DESCRIPTION OF OPERATION
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© ESAB AB 2017
26AP2 Motor drive
The motor drive board comprises power components the motor drive. Control signals are
supplied by the processor on the control board, 26AP1.
26AP2:1 Power supply
The motor drive board is supplied with power from the welding power source. The 42 VAC is
rectified by BR1 and supplied to CN5:1 and CN5:5.
On the board it generates a 24V ±1 V and this voltage is used internally on the board and is
also supplied to 26AP1.
The motor control board, 26AP1, supplies +15 V, -15 V and +5 V to the motor drive board,
26AP2.