2TLC172178M0201, rev. D
11
www.abb.com/lowvoltage
2011-11-15
Positioning precautions
The following precautions must be considered when using more than one pair of Spot units.
In line
Examples of more than one pair of Spot units set up in a straight line.
Not allowed
Allowed
Allowed
Spot T
Spot R
Spot T
Spot R
Transmitter 1
Receiver 1
Transmitter 2
Receiver 2
Danger!
Spot T
Spot R
Transmitter 1
Receiver 2
Spot T
Spot R
Spot T
Spot R
Transmitter 1
Receiver 1
Transmitter 2
Receiver 2
Wall
Spot R
Spot T
Spot T
Spot R
Receiver 1
Transmitter 1
Transmitter 2
Receiver 2