Bosch Rexroth PRC 7000 Betriebsanleitung Seite 279

R911172834 / 02 | PRC7000
Do not use any magnetizable metal parts for fastening the current
"
sensor but rather copper or brass.
" Make sure that the current conductor is routed through the middle of
the sensor in the straightest line possible. The voltage induced in the
sensor (and thus the measured quantity) reaches its maximum if the
conductor runs vertically to the sensor level.
" If the sensor is used on mobile equipment, such as robots, certain
parts of the cable are subject to strong mechanical stress (e.g.
trailing cable).
In these cases, therefore, you should use suitable cables and design
the construction of the connecting lines so as to ensure a quick, trou­
ble-free replacement in the event of a fault.
" The cable shield should only be connected to the weld timer!
Make sure that the timer's complete control loop is readjusted in re­
"
gular intervals in order to avoid measuring errors (current calibra­
tion). An external reference welding ammeter is required for this
purpose.
Bosch Rexroth AG 279 / 334
Assembly