Tension Electronics PFEA113, User Manual
Chapter 1 Introduction
1-4 3BSE029382R0101 Rev C
1.6 Safety Instructions
Read and follow the safety instructions given in this section before starting any work. However, 
local statutory regulations, if stricter, are to take precedence.
The tension measurement system contains no moving parts. However, the load cells are 
mounted close to a rotating roll over which a web is running. 
1.6.1 Personnel Safety
WARNING
Never work with the load cells, or nearby, when the production line is in service. 
Before starting any work, switch off and lock the operating switch of the drive 
section for the measuring roll. 
DANGER
Switch off and lock the mains operating switch to the tension electronics before 
performing any work on the tension electronics. When the work is completed, 
check that there are no loose wires, and that all units are properly secured.
NOTE
All personnel working with the installation must know the location of the main 
power supply switch to the measurement system and how it is operated.
1.6.2 Equipment Safety
CAUTION
Always switch off the mains supply voltage to the measurement system before 
replacing a unit.
CAUTION
Handle the electronic unit carefully to reduce the risk of damage from 
Electric Static Discharge (ESD). Note the warning label on the circuit boards.