Operation - Omron 61F-GP-N2 Manual

Connections
Automatic Water Supply and Drainage Control
1. Water supply
• Connect electromagnetic switch coil terminal A to Tb.
• The pump stops when the water level reaches E1 and starts when
the water level drops below E2.

Operation

The conductive type level controller consists of a plug-in controller
connected to a set of stainless steel probes. These are cut to length
and inserted vertically into the liquid. A low voltage is applied
between these probes and the earth probe (or tank, if it is electrically
conductive). The water provides a current between the earth probe
and the high-level probe. The output relay in the controller is ener-
gized when the water level reaches the high-level probe and de-ener-
gized when the water level falls below it.
Dimensions
Note: Note:All units are in millimeters unless otherwise indicated.
220 or
240 VAC
MCCB
Electromagnetic
switch
49.4
38 70
38 70
2. Drainage
• Connect the electromagnetic switch coil terminal A to Ta.
• The pump starts when the water level reaches E1 and stops when
the water level drops below E2.
Note: 1. The diagram shows the connections for water supply. When
draining, change the connection Tb to Ta.
2. The earth terminal must be grounded.
Power source
R S T
A
M P
Reservoir
For two-point control a low-level probe is used as well. In this case
the relay does not de-energize until the water level falls below the
low-level probe. Using the low-level probe allows a wide differential
between switching a pump on and off, and can avoid excessive pump
operation during tank emptying or filling. If this differential is not
required, the low-level probe need not be connected.
84 80
Conductive Level Controller
5
4
Tc S2
3 6
Ta S1
Tb E1
2 7
E3 E2
8
1
E1
Stop
Start
E2
E3
61F-
GP-N2
91
PF083A
61F-GP-N2
Earth
Tank
3