APPENDIX A: TECHNICAL SPECIFICATIONS
875DP/500DP/500HV DUAL PULSE
RESISTANCE WELDING POWER SUPPLIES
990-290
A-7
Weld Schedules
You can save (write) 16 different weld schedules in EEPROM (Electrically Erasable Programmable Read-
Only Memory.) In this manual, EEPROM is referred to as
permanent memory
. Weld schedules are
numbered 0 through 15.
Weld Schedule Definition
A weld schedule is defined as the following information:
a Schedule number (0 - 15)
f Energy of Pulse 1 and Pulse 2
b Weld Function
g Cool Time (Rollspot Function)
c Pulse Width
h Off Time (Repeat Function)
d Next Schedule
i Status of Relay 1
e Step Count
j Status of Relay 2
Weld Schedules 1 through 15 can be protected from unauthorized or inadvertent changes by Unitek
Peco’s System Security Feature. When the System Security is Protected, Schedule 0 is the only
schedule which can be modified.
NOTE:
If the security code is lost: Select SYSTEM SECURITY from the main menu. Switch the
WELD SWITCH to NO WELD, press [SAVE] and then press
[
• •
].
The status will change to
UNPROTECTED.
Options
You can change the following options from the main menu:
a Units of Measure for Energy
f Weld Head Type
b Schedule Number at Power-Up
g Footswitch Type
c End of Cycle Buzzer ON/OFF
h Footswitch Weld Abort ON/OFF
d Chain Schedule ON/OFF
i Firing Switch Type
e Squeeze Time
j Switch Debounce Time
k Hold Time