454
TECHNICAL REFERENCE
June 1999
96-8000
12.8 CONTROL P ANEL
JOG H ANDLE
The JOG handle is actually a 100-line-per-revolution encoder. We use 100 steps per revolution to move one of
the servo axes. If no axis is selected for jogging, turning of the crank has no effect. When the axis being moved
reaches its travel limits, the handle inputs will be ignored in the direction that would exceed the travel limits.
Parameter 57 can be used to reverse the direction of operation of the handle.
POWER O N/OFF S WITCHES
The POWER ON switch engages the main contactor. The on switch applies power to the contactor coil and the
contactor thereafter maintains power to its coil. The POWER OFF switch interrupts power to the contactor coil
and will always turn power off. POWER ON is a normally open switch and POWER OFF is normally closed.
The maximum voltage on the POWER ON and POWER OFF switches is 24V AC and this voltage is present
any time the main circuit breaker is on.
SPINDLE L OAD M ETER
The Load meter measures the load on the spindle motor as a percentage of the rated continuous power of the
motor. There is a slight delay between a load and the actual reflection of the meter. The eighth A-to-D input also
provides a measure of the spindle load for cutter wear detection. The second page of diagnostic data will
display % of spindle load. The meter should agree with this display within 5%. The spindle drive display #7
should also agree with the load meter within 5%.
There are different types of spindle drive that are used in the control. They are all equivalent in performance but
are adjusted differently.
EMERGENCY S TOP S WITCH
The EMERGENCY STOP switch is normally closed. If the switch opens or is broken, power to the servos will
be removed instantly. This will also shut off the tool changer, spindle drive, and coolant pump. The EMER-
GENCY STOP switch will shut down motion even if the switch opens for as little 0.005 seconds.
Be careful of the fact that Parameter 57 contains a status switch that, if set, will cause the control to be
powered down when EMERGENCY STOP is pressed.
You should not normally stop a tool change with EMERGENCY STOP as this will leave the tool changer in an
abnormal position that takes special action to correct.
Note that tool changer alarms can be easily corrected by first correcting any mechanical problem, pressing
RESET until the alarms are clear, selecting ZERO RETURN mode, and selecting îš“AUTO ALL AXESîš”.
To Next Page
Loading...
Need help?
General
