Powering Off; Starting The Stp Pump After A Safety Function Operates; Table 7.2 Reset Operation During Remote Operation (I/O Tb2) - Edwards STP-L301 Series Instruction Manual

STP-L301/L451 Series Instruction Manual
7.5.3 Starting the STP Pump after Stopping
Perform the rotation procedures to reaccelerate the STP pump. See Section 7.5.2,
"Starting/Stopping the STP Pump".
The STP pump can be reaccelerated even while it is stopping.
◇ The STP pump can be reaccelerated by remote operation with any message
displayed on the LCD.
7.5.4

Powering OFF

Switch "OFF" the breaker on the rear panel when all three LEDs of "ACCEL.", "NORMAL",
and "BRAKE" are off.
The magnetic bearing stops, the rotor lands, and the "POWER" LED extinguishes (POWER
OFF state).
◇ NEVER switch OFF the breaker when any LED of "ACCEL.", "NORMAL", and
"BRAKE" is on. Doing so causes such a state as a power failure.
7.5.5

Starting the STP Pump after a Safety Function Operates

A safety function operates when an abnormality occurs in the STP pump or peripheral
equipment. To restart the STP pump, remove the cause of the abnormality after the
"BRAKE" LED extinguishes, and perform either operation shown in Table 7.2. The
"FAILURE" LED extinguishes and the safety function is released (RESET operation). Then,
start the STP pump.
For the safety functions and troubleshooting, see Section 10, "Safety Functions " and Section
11, "Troubleshooting, Maintenance and Inspection".

Table 7.2 Reset Operation during Remote Operation (I/O TB2)

Method
1 With the circuit between (2)-(3) shorted, short the circuit between (6)-(1)
(terminals for reset signal) for 0.3 seconds or more.
2 Input 25 Vac or 12 to 48 Vdc between (6)-(3) (terminals for reset signal) for
0.3 seconds or more.
With DC, the (+) side can be connected to either (3) or (6).
◇ When using method 2 shown in the above table, 25 to 250 Vac can be input. In this
case, attach a metallic cover or a similar part to the terminal block to ensure the
safety.
Reset Operation
7-6