855T-B24GL3
在产855T Control Tower Light Green/Red/Yellow
Allen-Bradley 855T modular stack light — green, red, yellow segments.
常见应用
Stack light (tower light / andon light) that mounts on top of a machine or panel. Green/red/yellow segments visible from across the factory floor. More visible than panel-mount indicators. Used for machine status, production rate, and quality alerts in lean manufacturing. The segments are modular — add/remove colors as needed.
规格参数
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Certifications
Third-party safety certifications. UL = required for US NEC installations. CE = EU compliance. CSA = Canadian standards.
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UL, CSA, CE
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Color
Button/actuator color. Green = start/go, Red = stop/emergency, Yellow = caution, Blue = reset (per IEC 60204-1).
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Green/Red/Yellow (modular)
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Mounting Type
How the button attaches to the panel. Panel mount is standard — installs through a cutout from the front.
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1/2 NPT pipe mount or direct panel
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Voltage
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24V AC/DC
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安装快速参考
Panel cutout: 22mm. Insert from the front, secure with mounting nut.
LED module: Check the voltage rating matches your supply (typically 24V DC or 230V AC). Connect to PLC digital output or relay contact for status indication.
Color meaning (IEC 60204-1): Green = normal/running. Red = fault/danger. Yellow = warning/caution. Blue = mandatory action. White = neutral/general.
尺寸
故障排除
Light is dim or flickering
Check supply voltage matches the LED module rating. Low voltage causes dimming. If voltage is correct, the LED module is failing — replace it. LED modules have finite life (typically 50K-100K hours).
Light doesn't turn on
Verify voltage at the terminals with a multimeter. Check the PLC output or relay driving the light. LED modules are polarity-sensitive on DC circuits — try reversing the leads.
快速规格
- Certifications
- UL, CSA, CE
- Color
- Green/Red/Yellow (modular)
- Mounting Type
- 1/2 NPT pipe mount or direct panel
- Voltage
- 24V AC/DC
用户评价
“Stack light (tower light / andon light) that mounts on top of a machine or panel. Green/red/yellow segments visible from across the factory floor. More visible than panel-mount indicators. Used for ma”