Omron 61F-GP-N8 - Datasheet

E-5 Level Controllers Conductive Level Controller 61F-GP-N8 Compact Plug-in Level Controllers for Single or Two-point Level Control of Conductive Materials (Liquids and Solids) • Wide range of models: long-distance, high and low-sensitivity, and two-wired types available. • 24/100/110/120/200/220/230/240 VAC operation possible. • Easy installation on DIN track. • Low-voltage (AC) electrodes. • Red LED operation indicator provided. • Conforms to EMC and LVD Directives. • UL/CSA approved. Model Number Structure ■ Model Number Legend 1. Plug-in Type 2. Compact 8-pin Type 3. Applications None: General-purpose type L: Long-distance type H: High-sensitivity type (reverse acting) HY: High-sensitivity type (standard acting) D: Low-sensitivity type R: Two-wired type Ordering Information ■ List of Models 1 2 3 61F-GP-N8@ Application Model number General-purpose type 61F-GP-N8 Long-distance type 2 km 61F-GP-N8L 2KM 4 km 61F-GP-N8L 4KM High-sensitivity type 61F-GP-N8H Low-sensitivity type 61F-GP-N8D Two-wired type 61F-GP-N8R

■ Accessories (Order Separately) Selection Guide for Electrode Holders and Separators Electrode Holders Electrode Separators Selection Guide for Electrodes, Connecting, and Lock Nuts Applications For city water and other general-use electrodes. Easy-to-replace sepa- rate versions facilitate maintenance of elec- trodes. When mounting space is limited. Special 3-pole holder of small size and light weight. Ideal for soft drink vendors, etc., where only limited space is avail- able. For low specific liquids. Used for sewage, sea water, etc., having a low specific resis- tance. In sewage use, electrode holders must be installed 10 to 20 cm apart from one another. For acids, alkalis and sea wa- ter, electrode holders may be as much as 1 meter apart to operate properly. When resistance to high pressure is required. Ide- al for use in tanks where temperature or pressure inside the tank is high, e.g. 250°C Mounting style Flange Screw Flange Screw Insulator material Phenol resin Phenol resin Ceramics Teflon Max. temperature 70°C 150°C (without water drips or vapor on the surface of the electrode holder) 250°C (without water drips or vapor on the sur- face of the electrode holder) No. of electrodes 1 --- --- BF-1 BS-1 3 PS-3S PS-31 --- --- No. of electrodes Model 1 F03-14 1P 3 F03-14 3P Applicable liquids Material Models for individual electrode assembly components Electrode (1m long) Connecting nut Lock nut Model Indication mark Model Inscription Model Inscription Purified city water, industrial water, sewage Equivalent to SUS 304 (AISI-304) F03-01 SUS201 1 line F03-02 SUS201 --- F03-03 SUS201 --- Purified city water, industrial water, sewage, dilute alkaline solution SUS316 (AISI-316) F03-01 SUS316 2 lines F03-02 SUS316 6 F03-03 SUS316 316

E-7 Level Controllers Specifications ■ Ratings and Characteristics Note: 1. The relay in the 61F-GP-N8H de-energizes when there is water present across the electrodes, whereas the relay in the 61F-GP-N8HY energizes when there is water present across the electrodes. 2. The length when using completely-insulated, 600-V, 3-conductor (0.75 mm2) cabtyre cables. Usable cable lengths will become shorter as the cable diameter or number of conductors becomes larger. 3. 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. 4. Possible to use with 10 kΩ or less, however, this may cause reset failure. Model/Items General-purpose Controller 61F-GP-N8 Long-distance Controllers 61F-GP-N8L 2KM (for 2 km) 61F-GP-N8L 4KM (for 4 km) High-sensitivity Controllers 61F-GP-N8H 61F-GP-N8HY (see note 1) Low-sensitivity Controller 61F-GP-N8D Two-wired Controller 61F-GP-N8R Controlling materials and operating conditions For control of ordinary purified water or sew- age water For control of ordinary purified water in cas- es where the distance between sewage pumps and water tanks or between re- ceiver tanks and sup- ply tanks is long or where remote control is required. For control of liquids with high specific re- sistance such as dis- tilled water For control of liquids with low specific re- sistance such as salt water, sewage water, acid chemicals, alkali chemicals For control of ordinary purified water or sew- age water used in combination with two- wired-type electrode holder (incorporating a resistor of 6.8 kΩ) Supply voltage 24, 100, 110, 120, 200, 220, 230 or 240 VAC; 50/60 Hz Operating voltage range 85% to 110% of rated voltage Interelectrode voltage 8 VAC 24 VAC 8 VAC Interelectrode current Approx. 1 mA AC max. Approx. 0.4 mA AC max. Approx. 1 mA AC max. Power consumption Approx. 3.5 VA max. Interelectrode operate resistance Approx. 0 to 4 kΩ Approx. 0 to 1.3 kΩ (for 2 km) Approx. 0 to 0.5 kΩ (for 4 km) Approx. 15 kΩ to 70 kΩ (see note 3) Approx. 0 to 1.3 kΩ Approx. 0 to 2 kΩ Interelectrode release resistance Approx. 15 k to ∞ Ω Approx. 4 k to ∞ Ω (for 2 km) Approx. 2.5 k to ∞ Ω (for 4 km) Approx. 300 k to ∞ Ω Approx. 4 k to ∞ Ω Approx. 15 k to ∞ Ω Response time Operate: 80 ms max. Release: 160 ms max. Cable length (see note 2) 1 km max. 2 km max. 4 km max. 50 m max. 1 km max. 800 m max. Control output 1 A, 250 VAC (Inductive load: cosφ = 0.4) 3 A, 250 VAC (Resistive load) Ambient temperature Operating: −10°C to 55°C Ambient humidity Operating: 45% to 85% RH Insulation resistance (see note 3) 100 MΩ max. (at 500 VDC) Dielectric strength (see note 4) 2000 VAC, 50/60 Hz for 1 min. Life expectancy Electrical: 100,000 operations min. Mechanical: 5,000,000 operations min.

Connections ■ Internal Circuit Diagrams ■ Automatic Water Supply and Drainage Control 1. Water Supply • Connect electromagnetic switch coil terminal A to terminal 2. • The pump stops when the water level reaches E1 and starts when the water level drops below E2. 2. Drainage • Connect the electromagnetic switch coil terminal A to terminal 3. • 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 from terminal 2 to terminal 3. 2. The earth terminal must be earthed. 24 V 24 V 24 V 24 V 8 V 2 Control circuit Control circuit 8 V (see note) 61F-GP-N8/-N8L/-N8D/-N8HY 61F-GP-N8H 61F-GP-N8R Note: 24 V for the 61F-GP-N8HY. Control circuit Power supply Power supply Power supply 0 V 200 V 8 V 24 V 61F-GP-N8 MCCB Tank Stop Start Reservoir THR PS-3S 200-VAC power supply Contactor Control circuit (See note 1 below.) (See note 2 below.)

E-9 Level Controllers Operation The Conductive Level Controller consists of a plug-in controller con- nected 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 conduc- tive). The water provides a current between the earth probe and the high-level probe. The output relay in the Controller is energized when the water level reaches the high-level probe and de-energized when the water level falls below it. 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. Surge Suppressor Unit (61F-03B/04B) A high-capacity protective device is available which protects 61F- series Floatless Level Controllers against faults arising from electri- cal surges (such as indirect strokes of lightning) when the Controllers are employed in elevated water tanks or in high-altitude locations. Specifications Internal Connections Precautions 1. Mount the Surge Suppressor Unit as close to the Controller as possible. 2. When grounding the Surge Suppressor Unit in the vicinity of the Controller, connect the ground side of the Surge Suppressor Unit to electrode E3. 3. When connecting the Surge Suppressor Unit, wire as shown in the following example (with three electrodes). Connection Sockets PF113A-E Track-mounted Socket PL11 Back-connecting Socket Discharge start voltage 90 V ±20 VDC Impulse withstand voltage 200,000 V (1 x 40 µs) Impulse withstand current 6,000 A (1 x 40 µs) 61F-03B 61F-04B Long distance Ground 61F-03B E1 E2 E3 Ground Ground 61F-03B

Dimensions Note: All units are in millimeters unless otherwise indicated. Electrode Holders PS-@S PS-31 BF-1 91 PF083A-E 61F-GP- N8 80 40 20 13 26 92 E2 E1 E3 E1 E3 E2 E4 E2 E3 E4 E1 PF2 80 34 dia. 65-dia. hole Used with coupling Used with mounting bracket PS-3S/-3SR PS-4S/-4SR PS-5S/-5SR Mounting Holes Screw Holes 9-dia. rubber bushing (inner) PF2 parallel thread (effective dia.: 58.135) 11 3 7 12 32 38.5 26 PF1/2 M3 Dust preventive rubber cap (optional) 11 dia. 29.5 dia. PF1/2 Parallel thread 4 dia. Mounting Holes (see note) Electrode SUS304 Rubber packing Note: Standard holder construction includes three integral 300-mm-long elec- trodes. However, a model having 1,000-mm-long electrodes is available on request. (49) 48 18 23 17 14 72 48 60 20 dia. Nut (M6) Cast iron 26-dia. hole Two, 6-dia. holes 33 dia. Terminal bolt SUS201 (M6) Two M5 x 25 mounting screws

E-11 Level Controllers BS-1 Electrode Separators F03-14 1P (for Single Pole) F03-14 3P (for Three Poles) Connecting Sockets Track Mounted Socket Back Connecting Socket 12 39 51 50 101 M18 P = 1.5 24 dia. Width across flats: 20 Nut (iron) Terminal bolt SUS304 (M4) P=0.7 Two M4 P = 0.7 M18 P=1.5 (fine screw thread) 6.5 dia. 28 dia. 20 41 dia. Three, 7 dia. 7±0.2 PF083A-E Mounting Holes Two, M4 or 4.5-dia. holes 52 max. 41 max. 21 max. 25 dia. Eight, M3.5 x 7 sems screws Two, 4.2-dia. holes Terminal Arrangement/ Internal Connections (Top View) 50.5 max. 35 max. 30 dia. Two, 2-dia. holes Approx. 20.5 PL08 Mounting Holes Terminal arrangement/ Internal Connections (Bottom View) Two, 3.5-dia. or M3 Controller mounting holes Two, 3.5-dia. or M3 socket mounting holes 31-dia. hole

Holding Brackets To mount the 61F-GP-N8 Conductive Level Controller on the PF083A Track Mounted Socket, use the PFC-N8 Mounting Brackets attached to the Socket as an accessory. Surge Suppressor Unit Application Examples • Level control in tanks, reservoirs, sewage plants, underground wells, mixing plants etc. • Level control for element protection in pipes, channels, and irriga- tion systems. • Flow detection in pipes, channels, and irrigation systems. • Ice bank control in cold drink dispensers, ice makers, water chillers, bulk milk tanks, etc. • Dispensing of liquids by volume. • Indication of liquid buildup due to filter blockages. • Pollution/foul water detection for rivers, drains, etc. • Alarm control warning of abnormal or dangerously high or low lev- els. ■ Application When using electrodes in sea water or sewage, provide a sufficient interval (normally 1 m) between the electrodes. If the sufficient inter- val cannot be provided, employ a low-sensitivity-type Floatless Level Controller. When taping one of the electrodes to prevent it from contacting the other electrodes in water, do not tape the electrode entirely but leave at least 100 mm of its end uncovered. When the required length of the electrode is more than 1 m, use a separator at each joint of two electrodes so as to prevent the elec- trodes from contacting one another. Note: Avoid use of the separators in dust-containing liquids. Usually, electrodes are used in a set of three: long, medium, and short. Connect the short electrode to E1, the medium electrode to E2, and the long electrode to E3. Make E3 at least 50 mm longer than E2. Electrodes are in actual contact with the liquid. Standard electrodes are made of stainless steel and usable in purified water, sea water, sewage, acid (except acetic acid, sulfuric acid, etc.) and alkaline liq- uids, although they may corrode depending upon the temperature and working conditions. PFC-N8 Approx. 80 PF113A-E 61F-03B 61F-04B 61F-03B 61F-04B 1 m 1 m E1 E2 E3 Min 50 mm

E-13 Level Controllers Note that the 61F-GP-N8 Conductive Level Controller is capable of controlling liquids with specific resistances of up to 30 kΩ-cm when the Controller employs a PS-3S electrode holder with the elec- trode(s) submerged to a depth of 30 mm max. Precautions ■ How to Mount Electrodes Connecting Electrodes to Electrode Holders Connecting One Electrode to Another Kind of water Specific resistance Applicable type City water 5 to 10 kΩ-cm Standard type Well water 2 to 5 kΩ-cm Standard type Industrial water 5 to 15 kΩ-cm Standard type Rainwater 15 to 25 kΩ-cm Standard type Sea water 0.03 kΩ-cm Low-sensitivity type Sewage 0.5 to 2 kΩ-cm Low-sensitivity type Distilled water 100 kΩ-cm or less High-sensitivity type Over 100 kΩ-cm Consult OMRON Electrode holder Clamp screw Connecting nut Spring washer Lock nut Electrode 1. Spin a lock nut and a spring washer onto the electrode. 2. Fully fit the electrode into the connecting nut attached to the electrode holder. 3. Tighten the electrode with the two clamp screws. 4. Secure the connecting nut by tightening the lock nut and spring washer. Electrode Connecting nut Spring washer Lock nut Spring washer 1. Spin a lock nut and a spring washer onto the electrode. 4. Secure the connecting nut by tightening the lock nut and spring washer. 3. Tighten the electrode with the two clamp screws. 2. Fully fit the electrode into the connecting nut attached to the electrode holder.

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. Cat. No. F043-E1-02