61F-GP-N8-V50 AC110 Omron, 61F-GP-N8-V50 AC110 Datasheet - Page 65

• Manufacturer Part Number: 61F-GP-N8-V50 AC110
• Description: LEVEL CONTROLLER
• Manufacturer: Omron
• Series: 61Fr
• Type: Level Control - Variable Sensitivityr

Specifications of 61F-GP-N8-V50 AC110

• Applications: Supply and Drain Control
• Mounting Type: Socket Mount (8 pos)
• Voltage - Supply: 110VAC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 61F-GP-N8-V50AC110; 61FGPN8V50AC110

61F
Precautions
Use a Power Supply with Minimal Voltage Fluc-
tuation
Avoid connection to a power supply with a voltage fluctuation great-
er than or equal to +10% or --15%.
Consider the Ambient Temperature
Do not install the 61F where it may be exposed to a temperature of
55°C or more and a humidity of 85% or more. In particular, install the
61F away from heat-generating equipment incorporating coils or
windings. Also avoid locations subject to high humidity or corrosive
gases.
Avoid Vibration and Shocks
Do not subject the 61F to vibration or shocks which can cause chat-
tering problems. Do not install the 61F near contactors that gener-
ate severe shocks while the contactors are in operation.
Do Not Test with a Megaohmmeter
During insulation resistance measurements, never apply the me-
gaohmmeter across the Electrode terminals.
Use Self-holding Electrodes
Use Self-holding (E2) Electrodes when contactor open/close con-
trol is carried out. If E
face can cause incorrect contactor operation and damage to the
contacts.
Be sure to turn OFF the power supply before replacing the plug-in
models.
Short Wiring in Electrode Circuit
Keep the wires connecting the 61F to Electrode Holders as short as
possible. If long leads are used, the floating capacity of the leads,
and abnormal surges or noise in the Electrode circuit can cause
malfunctions.
The thicker the cables, the shorter the permitted wiring length. The
length of the cable connecting the 61F and Electrode described in
the 61F datasheet will be available if a 600-V VCT0.75-mm
cabtire cable is used. Test results indicate that the actual wiring
length using VCT 3.5-mm
of the indicated length for general-purpose applications and 80% of
the indicated length for long-distance applications. When selecting
the cable specification, remember that the wiring length is further
decreased for underground cables and larger diameter cables be-
cause of the increased floating capacity with the ground.
Keep Power Cables Separate from the Electrode
Circuit
Do not pass the leads for the Electrode circuit through the same
duct, or near to, high-tension cables or power cables. This can
cause noise which leads to malfunctions.
Ground Correctly
Ground the common Electrode terminal to reduce the effects of
noise.
Use a Surge Suppressor
Connect a 61F-03B(-04B) Surge Suppressor with the 61F Elec-
trode terminals to protect the circuit from surges. This is particularly
important in lightning-prone areas. To further improve protection,
install a commercial surge suppressor in the power supply to elimi-
nate surges in the power system.
Never touch any of the terminals. Doing so may result in elec-
tric shock.
Never attempt to disassemble the 61F or touch the inside of
the 61F while the power is being supplied. Doing so may result
in electric shock.
Correct Use
!
WARNING
1
Electrodes are used, ripples on the liquid sur-
2
, 3-core cable laid over the ground is 50%
2
, 3-core
Consider the Response Times
The 61F requires a response time not exceeding 80 ms for opera-
tion or 160 ms for reset. Take these response times into account in
cases where precise sequence control is required.
Consider the Liquids to Be Controlled
The 61F cannot be used for any liquid that has almost no conductiv-
ity such as sewage containing oil.
The 61F cannot be used for any flammable liquid such as gasoline,
kerosene, or heavy oil.
Do Not Share Electrodes
Do not connect a single Electrode to more than one 61F. If the
phases of the 8-VAC Electrode-circuit power supplies are opposite
to each other, as shown in Fig. 1, an internal close circuit (return cir-
cuit) is created (indicated by the arrows). The 61F may malfunction
regardless of the liquid level when the 61F power is turned ON. This
problem can be overcome by matching the power supply phases, as
shown in Fig. 2, but in this configuration the internal impedance of
the 61F calculated from the Electrode will be approximately half as
large as the internal impedance of a single 61F. The same phenom-
enon can occur if multiple (not shared) Electrodes, connected to
separate 61F units, are installed close together inside a single tank.
Maintain sufficient clearance between Electrodes connected to
separate 61F units so that they do not interfere with each other.
Common leads, however, can be connected to the ground Elec-
trode.
Fig. 1 Internal Closed Circuit
Fig. 2 Match Phases
T
S
R
8 VAC
So
So
61F
61F
S
S
2
2
8 VAC
61F