Banner SC22-3E Safety Controller with Ethernet - Manual (Page 121)

For example, in an entry/exit application where a pallet initiates the mute cycle by entering a cell, if both the entry and the exit PSSDs are
muted, it may be possible for an individual to access the guarded area through the “exit” of the cell. An appropriate solution would be to
mute the entry and the exit with separate safeguarding devices.
WARNING: . . . Guarding Multiple Areas
DO NOT safeguard multiple areas, with mirrors or multiple sensing fields, if personnel can enter the hazardous area
while the System is muted, and not be detected by supplemental safeguarding that will issue a stop command to the
machine.
SC22-3/-3E Safety Controller Instruction Manual
P/N 133487 rev. C www.bannerengineering.com - tel: 763-544-3164 121