BF-1 Omron, BF-1 Datasheet - Page 27

• Manufacturer Part Number: BF-1
• Description: ELECTRODE HOLDER
• Manufacturer: Omron

Specifications of BF-1

• Description/function: General and industrial use electrode holder
• Equipment Type: Electrode Holder
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

61F-GjP
Connections
61F-G1P
Application 1: Automatic Water Supply Control with Pump Idling Prevention
Note: Be sure to ground terminal 15.
Water tank
Short-
age
B
E
1
’
E
L
2
’
E
3
MCCB
’
200-VAC power supply
THR
R S T
Pump
OFF
Pump
ON
Water
supply
Electromagnetic
switch
M
P
P
Water supply
source
A
*
61F-G1P
E
1
PS-3S
E
2
E
3
E
3
8
Transformer
E
200 V
0 V
7
2
’
E
1
9
’
Water supply
source
14
Alarm
15
U
24 V
24 V
2
B
8 V
6
Control
circuit
Control
circuit
10
5
U
Water tank
U
U
1
2
12
2
1
•
•
•
U
11
The pump stops when the water level reaches E1 and the pump
starts when the water level in the tank drops below E2.
When the level of water supply source drops below E2’, the
pump stops. Pumping idling is prevented and the alarm sounds.
Insert a pushbutton switch (NO contact) between 11 and 15 as
shown by the dotted line below. When starting the pump and
after recovering from a power failure, if the water supply source
level has not yet reached E1’, press the pushbutton switch to
start the pump by momentarily short-circuiting E1’ and E3. When
the pump stops during normal operation subsequent to an alarm
issued for a low water level, do not press the pushbutton switch.
U
1
4
1
2
E
3
3
E
2
E
1
Pushbutton switch
PS-3S
61F-GjP