ESAB LTR 160, Руководство по обслуживанию

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cltr0de2
8b Shunt input with shunt signal amplifier
Shunt input for the LTR 160 from serial number 842--xxx--xxxx and for the LTR 200
from serial number 842--902--xxxx
The shunt signal amplifier board AP10 is voltage supplied from circuit board AP01.
Resistor R16 adjusts the offset voltage of amplifier IC1. This resistor is adjusted
during manufacture of the circuit board, and should not subsequently be adjusted.
The signal amplification is set by fixed resistors and it is not adjustable.
The shunt voltage is 137 mV at maximal welding current, 160 respectively 200 A.
The voltage between the contacts B1 and B2 on circuit board AP01 must be 5.7 V
±
2% at maximal welding current.
Component positions, circuit board AP10