Amada 1-288-01, Operation Manual, Page: 111 / 144

HF28 DC RESISTANCE WELDING SYSTEM
990-372 C-1
APPENDIX C
Calibration
Section I. Calibrating the Control
Overview
The Control is calibrated by the software, using inputs from a calibration setup during a weld process.
Following a few calibration inputs, the Control will adjust itself and store the calibration values in RAM,
where they will be used as standards for the operational welding parameters.
CAUTION: Only authorized personnel should perform this procedure.
Calibration Equipment Required
The required equipment for the setup is as follows:

2 weld cables, No. 2/0, 1 ft (30 cm) long, PN 2/0 BB11

1000 μΩ coaxial shunt resistor accurate to ±0.2%.
Source for shunt resistor: Model R7500-8
T & M Research Products, Inc.
139 Rhode Island Street NE
Albuquerque, NM 87108
Telephone: (505) 268-0316

Shielded voltage sense cable, PN 4-32998-01

Digital oscilloscope, Tektronix 724C or equivalent

Male BNC to dual binding post

2-wire, normally open switch for weld initiation, mating connector PN 520-011

Coaxial BNC-to-BNC cable