CHAPTER 7: SPECIAL FEATURES
2 KHZ INVERTER WEDLING POWER SUPPLY
7-2
990-057
CHAIN SCHEDULES FEATURE (Figure 7-2)
CHAIN SCHEDULES FEATURE
is used to sequentially advance from one weld schedule to another specified
weld schedule. When Chain Schedules Feature is turned
ON
, the Run Screen and Program Screen for each
weld schedule will have additional fields for both
STEP COUNT
and
NEXT
SCHEDULE
.
Step Count
and
Next Schedule
are used to chain weld schedules together.
STEP COUNT
is a weld counter which counts down to 0. Any number from 00001 to 99999 can be entered
as a Step Count. When the Step Count reaches zero, the weld schedule will change as specified by the
NEXT SCHEDULE
. If a weld process is not completed and/or the
WELD/NO WELD
Switch is set to
NO
WELD
, the Step Counter will not count down.
NEXT SCHEDULE
is the number of the Next Weld Schedule to be used when the Step Count reaches zero.
Any weld schedule number from 001 to 127 can be used and any number of weld schedules can be chained
together. Exceptions are as follows:
•
NEXT SCHEDULE=000
can only be used at the beginning of a chain.
•
NEXT SCHEDULE=Setting
this number to the same weld schedule currently being used prevents
chaining from occurring.
•
NEXT SCHEDULE=
causes the Power Supply to stop after the Step Count has reached zero and
issue a Standby Stop Command alarm.
•
Weld Function=Rollspot
can only be used as the last weld schedule in a chain.
There are three ways to implement the chaining feature:
•
Locally from the HF2 Power Supply panel.
•
Remote control using a chain schedule control box connected at the Power Supply Signals
Connector.
•
Remote control of all 127 weld schedules using a PLC. For inter-connection information, refer
to
Chapter 4, Control Signals, Remote Weld Schedule Selection Input.
Turning the Chain Schedules Feature ON
Figure 7-3 shows what a typical weld schedule
looks like in the Program State when the chaining
feature is turned on. To turn it on:
1
From the
MAIN MENU
screen, select
OPTIONS
.
2
Access the
OPTIONS 1
screen.
3
Set the chain schedules selection to
CHAIN
SCHEDULES FEATURE: ON.
4
Save the setting to return to the
Alphanumeric
RUN
screen.
Figure 7-3. Weld Schedule in PROGRAM
State -- CHAIN Feature Turned ON.
