Installation Of The Stp Control Unit; Name And Function Of Each Part; Front Panel - Edwards STP-L301 Series Instruction Manual

6

Installation of the STP Control Unit

6.1

Name and Function of Each Part

6.1.1

Front Panel

(1) "START" Switch (momentary push button switch, green)
STP pump rotating function (valid in MANUAL operation only)
Press this switch to accelerate the STP pump when the LCD displays
"LEVITATION" or "BRAKE : ***00rpm" (***00rpm indicates the current rotational
speed).
The "ACCEL." LED illuminates simultaneously.
Rated speed setting function (valid in MANUAL or REMOTE operation)
Press this switch in the rated speed setting mode to fix the rated speed to the rpm
displayed in "SET : ***00rpm" (here, ***00rpm indicates the rated speed to be set).
For details, see Section 9.2, "Setting the Rated Speed".
(2) "STOP" Switch (momentary push button switch, red)
STP pump stop operation function (valid in MANUAL operation)
Press this switch to decelerate and stop the STP pump.
The "NORMAL" or "ACCEL." LED extinguishes and the "BRAKE" LED illuminates
simultaneously.
When the number of rotations is less than approximately 2,000 rpm while the STP
pump is accelerating, the "BRAKE" LED does not illuminate.
(3) "RESET" Switch (momentary push button switch, white)
Alarm reset function (valid in MANUAL operation only)
When a safety function operates with the "FAILURE" LED lit, stop the STP pump
and remove the cause of the failure. Then, press this switch to restart the STP pump.
The "FAILURE" LED extinguishes simultaneously.
Tuning function (valid in MANUAL or REMOTE operation)
To perform tuning, press and hold this switch for 3 seconds or more when the STP
pump is in the levitation state (See Section 9.1, "Tuning").
(4) "MANUAL/REMOTE" Changeover Switch (slide switch, gray)
Operation mode selection function
When this switch is set to the position opposite to "ON", the start and stop
operations using switches on the front panel are possible (valid in MANUAL
operation). In this mode, the REMOTE LED is off.
When this switch is set to "ON", the start and stop operations using remote signals
are possible (valid in REMOTE operation). In this mode, the REMOTE LED is on.
(5) "SELECT" Switch (momentary push button switch, white)
LCD massage change function (valid in MANUAL or REMOTE operation)
Press this switch to change the message on the LCD.
Error record display function (valid in MANUAL or REMOTE operation)
When this switch is kept pressed for 3 seconds or more when the LCD displays a
pump's operation state ("LEVITATION", "ACCEL." and other.) or the pump's
temperature, the LCD displays the operating hours (cumulative) or an error
message which occurred in the past (See Section 11, "Troubleshooting, Maintenance
and Inspection").
STP-L301/L451 Series Instruction Manual
6-1