STACIS
2100 Piezoelectric Isolation System - Installation & Operation Manual
P/N 96-28765-01
Page 20 of 43
During
the power-up self test
, isolation, alarms and some control functions are disabled. A test is run
for each axis sequentially. The gain and phase of each channel is measured at a single frequency, to
confirm proper actuator and sensor function. The difference between the measured value and a
reference value is displayed on the LCD as:
@ 5 H z 1 Z a x i s :
d G = 2 . 5 d B d P = 5 º
The values for the last axis checked are displayed until the measurement for the next axis is completed.
After completion of all tests, the LED will turn green, and the LCD will display either:
S T A C I S 2 1 0 0
p n 9 5 - 2 8 7 5 6 - 0 1 R e v #
If the gain and phase of each axis are within the default
values. This screen is called the “title screen”.
3 Y a x i s N o t O p t i m i z
d G = - 7 0 . 5 d B d P = - 4 5 º
Message similar to the one at left if one or more
values are detected to be out of optimal range of the
reference
value
during
the
gain/phase
measurements; only the last axis detected to be out
of range will remain on the display. This is called a
“not optimized” message.
Not Optimized Message During POST
Possible situations which may cause this malfunction include:
1. Installations with excessive floor noise level - vibration sensors saturate
due to the combination of high sensor gains and running of the self-test
with servo feedback loop OFF i.e. “open loop”.
To verify if this is the case, connect an oscilloscope to the BNC
connector “ANALOG OUTPUT” on the controller’s front panel and then
monitor vibration sensors’ readings during the pre-operational self-test
(POST) [restart the POST by switching the Controller OFF and then ON]
to determine if the signal is “clipping” at +10 V or -10 . If signal clipping is
happening, the pre-operational self-test should be disabled; use menu
option
Set Powerup Test
(see
Description of Menu Tree Functions
section).
2. HVAs are not properly connected to the isolators.
3. Cables are not properly connected.
4. System is simply not functioning correctly. If this is the case, contact
TMC Service.
Report all “Not Optimized” messages to TMC.
