Page 1
Floatless Level Switch (Basic Type)
Refer to Safety Precautions for Floatless Level
Controllers.
12
61F-@@
61F-G@
Basic Building-block Controllers That Mount
Directly to Panels for Easier Maintenance
• Easy maintenance with building-block Relay Units.
• Easy identification of operating status with LED operation
indicator.
• Lineup includes models for tropical regions and for high
temperatures. Achieve stable detection even in hightemperature environments.
Model Number Structure
CSM_61F-G__DS_E_4_2
1. Control Application
G: Automatic water supply and drainage
G1: Automatic water supply with idling prevention or water
shortage alarm
G2: Automatic water supply and drainage with abnormal
water increase alarm
G3: Automatic water supply and drainage with full tank and
water shortage alarm
G4: Automatic water supply with water level indicator for
water supply tank and water receiving tank and
prevention of idling due to water shortage
I: Liquid level indication and alarm (no two-wire models)
2. Type
Blank: General-purpose
L 2KM: Long-distance (for 2 km)
L 4KM: Long-distance (for 4 km)
H: High-sensitivity
D: Low-sensitivity
R: Two-wire
T: High-temperature
Position of
LED indicator
1
Page 2
2
Ordering Information
Type Set contents General-purpose Long-distance, 2 km Long-distance, 4 km High-sensitivity
Model Model Model Model
Application G 61F-G Base x 1
Application G1 61F-G1 Base x 1
Application G2 61F-G2 Base x 1
Application G3 61F-G3 Base x 1
Application G4 61F-G4 Base x 1
Application I 61F-I Base x 1
Relay Unit 61F-11@ Units x 1 61F-11 61F-11L 2KM 61F-11L 4KM 61F-11H
Application
Application
Application
Application
Application
Application
Relay Unit
61F-11@ Units x 1
61F-11@ Units x 2
61F-11@ Units x 2
61F-11@ Units x 3
61F-11@ Units x 5
MK3P Relay x 1
61F-11@ Units x 2
Type Set contents Low-sensitivity 2-wire Tropical environments High-temperature
G 61F-G Base x 1
61F-11@ Units x 1
G1 61F-G1 Base x 1
61F-11@ Units x 2
G2 61F-G2 Base x 1
61F-11@ Units x 2
G3 61F-G3 Base x 1
61F-11@ Units x 3
G4 61F-G4 Base x 1
61F-11@ Units x 5
MK3P Relay x 1
I 61F-I Base x 1
61F-11@ Units x 2
61F-11@ Units x 1 61F-11D 61F-11R --- 61F-11T
61F-G 61F-GL 2KM 61F-GL 4KM 61F-GH
61F-G1 61F-G1L 2KM 61F-G1L 4KM 61F-G1H
61F-G2 61F-G2L 2KM 61F-G2L 4KM 61F-G2H
61F-G3 61F-G3L 2KM 61F-G3L 4KM 61F-G3H
61F-G4 61F-G4L 2KM 61F-G4L 4KM 61F-G4H
61F-I 61F-IL 2KM 61F-IL 4KM 61F-IH
Model Model Model Model
61F-GD 61F-GR 61F-G-TDL 61F-GT
61F-G1D 61F-G1R 61F-G1-TDL 61F-G1T
61F-G2D 61F-G2R 61F-G2-TDL 61F-G2T
61F-G3D 61F-G3R 61F-G3-TDL 61F-G3T
61F-G4D 61F-G4R 61F-G4-TDL 61F-G4T
61F-ID --- 61F-I-TDL 61F-IT
61F-G@
Note: 1. When ordering, specify the desired operating voltage at the end of the model number.
Example: 61F-G [110/220 VAC]
Desired supply voltage
2. If you order with a standard model number, the corresponding Relay Units are also delivered as part of a set.
If you order the 61F-G, one 61F-11 Relay Unit is included in the set.
Page 3
Specifications
• Advanced Operation
With advanced operation, the internal relay
operates as soon as control power is
supplied to the G1F and is reset when current
flows between the poles. Wiring is the same
as for models with sequential operation.
■ Standard Models
Specifications
61F-G@
Items General-purpose
Controlling materials
and operating conditions
Supply voltage 100, 110, 120, 200, 220 or 240 VAC; 50/60 Hz
Operating voltage range
InterElectrode voltage 8 VAC 24 VAC 8 VAC
InterElectrode current Approx. 1 mA AC max.
Power consumption 61F-G@: 3.5 VA max.; G1F-G1@, G1F-G2@, or G1F-I@: 5.5 VA max.; G1F-G3@: 7.5 VA max.; G1F-G4@: 14.5 VA max.
InterElectrode operate
resistance
InterElectrode release
resistance
Cable length
(see note 3)
Control output 2 A, 220 VAC (Inductive load: cosφ = 0.4)
Ambient temperature Operating: –10 to 55°C (–10 to 70°C for 61F-@T)
Ambient humidity Operating: 45% to 85% RH
Insulation resistance
(see note 4)
Dielectric strength
(see note 4)
Life expectancy Electrical: 500,000 operations min.
Weight 61F-G@: Approx. 380 g, G1F-G1@, G1F-G2@, or G1F-I@: Approx. 750 g;
Note: 1. The @ in the model name represents G, G1, G2, G3, G4, and I.
2. The suffix “TDL” attached to the model name represents models designed for tropical regions (storage humidity of 45% to 90%). For
details, refer to Safety Precautions for Floatless Level Controllers.
3. The length when using completely-insulated, 600-V, 3-conductor (0.75 mm
the cable diameter or number of conductors becomes larger. For details, refer to Safety Precautions for Floatless Level Controllers.
4. The insulation resistance and dielectric strength indicate values between power terminals and Electrode terminals, between power terminals and contact terminals, and between Electrode terminals and contact terminals.
5. Possible to use with 15 kΩ or less, however, this may cause reset failure.
6. High-sensitivity Controllers use advanced operation.
When the power supply voltage is applied, if there are some liquids between the electrodes (ground and operation electrodes), the internal relay will not operate.
When the power supply voltage is applied, if there are no liquids between the electrodes (ground and operation electrodes), the internal
relay will operate.
Controller
61F-@ (TDL)
(see note
1 and 2)
For control of ordinary purified water
or sewage water
85% to 110% of rated voltage
0 to approx. 4 kΩ 0 to approx. 5 kΩ 0 to approx.
Approx. 15 k to ∞Ω Approx. 15 k to ∞Ω4 k to ∞Ω (for
1 km max. 600 m max. 2 km max.
5 A, 220 VAC (Resistive load)
100 MΩ min. (at 500 VDC)
2000 VAC, 50/60 Hz for 1 min.
Mechanical: 5,000,000 operations min.
G1F-G4@: Approx. 1,710 g
High-
temperature
Controller
61F-@T
(see note 1)
For control of ordinary purified water
or sewage water
in cases where the
ambient temperature is high.
Long-distance
Controllers
61F-@L 2KM
(for 2 km)
61F-@L 4KM
(for 4 km)
(see note 1)
For control of ordinary purified water
in cases where the
distance between
sewage pumps
and water tanks or
between receiver
tanks and supply
tanks is long or
where remote
control is required.
1.8 kΩ (for 2 km)
0 to approx.
0.7 kΩ (for 4 km)
2km)
2.5 k to ∞Ω (for
4km)
4 km max.
High-sensitivity
Controllers
61F-@H
(see note 1)
For control of liquids with high
specific resistance such as distilled water
Approx. 15 kΩ to
70 kΩ
(see note 5)
Approx. 300 k to ∞ΩApprox. 5 k to ∞Ω Approx. 15 k to
50 m max. 1 km max. 800 m max.
2
) cabtire cables. Usable cable lengths will become shorter as
Low-sensitivity
Controller
61F-@D
(see note 1)
For control of liquids with low specific resistance
such as salt water,
sewage water,
acid chemicals, alkali chemicals
0 to approx.
1.8 kΩ
-G3@: Approx. 930 g;
G1F
Two-wire
Controller
61F-@R
(see note 1)
For control of ordinary purified water
or sewage water
used in combination with Two-wire
Electrode Holder
(incorporating a
resistor of 6.8 kΩ)
It is possible to wire
with less than one
wiring against general 61F’s wiring.
0 to approx. 1.1 kΩ
∞Ω
3
Page 4
61F-G@
4
61F-G
61F-GT 61F-GL
61F-GH
(See note.)
61F-GD 61F-GR
24 V
8 V
0 V
200, 220
or 240 V
100, 110
or 120 V
S
0 S1 S2 E3
Ta Tc Tb E1E2
U
U
U
61F-11
Relay Unit
24 V
8 V
0 V
200, 220
or 240 V
100, 110
or 120 V
S
0 S1 S2 E3
Ta Tc Tb E1E2
U
U
U
61F-11T
Relay Unit
24 V
8 V
0 V
200, 220
or 240 V
100, 110
or 120 V
S
0 S1 S2 E3
Ta Tc Tb E1E2
U
U
U
61F-11L
Relay Unit
24 V
24 V
0 V
200, 220
or 240 V
100, 110
or 120 V
S
0 S1 S2 E3
Ta Tc Tb E1E2
U
U
U
61F-11H
Relay Unit
24 V
8 V
0 V
200, 220
or 240 V
100, 110
or 120 V
S
0 S1 S2 E3
Ta Tc Tb E1E2
U
U
U
61F-11D
Relay Unit
24 V
8 V
0 V
200, 220
or 240 V
100, 110
or 120 V
S
0 S1 S2 E3
Ta Tc Tb E1
U
U
U
61F-11R
Relay Unit
Internal Circuit Diagrams
The schematic diagrams shown below typify the internal connections of the various 61F models. The designations Ta, Tb, and Tc (sometimes
referred to collectively as “U”) may occur more than once in a product, however, the “a” terminal is always an NO contact, a “b” terminal is an NC
contact, and the “c” terminal is the common terminal.
Page 5
61F-G@
61F-11
61F-11T 61F-11L
61F-11H
(see note)
61F-11D 61F-11R
X
7 6 58 4
39 1 210 11
ESS S
8 V 24 V 24 V
Tb
2 Ta 2 Tc2 Tc1 Ta 1 Tb1
x
x
X
7 6 58 4
39 1 210 11
ESS S
8 V 24 V 24 V
Tb
2 Ta 2 Tc2 Tc1 Ta 1 Tb1
x
x
X
7 6 58 4
39 1 210 11
ESS S
8 V 24 V 24 V
Tb
2 Ta 2 Tc2 Tc1 Ta 1 Tb1
x
x
X
7 6 58 4
39 1 210 11
ESS S
24 V 24 V 24 V
Ta
2 Tb2 Tc2 Tc1 Tb1 Ta 1
x
x
X
7 6 58 4
39 1 210 11
ESS S
8 V 24 V 24 V
Tb
2 Ta 2 Tc2 Tc1 Ta 1 Tb1
x
x
X
7 6 58 4
39 1 210 11
ESS S
8 V 24 V 24 V
Tb
2 Ta 2 Tc2 Tc1 Ta 1 Tb1
x
x
Tr
2
Tr 1
Tr 1 Tr 1
Tr 1
Tr 1
Tr 1
Tr 2
Tr 2
Tr 2
Tr 2
Tr 2
Tr 2
Note: The 61F11H relay deenergizes when there is water present across the Electrodes, whereas the 61F relay energizes when there is water
present across the Electrodes.
Also, the terminal connections of those Controllers provided with LED indicators differ from those which have no indicators.
61F-11 Relay Units
Item 61F-11 61F-11T 61F-11L 61F-11H 61F-11D 61F-11R
Interchangeable with
general-purpose model (61F-11)
Color of band on name
plate
--- Provided Provided Not provided Provided Not provided
--- Red Yellow Blue Black Green
5
Page 6
6
■ Connections
Basic Type
61F-G
Dimensions:
page 14
Automatic Water Supply and
Drainage Control
Contactor
Water supply
source
Water
tank
Motor
protection
relay
MCCB
RSMT
220-VAC power supply
61F-G
PS-3S
(See
note.)
Stop
T
a
T
c
T
b
E
2
E
1
S
0
S
1
S
2
E
3
E2
E3
E
1
P
Start
8 V
220 V
110 V
0V
U
U
U
24 V
61F-11
Relay Unit
Connections
Note: Be sure to ground the common Electrode (the longest Electrode).
• Connect Tb to the contactor’s coil terminal.
• Power Supply Connections (for models with 110/220-V power)
110 VAC: Connect S
0
and S1.
220 VAC: Connect S
0
and S2.
Contactor
Waste
water
tank
Reservoir
Motor
protection
relay
MCCB
RSMT
220-VAC Power supply
61F-G
PS-3S
(See note.)
T
a
T
c
T
b
E
2
E
1
S
0
S
1
S
2
E
3
E
2
E
3
P
8 V
220 V
110 V
0 V
U
U
U
24 V
61F-11
Relay Unit
Start
Stop
E
1
Note: Be sure to ground the common Electrode (the longest Electrode).
• Connect Ta to the contactor’s coil terminal. (Do not connect Tb.)
• Power Supply Connections (for models with 110/220-V power)
110 VAC: Connect S
0
and S1.
220 VAC: Connect S
0
and S2.
Connections
Principles of Operation
The pump stops (indicator ON) when the water level reaches E
1
and starts (indicator OFF) when the water level drops below E
2
.
Relay Unit Location
The pump starts (indicator ON) when the water level reaches E1
and stops (indicator OFF) when the water level drops below E
2
.
Relay Unit Location
Principles of Operation
Automatic Water Supply Control Automatic Drainage Control
61F-G@
Water
supply
P
Pump OFF
Pump ON
E1
E2
E3
(U indicator ON)
(U indicator OFF)
U
1
Power
supply
Pump ON
Pump OFF
Water tank
E1
E2
E3
(U indicator ON)
(U indicator OFF)
P
Water drainage
U
1
Power
supply
Page 7
61F-G@
Basic Type
61F-G1
Dimensions:
page 14
Automatic Water Supply Control with
Pump Idling Prevention and Automatic
Water Supply Control with Abnormal
Water Shortage Alarm
U1
U1
U2
U1
U2
U2
Contactor
Water
supply
source
Motor
protection
relay
MCCB
RSMT
220 VAC power supply
61F-G1
Water
tank
PS-3S
(See note.)
S
o
Tb1T
a1
Tc2T
b2
S1S2E3E2E1E2'E1'
E
2
E
3
PS-3S
E2'
E
3'
E
1'
P
61F-11
Relay Unit
8 V
220 V
110 V
0 V
24 V
24 V
61F-11
Relay Unit
(E4)
Alarm
B
Push
button
switch
Stop
Start
E
1
Note: Be sure to ground the common Electrode (the longest Electrode).
• Power Supply Connections
110 VAC: Connect S
0
and S1.
220 VAC: Connect S
0
and S2.
• Insert a pushbutton switch (NO) between E
1
' and E3, as shown by
the dotted lines above.
• Do not press the pushbutton if the low-water alarm sounds and
the pump stops during normal operation (U
1
indicator ON, water
below E
2
').
If the supply water level is below E
1
' when starting operation or
when recovering from a power interruption, press the pushbutton to
momentarily close the circuit (U
1
indicator turns ON) to start the
pump.
Test Operation/Recovering from Power Interruptions
Connections
U
1
U
1
U
2
U
1
U
2
U
2
Water supply
source
MCCB
RSMT
220 VAC power supply
61F-G1
Water
tank
PS-4S
(See note.)
S
o
Tb1T
a1
Tc2T
b2
S1S2E3E2E1E2'E1'
E
3
P
61F-11
Relay Unit
8 V
220 V
110 V
0 V
24 V
24 V
61F-11
Relay Unit
(E4)
Alarm
B
Push
button
switch
Stop
Start
Water
shortage
E
2
E
4
E
1
Contactor
Motor
protection
relay
Note: Be sure to ground the common Electrode (the longest Electrode).
• Power Supply Connections
110 VAC: Connect S
0
and S1.
220 VAC: Connect S
0
and S2.
• Insert a pushbutton switch (NO) between E
3
and E4.
• If the pump stops when the pushbutton switch is released, press
it again.
If the supply water level is below E
4
when starting operation or
when recovering from a power interruption, press the pushbutton
to momentarily close the circuit (U
1
indicator turns ON) to start the
pump.
Test Operation/Recovering from Power Interruptions
Connections
E1'
E
2
'
E
3
E
1
BL
E
2
E
3
P
Water tank
Water supply source
Water
supply
Water
shortage
(U1 indicator ON)
Pump OFF
Pump ON
(U
1
indicator OFF)
(U2 indicator ON)
(U
2
indicator OFF)
U1U
2
Power
supply
• The pump starts (U2 indicator OFF) when the water level drops below E2
and stops (U
2
indicator ON) when the water level reaches E1.
• When the level of the water supply source drops below E
2
', the pump
stops (U
1
indicator OFF). Pump idling is prevented and the alarm sounds.
Relay Unit Location
Principles of Operation
• The pump stops (U2 indicator ON) when the water level reaches E1 and
starts (U2 indicator OFF) when the water level drops below E2.
• If the water level drops below E
4
for any reason, the pump stops (U1
indicator OFF) and the alarm sounds.
Relay Unit Location
Principles of Operation
Automatic Water Supply Control with Pump Idling Prevention
Automatic Water Supply Control with Abnormal Water Shortage Alarm
Water
supply
P
Pump OFF
Pump ON
BL
Water
shortage
Water tank
E2
E4
E3
E1
(U2 indicator ON)
(U2 indicator OFF)
(U
1 indicator OFF)
U1U
2
Power
supply
7
Page 8
61F-G@
8
Basic Type
61F-G2
Dimensions:
page 14
Automatic Drainage Control and
Water Supply with Abnormal
Water Increase Alarm
U1
U2
U1
U2
U2
Contactor
Water supply
source
Water
tank
Motor
protection
relay
MCCB
RSMT
220 VAC power supply
61F-G2
S
o
T
c1
T
a1
Tb1Ta2T
c2
S1S2E3E2E1E
4
PS-4S
P
61F-11
Relay Unit
8 V
220 V
110 V
0 V
24 V
24 V
61F-11
Relay Unit
Alarm
B
(See note.)
Stop
Full
Start
E1
E2
E3
E4
Note: Be sure to ground the common Electrode (the longest Electrode).
• Connect Tb1 to the power supply.
• Power Supply Connections
110 VAC: Connect S
0
and S1.
220 VAC: Connect S
0
and S2.
Connections
U1
U2
U1
U2
U2
Contactor
Waste
water
tank
Motor
protection
relay
MCCB
RSMT
220 VAC power supply
61F-G2
Reservoir
S
o
T
c1
T
a1
Tb1Ta2T
c2
S1S2E3E2E1E
4
PS-4S
E
2
E3
E4
P
61F-11
Relay Unit
8 V
220 V
110 V
0 V
24 V
24 V
61F-11
Relay Unit
Alarm
B
(See note.)
Stop
Start
Full
E1
Note: Be sure to ground the common Electrode (the longest Electrode).
• Connect Ta1 to the power supply.
• Power Supply Connections
110 VAC: Connect S
0
and S1.
220 VAC: Connect S
0
and S2.
Connections
E
4
E
1
E
3
E
2
Water
supply
Upper
limit
(U1 indicator ON)
Pump OFF
Pump ON
(U
2
indicator ON)
(U2 indicator OFF)
P
BL
U1U
2
Power
supply
• The pump starts (U2 indicator OFF) when the water level
drops below E
2
and starts (U2 indicator ON) when the water
level reaches E
1
.
• If the water level reaches E
4
for any reason, the alarm sounds
(U
1
indicator ON).
Relay Unit Location
Principles of Operation
E
4
E
1
E
3
E
2
Water drainage
Upper
limit
(U
1
indicator ON)
Pump OFF
Pump ON
(U
2
indicator ON)
(U2 indicator OFF)
BL
P
U1U
2
Power
supply
• The pump starts (U2 indicator OFF) when the water level
reaches E
1
and stops (U2 indicator ON) when the water level
drops below E
2
.
• If the water level reaches E
4
for any reason, the alarm sounds
(U
1
indicator ON).
Relay Unit Location
Principles of Operation
Automatic Water Supply with Overfull Tank Alarm Automatic Drainage Control with Overfull Tank Alarm
Page 9
61F-G@
Basic Type
61F-G3
Dimensions:
page 14
Automatic Water Supply and Drainage
Control with Abnormal Water Increase and
Water Shortage Alarms
8 V
U
1
U
2
U
3
U
1
U
2
U3U1U
3
U
2
Contactor
Wate r
supply
source
Motor
protection
relay
MCCB
RSMT
220 VAC power supply
61F-G3
Water
tank
PS-5S
(See
note.)
TaTcTbB1B2LcE1E3E
5
S0S1S
2
LH LL
PLPLB
E
2E4
E
4
E
5
P
24 V
24 V
61F-11
Relay Unit
24 V
61F-11
Relay Unit
Alarm
Full tank
Upper
limit
Lower
limit
220 V
110 V
0 V
61F-11
Relay Unit
Water
shortage
E
3
Stop
Start
E
2
E
1
Note: Be sure to ground the common Electrode (the longest Electrode).
• Connect Tb to the contactor’s coil terminal.
• Power Supply Connections
110 VAC: Connect S
0
and S1.
220 VAC: Connect S
0
and S2.
Connections
8 V
U
1
U
2
U
3
U
1
U
2
U3U1U
3
U
2
Contactor
Waste
water
tank
Reservoir
Motor
protection
relay
MCCB
RSMT
220 VAC power supply
61F-G3
PS-5S
(See
note.)
TaTcTbB1B2LcE1E3E
5
S0S1S
2
LH LL
PLPLB
E
2E4
E
4
E
5
P
24 V
24 V
61F-11
Relay Unit
24 V
61F-11
Relay Unit
Alarm
Upper
limit
220 V
110 V
0 V
61F-11
Relay Unit
Lower
limit
Full tank
Water shortage
Start
Stop
E
3
E
2
E
1
Note: Be sure to ground the common Electrode (the longest Electrode).
• Connect Ta to the contactor’s coil terminal. (Do not connect
Tb.)
• Power Supply Connections
110 VAC: Connect S
0
and S1.
220 VAC: Connect S
0
and S2.
Connections
U1U2U
3
Power
supply
• The pump stops (U2 indicator ON) when the water level
reaches E
2
and starts (U2 indicator OFF) when the water level
drops below E
3
.
• If the water level rises to E
1
for any reason, the upper-limit
indicator turns ON and the alarm sounds (U
1
indicator ON).
If the water level drops below E
4
for any reason, the lower-limit
indicator turns ON and the alarm sounds (U
3
indicator OFF).
Relay Unit Locations
Principles of Operation
U1U2U
3
Power
supply
• The pump starts (U2 indicator ON) when the water level
reaches E
2
and stops (U2 indicator OFF) when the water level
drops below E
3
.
• If the water level rises to E
1
for any reason, the upper-limit
indicator turns ON and the alarm sounds (U
1
indicator ON).
If the water level drops below E
4
for any reason, the lower-limit
indicator turns ON and the alarm sounds (U
3
indicator OFF).
Relay Unit Locations
Principles of Operation
Automatic Water Supply with Abnormal Water Increase and Water Shortage Alarms Automatic Drainage Control with Abnormal Water Increase and Water Shortage Alarms
Water
supply
P
Pump OFF
Pump ON
E
E
4
E
5
Upper
limit
E
1
E
2
3
Lower
limit
B
L
H
(U1 indicator ON)
(U
2
indicator ON)
2
indicator OFF)
(U
(U3 indicator OFF)
L
L
B
Pump ON
Pump OFF
E2
E3
E4
E5
L
H
Upper
limit
E1
Lower
limit
B
(U
1
indicator ON)
(U
2
indicator ON)
(U2 indicator OFF)
(U3 indicator OFF)
B
L
L
9
Page 10
61F-G@
10
Basic Type
61F-G4
Dimensions:
page 14
Automatic Water Supply Control with Water
Source Level Indication, Prevention of
Pump Idling Due to Water Shortage, and
Indication of Water Level in Tank
e
Note: Be sure to ground the common Electrode (the longest Electrode).
• Power Supply Connections
110 VAC: Connect S
0
and S1.
220 VAC: Connect S
0
and S2.
• Insert a pushbutton switch (NO)
between E
2
and E8, as shown by
the dotted lines above.
• Do not press the pushbutton if the
low-water alarm sounds and the
pump stops during normal
operation (water below E
3
).
If the supply water level is below E
2
when starting operation or when
recovering from a power interruption
(U
2
indicator OFF), press the
pushbutton to momentarily close the
circuit to start the pump.
Test Operation/Recovering from
Power Interruptions
Connections
• Insert four Electrodes in the water supply source and five Electrodes in the elevated water tank.
• The lower-limit indicator for the water supply source remains ON while the water source level is below E
3
(U2 indicator
OFF).
• When the water level rises to E
2
, the lower-limit indicator turns OFF (U2 indicator ON) and the pump is ready for
operation.
• The upper-limit indicator in the water supply source lights when the water level reaches E
1
(U3 indicator ON).
• The water-shortage indicator for the elevated tank remains ON while the water level in the elevated tank is below E
7
.
The indicator turns OFF (U
1
indicator ON) when the water level rises to E7.
• The pump stops (U
5
indicator ON) when the water level reaches E5 and starts (U5 indicator OFF) when the water level
drops below E
6
.
• If the water level reaches E
4
for any reason, the abnormal water increase indicator for the elevated tank turns ON (U4
indicator ON).
Relay Unit Location
Principles of Operation
Automatic Water Supply Control with Water Source Level Indication, Prevention of Pump Idling Due to Water Shortage, and Indication of Water Level in Tank
220 V power supply 61F-G4
MCCB
RSMT
MK3P
Relay
(See
note 2.)
0 V
24 V
24 V
24 V
24 V
24 V
8V
Relay Unit
Relay Unit
Relay Unit
Relay Unit
Relay Unit
110 V
220 V
0 V
U2
X
110 V
220 V
U5
61F-11
U1
61F-11
U2
61F-11
U3
61F-11
U4
61F-11
4XU5U1XU3U4XU1 U5
U
U
2U3
LL1 LL2 LH1
S0 S1 S2 TC TC2 BTA E7 E6 E5
Water supply
Elevated
source lower
tank water
limit
shortage
LL1 LL2 LH1 LH2 BL1 BL2
Contactor
(See note 1.)
Motor
protection
relay
Water
supply
source
P
E1
E2
E3
E8
2 BL1 BL2BH1BH2
LH
Water supply
Elevated
tank
repletion
PS-4S
Upper limit
Start
Stop
Lower limit
source upper
limit
Elevated
tank water
shortage
Water supply
source lower
limit
BH1BH
Elevated
tank
repletion
E4 E3 E2 E1
E8
Water
supply
source
upper limit
2
Water
tank
E7
E8
E6
E
E5
PS-5S
Full tank
4
Stop
Start
Water
shortag
U2U1U3U
Pushbutton
switch
4
Powe r
U
supply
5
Page 11
■ Connection with Three-phase Four-line Circuit
Note: Be sure to ground terminal E3.
61F-11
Relay Unit
Power source
380 or 415 VAC
R S T N *
M
Water tank
Stop
Start
E2
E3
E1
P
Ta
Electromagnetic switch
Transformer
Rated voltage:
S0-S2: 220 or 240 VAC
Tc Tb E
2
E
1
S
0
S
1
S
2
S
3
U
24 V
8 V
A
*
Water supply source
When supplying power from N-phase to the Controller in three-phase four-line circuit, refer to the following diagrams.
Line voltage (R-S, S-T, or R-T): 380 or 415 VAC
Phase voltage (N-R, N-S, or N-T): 220 or 240 VAC
61F-G@, 220 or 240 VAC
Water Supply
61F-G@
11
Page 12
12
Liquid Level Indication and Alarm
Basic Type
61F-I
Dimensions:
page 14
Liquid Level Indication and Alarm
Water supply
source
MCCB
RS
MP
T
220-VAC power supply 61F-I
Water
tank
Upper limit Lower limit
Intermediate
Alarm
Upper alarm
PS-3S
Lower alarm
Intermediate
(See note.)
E
1
S0 S1 S2 E3 E2 E1
TC BL3 L2
BPLPL
L
1
PL
61F-11
Relay Unit
8 V
220 V
110 V
0 V
24 V
24 V
U
1
U2
U2U1U1U2
61F-11
Relay Unit
E2
E3
• Power Supply Connections
110 VAC: Connect S
0
and S1.
220 VAC: Connect S
0
and S2.
Note: Be sure to ground the common Electrode (the longest Electrode).
Connections
U1U
2
Power
supply
Relay Unit Location
• When the water level drops below
E
2
, the lower-limit indicator turns
ON and the alarm sounds (U
2
indicator OFF).
• When the water level reaches E
2
,
the alarm turns OFF and the
intermediate indicator turns ON
(U
2
indicator ON).
• When the water level rises to E
1
,
the upper-limit indicator turns ON
and the alarm sounds (U
1
indicator ON).
Principles of Operation
61F-G@
Water tank
B
L
H
B
L
M
L
L
Upper
limit
Middle
Lower
limit
E
1
E
2
E
3
1
indicator ON)
(U
1
indicator OFF)
(U
(U
2
indicator ON)
(U
2
indicator OFF)
Page 13
■ Two-Wire Connections
Basic Type
61F-GR
Automatic Water Supply and
Drainage Control
E1
R
E3
E2
U
U
U
Contactor
Water supply
source
Stop
Start
Motor
protective
relay
MCCB
RSMT
220-VAC power supply
61F-GR
(See
note.)
P
8 V
220 V
0 V
110 V
24 V
Water
tank
PS-3SR
S0 S2 E3S1
Tc E1TbTa
61F-11R
Relay Unit
Note: Be sure to ground the common Electrode (the longest Electrode).
• Connect Tb to the contactor’s coil terminal.
• Power Supply Connections
110 VAC: Connect S
0
and S1.
220 VAC: Connect S
0
and S2.
• With 2-wire connections, only two wires are required between
the 61F-GR and Electrode Holder, but three wires are required
for the Electrodes.
• The Electrode Holder must be specified for 2-wire connections.
(Resistance R is built into Electrode Holders for 2-Wire
Connections.)
• The Relay Unit must also be specified for 2-wire connections.
Connections
Note: Be sure to ground the common Electrode (the longest Electrode).
• Connect Ta to the contactor’s coil terminal. (Do not connect
Tb.)
• Power Supply Connections (for models with 110/220-V power)
110 VAC: Connect S
0
and S1.
220 VAC: Connect S
0
and S2.
• With 2-wire connections, only two wires are required between
the 61F-GR and Electrode Holder, but three wires are required
for the Electrodes.
• The Electrode Holder must be specified for 2-wire connections.
(Resistance R is built into Electrode Holders for 2-Wire
Connections.)
• The Relay Unit must also be specified for 2-wire connections.
Connections
The pump stops (U indicator ON) when the water level reaches
E
1
and starts (U indicator OFF) when the water level drops below
E
2
.
Principles of Operation
E
1
E
2
E
3
Water drainage
(U indicator ON)
Pump OFF
Pump ON
(U indicator OFF)
P
The pump starts (U indicator ON) when the water level reaches
E
1
and stops (U indicator OFF) when the water level drops below
E
2
.
Principles of Operation
Automatic Water Supply Control Automatic Drainage Control
220-VAC power supply
RSMT
MCCB
61F-GR
T
a
110 V
220 V
S
61F-G@
0 V
T
c
0
61F-11R
24 V
Relay Unit
8 V
U
T
b
S2E
S
1
U
U
E
1
3
Water
supply
P
Pump OFF
Pump ON
E
E
2
E
3
1
(U indicator ON)
(U indicator OFF)
Contactor
Motor
protective
relay
(See
note.)
Waste
water
tank
P
PS-3SR
R
Start
E
1
E
2
Stop
E
3
Reservoir
13
Page 14
14
Dimensions
61F-G
Mounting Holes
M3 screw
Four, 6-dia holes
Four, 6-dia mounting holes
61F-G1
61F-G2
61F-I
Mounting Holes
Four, 6-dia holes
Four, 6-dia mounting holes
M3 screw
61F-G3
Mounting Holes
M3 screw
Four, 6-dia holes
Four, 6-dia mounting holes
61F-G4
Mounting Holes
Four, 6-dia holes
M3 screw
Four, 6-dia mounting holes
In the interest of product improvement, specifications are subject to change without notice.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Note: All units are in millimeters unless otherwise indicated.
■ Standard Models
61F-G@
Page 15
Terms and Conditions Agreement
Read and understand this catalog.
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you
have any questions or comments.
Warranties.
(a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship
for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). Omron
disclaims all other warranties, express or implied.
(b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCTS. BUYER
ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the
Products or otherwise of any intellectual property right. (c) Buyer Remedy. Omron’s sole obligation hereunder shall be, at
Omron’s election, to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or
replacement thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount
equal to the purchase price of the non-complying Product; provided that in no event shall Omron be responsible for warranty,
repair, indemnity or any other claims or expenses regarding the Products unless Omron’s analysis confirms that the Products
were properly handled, stored, installed and maintained and not subject to contamination, abuse, misuse or inappropriate
modification. Return of any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies shall
not be liable for the suitability or unsuitability or the results from the use of Products in combination with any electrical or
electronic components, circuits, system assemblies or any other materials or substances or environments. Any advice,
recommendations or information given orally or in writing, are not to be construed as an amendment or addition to the above
warranty.
See http://www.omron.com/global/ or contact your Omron representative for published information.
Limitation on Liability; Etc.
OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY.
Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted.
Suitability of Use.
Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the
combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable
third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself
is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine,
system, or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product
with respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE
QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS,
AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE
OVERALL EQUIPMENT OR SYSTEM.
Programmable Products.
Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence
thereof.
Performance Data.
Data presented in Omron Company websites, catalogs and other materials is provided as a guide for the user in determining
suitability and does not constitute a warranty. It may represent the result of Omron’s test conditions, and the user must correlate
it to actual application requirements. Actual performance is subject to the Omron’s Warranty and Limitations of Liability.
Change in Specifications.
Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our
practice to change part numbers when published ratings or features are changed, or when significant construction changes are
made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers
may be assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at
any time to confirm actual specifications of purchased Product.
Errors and Omissions.
Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is
assumed for clerical, typographical or proofreading errors or omissions.
In the interest of product improvement, specifications are subject to change without notice.
2015.9
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/
(c)Copyright OMRON Corporation 2015 All Right Reserved.
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