Edwards SCU-350 Series

SCU-350 Series Control Unit for Turbomolecular Pump
MT-21E-201-E
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INSTALLATION
Item Description Function
1 START switch (Non-locking push-button, green)
STP pump rotating function (Valid in MANUAL only)
Rated speed setting function (Valid in MANUAL and REMOTE)
2 STOP switch (Non-locking push-button, red. Valid in MANUAL only)
Stops the STP pump
3 RESET switch (Non-locking push-button, white. Valid in MANUAL only)
Alarm reset function
Tuning function
4 MANUAL/REMOTE
changeover switch
(Slide switch, white)
Manual/Remote mode changeover
5 SELECT switch (Non-locking push-button, white. Valid in MANUAL and
REMOTE)
LCD display function
Error record display change over function
6 LCD panel Displays the STP pump’s operational status, speed, error
messages, and other
7 ACCEL. LED (Green LED) Illuminates during STP pump acceleration
(ACCELERATION state)
8 NORMAL LED (Green LED) Illuminates during STP pump rated speed
operational (NORMAL OPERATION state)
9 BRAKE LED (Yellow LED) Illuminates during STP pump deceleration
(BRAKE state)
10 POWER LED (Green LED)
Illuminates when power is on
Extinguishes when backup power is being supplied
11 FAILURE LED (Red LED) Illuminates when an abnormality/error occurs on the
STP pump or SCU-350. LCD panel simultaneously displays an
error message.
12 REMOTE LED (Green LED) Illuminates when in the REMOTE mode
Table 2 - SCU-350 front panel functions