IDEC FS1A Controller - Manual (Page 246)

LOGIC
5-198
Logic 104: Partial stop logic applicable for selection of active safety input
devices
Overview (Logic 104)
For production machines, robots, and the like, a hazard is generally isolated by a protective door
(guard), however, when performing teaching or maintenance, the machine is operated in the
condition that a person is in the danger zone. For such a situation, this logic described is applicable
to the mode selection between Teach mode (maintenance mode) and Auto mode (operating mode).
Safety outputs perform as single channel outputs.
This logic enables the connection of 3 dual channel direct opening inputs, 1 mode select input, and 1
dual channel dependent input.
Safety
output 3
Auto mode Teach mode
Safety input 1
Safety input 2
Safety input 3
Safety output 1
Safety input 4
Safety input 5
Safety output 2
System runs
System runs
System
runs
C
Logic 104
Emergency
stop switch
Safety switch
Enabling switch
Selector switch
Safety
output 1-1
Safety
output 2
Safety
output 1-2
Safety
output 3
Operation example (Logic 104)
●Auto mode
Open!
Safety
output 3
Auto mode Teach mode
Safety input 1
Safety input 2
Safety input 3
Safety output 1
Safety input 4
Safety input 5
Safety output 2
Inactive
System runs
System runs
System
stops
Open!
System stops
System
stops
Safety
output 3
Auto mode Teach mode
Safety input 1
Safety input 2
Safety input 3
Safety output 1
Safety input 4
Safety input 5
Safety output 2
System runs
Inactive
●Teach mode
Open!
Position 2!
Safety
output 3
Auto mode Teach mode
Safety input 1
Safety input 2
Safety input 3
Safety output 1
Safety input 4
Safety input 5
Safety output 2
Inactive
System runs
System
stops
System runs
Position1!
Position3!
Safety
output 3
Auto mode Teach mode
Safety input 1
Safety input 2
Safety input 3
Safety output 1
Safety input 4
Safety input 5
Safety output 2
System
stops
System stops
System runs
Inactive