Miyachi Unitek ISA Series, Operator'S Manual

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APPENDIX I: FORCE CONTROL OPTION
ISA-4001CR INVERTER POWER SUPPLY
990-364 I-3
Select Back Pressure
Back Pressure is the pressure that is sent by the Electronic Pressure Regulator to the bottom of a weld
head’s air cylinder when a schedule is not operating.
NOTE:
The psi setting for this parameter will only be accurate if the electronic pressure regulator has
the association of 0-10 VDC = 0-100 psi.
1. From the
PRESSURE
REGULATOR
screen, select
BACK PRESSURE
.
2. Use the + or keys to increase
or decrease the pressure in psi.
3. Press
ENTER
.
PRESSURE REGULATOR
FORCE ON
FORCE UNITS lbs
BACK PRESSURE 00 psi
---------------------------------CALIBRATION-------------------------------------
VALVE:
1
LOW: 00000 UP HIGH: 00001 UP
Calibration
Calibration is a simple 2-step procedure using controls on the Program Unit that adjusts the ISA
electronic display so the actual force of the electrodes measured by the Force Gauge matches the
force displayed on the LCD. One
LOW
-force and one
HIGH
-force measurement are used for
calibration. If you are unable to match these measurements, return the Control to Miyachi Unitek for
factory calibration.
Before you start Calibration, check the force gauge to be used between the electrodes to see what force
units it measures. The
FORCE UNITS
on the Power Supply
must
match those on the Force Gauge (
lb
=
lb,
kgf
= kgf,
N
=Newton.) or calibration will not be accurate.
1.
From the
MENU
screen, select
PRESSURE REGULATOR
.
[MENU]
POWER SUPPLY STATE COPY SETUP DATA
SCHEDULE MODE SELECT
MONITOR STEPPER COUNT
MONITOR SET HEAT INCREASE
PRESSURE REGULATOR
RESET TO DEFAULTS
2. From the
PRESSURE
REGULATOR
screen, highlight
VALVE
.
4. Use the + or keys on the
Program Unit to select the valve
number to calibrate.
3. Press
ENTER
.
PRESSURE REGULATOR
FORCE ON
FORCE UNITS lbs
BACK PRESSURE 00 psi
---------------------------------CALIBRATION-------------------------------------
VALVE:
1
LOW: 00000 UP HIGH: 00001 UP