Pump Speed Control Mode - EBARA EV-SA20 Instruction Manual

P.44

5.3 Pump speed control mode

The following is the pump operating procedures in "PUMP SPEED CONTROL MODE".
1) Select "REMOTE MODE". (See section 5.2)
2) Enable "PUMP SPEED CONTROL MODE" with closing Pin 4-12 of the control connector.
(See table 3.3)
3) Apply voltage (DC 0-10V) to Pin 7-15 of the control connector. (See table 3.3)
4) Run the pump with closing Pin 1-9 of the control connector. (See table 3.3)
5) The pump will start and the pump rotor will rotate at a rotational speed corresponding to the
applied voltage.
Fig.5.2 shows the relation between the applied voltage and the pump rotation speed.
Fig.5.3 shows the time chart of pump speed control.
Rated speed
0.1 x Rated speed
0
0 1
Fig. 5.2 Applied voltage
[NOTE] "PUMP SPEED CONTROL MODE" is a feature available only in "REMOTE MODE".
[NOTE] The pump rotation speed is directly proportional to the applied voltage between Pin 7-15.
[NOTE]If the applied voltage is less than 1V, the pump rotation speed maintain "0.1 x rated speed".
[NOTE] The pump rotation speed can be changed even during the pump operation.
[NOTE] If you disable "PUMP SPEED CONTROL MODE" during the pump operation,
[NOTE] The pump will not start when an ALARM has been generated.
[NOTE] The control mode (REMOTE / LOCAL) can not be selected during RUN lamp is ON.
Do not apply voltage more than 10V. There is possibility that the pump to break down.
PM10U
10
Voltage [V]
– Pump rotation speed
the pump rotation speed will be changed to the rated speed.
CAUTION
Rated
-1
6000min
speed
0.1 x Rated speed
-1
600min
Rotation Speed
0min -1
10V
Input Voltage
1V
0V
ON
Speed Control
OFF
ON
Run Signal
OFF
Fig. 5.3 Time chart
EBARA
CORPORATION