1139300
Shadow 8 User Manual
1-10
Introduction
The Machine Run/Stop LED flashes red and the Blanking Active LED flashes amber at the
same time whenever the number of beams the user is attempting to program in a fixed
blanking window prevents the required number of consecutive beams from remaining
unobstructed (see Table 3-1, page 3-6).
The Power LED on the optional Shadow 8 control, which is green, is illuminated when power
is being applied to the unit. Illumination of the two green LEDs labelled “OSSD 1” and
“OSSD 2” indicates that the safety relays are energized (i.e., closed). When the safety relays
are de-energized (i.e., open), these two LEDs turn off.
Shadow 8 Operating States
Shadow 8 can be in one of five operating states:
•
Curtains Unobstructed–The Machine Run/Stop LED is illuminated green, and the two
safety relays are “closed” (i.e., energized).
•
Curtains Obstructed–The Machine Run/Stop LED is illuminated red, and the two safety
relays are “open” (de-energized).
•
Interlock (Start/Restart Interlock operating mode–see Shadow 8 Operating Modes, below)–
The Machine Run/Stop LED is illuminated red, the yellow Interlock/Alarm LED is lit, and
the two safety relays are “open.” The Interlock state can only be cleared by removing the
obstruction that tripped the light curtain and turning the Program/Run/Start key switch (see
Figure 1-3, page 1-5) to the START position.
•
Alarm–The Machine Run/Stop LED is illuminated red, the yellow Interlock/Alarm LED is
flashing, and the two safety relays are “open.” The Alarm state can only be cleared by
fixing the problem that caused the alarm, recycling power to Shadow 8 or turning the
Program/Run/Start key switch to the START position, and waiting for the system to run a
self-test.
•
Blanking Object Removed–The amber Blanking Active LED is lit, the Machine Run/Stop
LED is illuminated red, and the two safety relays are “open.” To clear this state, replace the
object in its original position, which is defined by a consecutive string of illuminated IBIs,
or program a new blanking window with a different object or no object.
Shadow 8 Operating Modes
You can set Shadow 8 to operate in either Automatic Start or Start/Restart Interlock mode.
In Automatic Start mode, Shadow 8 powers up in the Curtains Unobstructed state. When an
object is detected in the sensing field, Shadow 8 changes from Curtains Unobstructed to
Curtains Obstructed. After the object has been cleared, Shadow 8 automatically switches to
the Curtains Unobstructed state.
In Start/Restart Interlock mode, Shadow 8 powers up in the Interlock state. To switch to
Curtains Unobstructed, the operator must turn the Program/Run/Start key switch to START.
When an object is detected in the sensing field, Shadow 8 changes from Curtains
Unobstructed to Interlock. After the object has been cleared, Shadow 8 remains in the
Содержание Shadow 8
Страница 95: ...1139300 Shadow 8 User Manual 3 10 Operation ...
Страница 107: ...1139300 Shadow 8 User Manual 4 12 Troubleshooting ...
Страница 111: ...1139300 Shadow 8 User Manual B 2 Checkout Procedure Log ...
Страница 113: ...1139300 Shadow 8 User Manual C 2 Test Procedure Log ...
Страница 135: ...1139300 Shadow 8 User Manual D 22 Extracts from OSHA and ANSI ...
Страница 136: ...Shadow 8 User Manual 1139300 Extracts from OSHA and ANSI D 23 ...
Страница 137: ...1139300 Shadow 8 User Manual D 24 Extracts from OSHA and ANSI ...
Страница 143: ...1139300 Shadow 8 User Manual I 4 Index ...
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