Ransburg Serial Atomizer Module A11925-00 - Manual (Page 14)

LN-9256-07.4
Serial Atomizer Module - Operation
1 1 1 1 1 1 1 1 1 1
AUT AUT AUT AUT AUTOMA OMA OMA OMA OMATIC SHUTDOWN TIC SHUTDOWN TIC SHUTDOWN TIC SHUTDOWN TIC SHUTDOWN
The Serial Atomizer Module provides a number of
modes of automatic shutdown in case of possible
unsafe or abnormal conditions. These are:
1. Overspeed: Overspeed: Overspeed: Overspeed: Overspeed: If the speed feedback exceeds
the speed setpoint:
Liquid Bell - 10,000 rpm above setpoint
Disk - any speed over 30 krpm
Time delay is 0.5 seconds
2. Underspeed: Underspeed: Underspeed: Underspeed: Underspeed: If the speed feedback is less
than the speed setpoint:
Liquid Bell - 10,000 rpm under setpoint
Disk - No underspeed checks made
Time delay is 0.5 seconds.
3. Loss of Feedback: Loss of Feedback: Loss of Feedback: Loss of Feedback: Loss of Feedback: Senses when feedback
should be present but is not:
Pulses received from the fiber optics must be no
greater than 800 msec apart during normal
operation.
Start-up delay:
Liquid Bell - 1 second for the first pulse
Disk - 7 seconds
Once the first pulse has been received, the 800
msec interval applies.
4. Invalid Speed Command: Invalid Speed Command: Invalid Speed Command: Invalid Speed Command: Invalid Speed Command: Will not process
speed requests higher than rated maximum.
Internally set speed command to zero.
5. Low Bearing Air Pressure: Low Bearing Air Pressure: Low Bearing Air Pressure: Low Bearing Air Pressure: Low Bearing Air Pressure: If the bearing air
pressure feedback drops below the threshold set
by dipswitch SW2, positions 7 and 8. There is a
4 second time delay for all settings.
The status of these conditions are available via the
Node Adapter or may be displayed locally on the
Serial Atomizer Module display as described in
"Troubleshooting" in the "Maintenance" section.
Restart After Automatic Shutdown Restart After Automatic Shutdown Restart After Automatic Shutdown Restart After Automatic Shutdown Restart After Automatic Shutdown
Restart is accomplished by requesting a different
speed. If the same speed is desired, set the speed
to zero and then back to the same speed. If the
Discrete I/O Module is used for communication,
restart can also be accomplished by setting the
Bell Spin Enable signal to "Off" and back to "On".
OTHER MODES OTHER MODES OTHER MODES OTHER MODES OTHER MODES
Bell Run Bell Run Bell Run Bell Run Bell Run
Normal operational mode, drive air is being supplied
to the atomizer. Active when DRIVE LED is On.
Out of T Out of T Out of T Out of T Out of Tolerance olerance olerance olerance olerance
Speed is not within +/- 5% of setpoint, no action
take, 1 second delay.
SIGNAL I/O SIGNAL I/O SIGNAL I/O SIGNAL I/O SIGNAL I/O
The input signal is Speed Request. Outputs are
Speed Feedback, Drive Air Pressure Feedback,
and Drive Status.
The Serial Atomizer Module communicates via
serial bus. The module has software built in to
recognize the unlikely loss of communication from
the adapter and shut down the modules outputs.
An internal timer viewing the serial bus traffic
accomplishes this.
All communication to the Serial Atomizer Module
is by serial bus from the Discrete I/O Module or
Serial Node Adapter. (See the most current
MicroPak User Manual for discrete wiring con-
nections for Discrete I/O or PLC addressing for
Node Adapter.)