Floatless Level Switch (Basic Type)
61F-G@
CSM_61F-G__DS_E_4_1
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 high-
temperature environments.
Refer to
Safety Precautions for Floatless Level
Controllers.
Model Number Structure
61F-@@
1 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:
L 2KM:
L 4KM:
H:
D:
R:
T:
General-purpose
Long-distance (for 2 km)
Long-distance (for 4 km)
High-sensitivity
Low-sensitivity
Two-wire
High-temperature
Position of
LED indicator
Ordering Information
Type
Application G
General-purpose
Model
61F-G
Application G1
61F-G1
Application G2
61F-G2
Application G3
61F-G3
Application G4
61F-G4
Application I
Relay Unit
Type
Application
G
61F-I
61F-11
Low-sensitivity
Model
61F-GD
61F-GR
61F-G1R
61F-G2R
61F-G3R
61F-G4R
---
61F-11R
Application
G1
61F-G1D
Application
G2
61F-G2D
Application
G3
61F-G3D
Application
G4
61F-G4D
Application
I
Relay Unit
Long-distance, 2 km
Model
61F-GL 2KM
61F-G1L 2KM
61F-G2L 2KM
61F-G3L 2KM
61F-G4L 2KM
61F-IL 2KM
61F-11L 2KM
2-wire
Model
Long-distance, 4 km
Model
61F-GL 4KM
61F-G1L 4KM
61F-G2L 4KM
61F-G3L 4KM
61F-G4L 4KM
61F-IL 4KM
61F-11L 4KM
Tropical environments
Model
61F-G-TDL
61F-G1-TDL
61F-G2-TDL
61F-G3-TDL
61F-G4-TDL
61F-I-TDL
---
High-sensitivity
Model
61F-GH
61F-G1H
61F-G2H
61F-G3H
61F-G4H
61F-IH
61F-11H
High-temperature
Model
61F-GT
61F-G1T
61F-G2T
61F-G3T
61F-G4T
61F-IT
61F-11T
61F-ID
61F-11D
Note:
When ordering, specify the desired operating voltage at the end of the model number.
Example: 61F-G [110/220 VAC]
Desired supply
voltage
1
61F-G@
Specifications
■
Standard Models
Specifications
Items
General-purpose
Controller
61F-@ (TDL)
(see note
1 and 2)
High-
temperature
Controller
61F-@T
(see note 1)
Long-distance
Controllers
61F-@L 2KM
(for 2 km)
61F-@L 4KM
(for 4 km)
(see note 1)
For control of ordi-
nary 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.
High-sensitivity
Controllers
61F-@H
(see note 1)
Low-sensitivity
Controller
61F-@D
(see note 1)
Two-wire
Controller
61F-@R
(see note 1)
Controlling materials
and operating condi-
tions
For control of ordi-
nary purified water
or sewage water
For control of ordi-
nary purified water
or sewage water
in cases where the
ambient tempera-
ture is high.
For control of liq-
uids with high
specific resis-
tance such as dis-
tilled water
For control of liq-
uids with low spe-
cific resistance
such as salt water,
sewage water,
acid chemicals, al-
kali chemicals
For control of ordi-
nary purified water
or sewage water
used in combina-
tion with Two-wire
Electrode Holder
(incorporating a
resistor of 6.8 kΩ)
It is possible to wire
with less than one
wiring against gen-
eral 61F’s wiring.
Supply voltage
100, 110, 120, 200, 220 or 240
VAC;
50/60 Hz
24
VAC
8
VAC
Operating voltage range
85% to 110% of rated voltage
InterElectrode voltage
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.
0 to approx. 5 kΩ
0 to approx.
1.8 kΩ (for 2 km)
0 to approx.
0.7 kΩ (for 4 km)
4 k to
∞ Ω
(for
2 km)
2.5 k to
∞ Ω
(for
4 km)
2 km max.
4 km max.
Approx. 15 kΩ to
70 kΩ
(see note 5)
Approx. 300 k to
∞Ω
0 to approx.
1.8 kΩ
0 to approx. 1.1 kΩ
InterElectrode operate
0 to approx. 4 kΩ
resistance
InterElectrode release
Approx. 15 k to
∞ Ω
Approx. 15 k to
resistance
∞Ω
Approx. 5 k to
∞ Ω
Approx. 15 k to
∞Ω
Cable length
(see note 3)
Control output
Ambient temperature
Ambient humidity
Insulation resistance
(see note 4)
Dielectric strength
(see note 4)
Life expectancy
Weight
1 km max.
600 m max.
50 m max.
1 km max.
800 m max.
2 A, 220
VAC
(Inductive load: cosφ = 0.4)
5 A, 220
VAC
(Resistive load)
Operating: –10 to 55°C (–10 to 70°C for 61F-@T)
Operating: 45% to 85% RH
100 MΩ min. (at 500
VDC)
2000
VAC,
50/60 Hz for 1 min.
Electrical: 500,000 operations min.
Mechanical: 5,000,000 operations min.
61F-G@: Approx. 380 g, G1F-G1@, G1F-G2@, or G1F-I@: Approx. 750 g; G1F-G3@: Approx. 930 g;
G1F-G4@: Approx. 1,710 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 de-
tails, refer to
Safety Precautions for Floatless Level Controllers.
3.
The length when using completely-insulated, 600-V, 3-conductor (0.75 mm
2
) cabtire cables. Usable cable lengths will become shorter as
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 ter-
minals 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 inter-
nal 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.
•
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.
2
61F-G@
Internal Circuit Diagrams
The schematic diagrams shown below typify the internal connections of the various 61F models. The designations Ta, Tb, and Tc (sometimes re-
ferred 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.
61F-G
0V
100, 110
or 120 V
200, 220
or 240 V
24 V
8V
61F-11
U
Relay Unit
61F-GT
0V
100, 110
or 120 V
200, 220
or 240 V
24 V
8V
61F-11T U
Relay Unit
61F-GL
0V
100, 110
or 120 V
200, 220
or 240 V
24 V
8V
61F-11L U
Relay Unit
U
U
Ta
Tc
Tb
E
2
E
1
Ta
U
Tc
Tb
E
2
U
U
E
1
Ta
Tc
Tb
E
2
U
E
1
S
0
S
1
S
2
E
3
S
0
S
1
S
2
E
3
S
0
S
1
S
2
E
3
61F-GH
(See note.)
0V
100, 110
or 120 V
200, 220
or 240 V
24 V
24 V
61F-11H U
Relay Unit
61F-GD
0V
100, 110
or 120 V
200, 220
or 240 V
24 V
8V
61F-11D U
Relay Unit
61F-GR
0V
100, 110
or 120 V
200, 220
or 240 V
24 V
8V
U
61F-11R U
Relay Unit
U
U
Ta
Tc
Tb
E
2
E
1
Ta
U
Tc
Tb
E
2
U
U
E
1
Ta
Tc
Tb
E
1
S
0
S
1
S
2
E
3
S
0
S
1
S
2
E
3
S
0
S
1
S
2
E
3
3
61F-G@
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
Interchangeable with
---
general-purpose mod-
el (61F-11)
Color of band on name
---
plate
61F-11
61F-11T
Provided
61F-11L
Provided
61F-11H
Not provided
61F-11D
Provided
61F-11R
Not provided
Red
Yellow
Blue
Black
Green
61F-11
E
8
8V
S
7
24 V
S
6
24 V
S
5
4
61F-11T
E
8
8V
S
7
24 V
S
6
24 V
S
5
4
61F-11L
E
8
8V
S
7
S
6
24 V
24 V
S
5
4
Tr
1
Tr
2
X
Tr
1
Tr
2
X
Tr
1
Tr
2
X
x
x
x
x
9
Tb
2
10
Ta
2
x
x
11
Tc
2
1
Tc
1
2
Ta
1
3
Tb
1
9
Tb
2
10
Ta
2
11
Tc
2
1
Tc
1
2
Ta
1
3
Tb
1
Tr
2
9
Tb
2
10
Ta
2
11
Tc
2
1
Tc
1
2
Ta
1
3
Tb
1
61F-11H
(see note)
E
8
S
7
24 V 24 V
S
6
24 V
S
5
61F-11D
E
S
7
8V
24 V
S
6
24 V
Tr
2
S
5
4
61F-11R
E
8
8V
S
7
24 V
S
6
24 V
S
5
4
4
8
Tr
1
Tr
2
X
Tr
1
X
Tr
1
Tr
2
X
x
x
11
Tc
2
1
Tc
1
2
Tb
1
3
Ta
1
9
Tb
2
10
Ta
2
x
x
11
Tc
2
1
Tc
1
2
Ta
1
3
Tb
1
9
Tb
2
10
Ta
2
x
x
11
Tc
2
1
Tc
1
2
Ta
1
3
Tb
1
9
Ta
2
10
Tb
2
4
61F-G@
■
Connections
Automatic Water Supply and
Drainage Control
Basic Type
61F-G
Dimensions:
page 13
Automatic Water Supply Control
Connections
220-VAC power supply
R S T
61F-G
0V
110 V
MCCB
220 V
24 V
8V
61F-11
Relay Unit
U
U
110 V
MCCB
220 V
Automatic Drainage Control
Connections
220-VAC Power supply
R S T
61F-G
0V
24 V
8V
61F-11
Relay Unit
U
U
U
U
T
a
S
0
T
c
S
1
T
b
S
2
E
2
E
3
E
1
T
a
S
0
(See
note.)
T
c
S
1
T
b
S
2
E
2
E
3
E
1
Contactor
PS-3S
Motor
protection
relay
Stop
Water supply
source
M
P
Water
tank
E
1
Contactor
(See note.)
Motor
protection
relay
PS-3S
Start
Waste
water
P
tank
E
3
E
2
Start
E
1
E
3
E
2
Stop
Reservoir
M
Note:
Be sure to ground the common Electrode (the longest Electrode).
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 S
1
.
220 VAC: Connect S
0
and S
2
.
•
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 S
1
.
220 VAC: Connect S
0
and S
2
.
Principles of Operation
Water
supply
P
Pump OFF
E
1
Relay Unit Location
Power
supply
Principles of Operation
Relay Unit Location
Power
supply
U
1
Pump ON
Water tank
U
1
(U indicator ON)
E
1
(U indicator ON)
Pump ON
Pump OFF
E
2
E
3
(U indicator OFF)
E
2
E
3
(U indicator OFF)
P
Water drainage
The pump stops (indicator ON) when the water level reaches E
1
and starts (indicator OFF) when the water level drops below E
2
.
The pump starts (indicator ON) when the water level reaches E
1
and stops (indicator OFF) when the water level drops below E
2
.
5
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