
Emergency Actuators
EMERGENCY-STOP OFF actuators shall identified the
color RED
STOP OFF Actuators
WHITE, GREY and BLACK are the preferred colors for STOP /
OFF actuators, with the main preference being for BLACK.
RESET Actuators
RESET Actuators (used, for example, with protective relays) shall
be BLUE, WHITE, GREY BLACK, except RESET actuators
which also act STOP OFF actuators
