5 SERIES CONTROLLER
This is a very old control
which does not have a CRT. Data input is accomplished by scrolling across the
LED display with the Address buttons until you are beneath the appropriate code
(M, S, T, X, Y, Z, etc.) Once you are under the code letter, use the keypad to
enter the desired value and press the Input button.
To check for an Alarm,
scroll to ALM. If an alarm is present the corresponding LED will be lit in the
Alarm window (OH, OT, etc.) The OT indicates an over travel condition.
With a 5TC control, the power supply for both axes is mounted on the X axis
servo amplifier. These amplifiers are DC Servo Units. To see if the power
supply is operating properly, check the test points on either unit. Pin 17
should be -15vdc, Pin 16 should be +15vdc, Pin 15 should be +24vdc. All
measurements are referenced to Pin 14, 0vdc.
The incoming AC is supplied
to the rear of the servo. The MCC contactor is also located here. MCC has a
different meaning on the older controls. On the newer controls, MCC is one
large contactor which supplies power to all of the servo amps and the spindle
amp whenever the control is in a ready state. On this control, each axis and
the spindle controller are equipped with their own MCC which may or may not be
energized at the same time depending on the state of the NC. Terminals 1 and 2
on the Servo Unit should be about 170-210 VAC while terminals 3 and 4 should be
around 100 VAC.
In order to change
parameters on the Series 5 you must place the PRM/NOR toggle switch in the PRM
position.
The parameters on a Series
5 are easily scrambled. Look for the software version on the upper IC's on the
CPU board. The software is typically numbered 130,135,153,etc.
The Velocity Control Units
(Servos) have a toggle switch to select either 50 or 60 hertz operation.
When the control is
operating normally, you should be able to observe the following at power up.
1. Power comes on; after
about two seconds the servos are sent the position ready signal (PRDY) 24vdc.
2. Once the servos are
ready they send the signal to the NC. You should hear the MCC's energize and
stay
energized. If they energize and then drop back out there is a problem with one
of the servos.
A problem with one servo
will disable the PRDY causing the other MCC's to drop out. You can isolate this
condition by removing the fuses on the rear of the servo. In most cases these
will be 15 amp fuses. The NC is not aware if these fuses are present or not so
removing them will prevent the servo from sending a fault signal thereby
allowing the control to come up. Even if the fuses are removed while the NC is
in a ready state it will remain in a ready state. These fuses may be purchased
from Fanuc USA for about $6.00. The part number for the 15 amp fuses is
PL4150/SFAB250/402G. Also, these fuses have a contact which close when the fuse
is blown. Closing of this contact will prevent the control from coming up but will
not generate an alarm. Even momentary closure of this contact will cause both
servos to drop out and stay out.
This is very important! If
you have a machine that will not come up but the ALARM LED is off as well as
the READY LED you almost certainly have either a servo problem or an E-Stop
condition.(E-Stop button, Over Travel, etc.) When you have a true servo fault,
the ALARM LED will be on and there will be a 1 under SV in the
diagnostics.
The Series 5 control has
the capability of storing just one program in battery backed RAM, but it can be
a long one ( 10 or 20 meters). This RAM board was an option that most controls
were ordered without. If it is present on a control it can be recognized as a
board riding "piggy-back" on one of the two main boards.
A Series 5 control has no
RS-232 ability, but there are aftermarket devices which will interface with the
Tape Reader. The tape readers Baud Rate is 300.
To return to G Code
programming from Conversational programming, press the soft key at the far left
of the screen several times. When in graphics, press the PRGRM key on the
keypad then use the soft key. Most Spindle functions are controlled by the MTB.
They are controlled by affecting the values of the 6000 series parameters and
by setting Diagnostic bits.
On a Mazak with a 5M
control, if the control skips M Codes or does not execute them properly try
replacing one of the I/O modules particularly the M-FIN module.
