EBARA EV-S20, Instruction Manual, Page: 97 / 113

P.78
6.2.3 COMMUNICATION Start/Stop
a) START
Input the "MP" start command from the comunication connector. The MP will start.
In the case of DIP SW A-8
⇒
OFF : “MP” rotation reaches 3000 min-1, “BP”
will start automatically.
In the case of DIP SW A-8
⇒
ON : “MP” rotation reaches 3000 min-1, input the
external “BP” start signal. BP will start.
The power is indicated on the display during pump operation. For other
status display indications, refer to Table 6.1.
[ NOTE ] The pump will not start when a WARNING/ALARM has been
generated. When a START signal is entered, "STARTFAIL" will
appear on the display.
b) STOP
Input the "MP" stop command from the comunication connector. The MP will stop.
*Please refer to the COMMUNICATION SPECIFICATIONS in detail.
6.3 Operation when momentarily power failure happens
The power failure means that power supply voltage become 15% or less than
specification (170V or less). Pump operation is continued when the supply
voltage is back to normal (more than 170V) within 1 second. Pump operation
is stopped when the momentarily power failure is continued more than 1
second. Then control function is reset to original. (Additional new alarm/trip
by to the momentarily power failure is not displayed in the LCD controller).
There is a capacitor array in the control panel that will support the pump
electronics through a power failure up to one (1) second in duration.
Charging this capacitor array requires five (5) minutes after the pump is
connected to line power. Following a momentary power failure, the capacitor
array may need up to five (5) minutes to recharge ("reset") before the pump
can ride through another one-second interruption in line power. There is no
operator action required following a momentary power failure; the pump will
recover automatically. In the momentarily power failure condition, pump rotor
is driven by inertia due to interception of power supply. Thus, pumping
performance may be decreased than guaranteed specification.
PM10U
EBARA
CORPORATION