1. Catalogs
  2. Comatrol
  3. 11 - LE- Logic Elements

11 - LE- Logic Elements

11 - LE- Logic Elements
1 / 84 PagesView full catalog

11 - LE- Logic Elements

Product catalog summary
Overview: This document is a comprehensive catalog of logic elements and pressure compensators used in hydraulic systems. It details various models, their specifications, and applications, emphasizing their role in controlling pressure, flow, and direction in hydraulic circuits.
Logic Elements Specifications: The catalog includes poppet and spool type logic elements, providing model numbers, cavity descriptions, flow ratings, and pressure capacities. Flow ratings are based on a pressure drop of 7 bar (100 psi) and are intended for comparison purposes.
Key Models and Features:
  • Poppet Type: Models like VLP 12/P2 and VLP 12/A5 are normally closed, offering on/off flow control suitable for high flow relief and directional valve applications.
  • Spool Type: Models such as CP700-1 and HLE10-CPC are normally closed and pilot to close, providing flow control with specific pressure ratings.
Application Notes: Differential sensing valves are discussed, which are spring-biased and modulate based on spring control pressure, inlet pressure, and pilot pressure. Applications include load-sensing for pumps and pressure-compensated flow control.
Pressure Compensators: The document describes restrictive and priority-type pressure compensators that maintain constant flow rates by managing pressure differentials across control orifices, crucial for cost-effective circuit design.
Performance Curves and Ordering Information: Performance curves show the relationship between flow and pressure drop for various models. Ordering information includes housing and port options, seal kits, and dimensions.
Pressure Compensators Specifications: Detailed specifications for pressure compensators like CP313-4, CP300-4, and others are provided, highlighting their type, function, rated pressure, flow, and applications.
Key Features and Considerations:
  • Pressure compensators ensure consistent flow and actuator speed regardless of system pressures.
  • Models cater to various flow rates and pressure requirements, offering versatility for different applications.
  • Proper selection of seals and housing is essential for optimal performance.
Conclusion: The catalog underscores the versatility and importance of logic elements and pressure compensators in hydraulic circuit design, highlighting their role in creating efficient and cost-effective systems.
See more

Catalog excerpts

11 - LE- Logic Elements-1

Member of the Danfoss Group Logic Elements

 Open the catalog to page 1
11 - LE- Logic Elements-2

g~rmm=m*-r<rmi Logic Elements Catalog LUfffOLf mm QUick Reference RESPO IUSIVEXESS IK MOTION Member of the Danfoa Group Logic Element, Poppet Type * Flow ratings are based on a pressure drop of 7 bar [100 psi] unless otherwise noted. They are for comparison purposes only.

 Open the catalog to page 2
11 - LE- Logic Elements-3

Logic Elements Catalog Quick Reference Cavity SDC10-3S Logic Element, Normally Closed, Vent to Open Logic Element, Spool Type 50 l/min [13 US gal/min] 80 l/min [21.1 US gal/min] 150 l/min [40 US gal/min] 190 l/min [50 US gal/min] 320 l/min [85 US gal/min] SDC10-3S Logic Element, Normally Open, Pilot to Open Logic Element, Normally Closed, SDC10-3S Vent to Open 40 l/min [11 US gal/min] 60 l/min [15.8 US gal/min] 75 l/min [20 US gal/min] 114 l/min [30 US gal/min] 200 l/min [53 US gal/min] Logic Element, Spool Type Logic Element, Spool Type Logic Element, Normally Open, Vent to Close 40 l/min [11...

 Open the catalog to page 3
11 - LE- Logic Elements-4

Logic Elements Catalog Quick Reference Pressure Compensator 40 l/min [11 US gal/min] 60 l/min [16 US gal/min] 130 l/min [34 US gal/min] 340 l/min [90 US gal/min] Pressure Compensator, Flow Control, Priority Pressure Compensator Pressure Compensator, Flow Control, Restrictive 40 l/min [11 US gal/ min] 90 l/min [24 US gal/ min] 130 l/min [34 US gal/ min] 284 l/min [75 US gal/ min] LE - Logic Elements Quick Reference Pressure Compensator 40 l/min [11 US gal/ min] 75 l/min [20 US gal/ min] 125 l/min [33 US gal/ min] 200 l/min [53 US gal/ min] Pressure Compensator, Load Sense, Priority, Static * Flow...

 Open the catalog to page 4
11 - LE- Logic Elements-5

Logic Elements Catalog Application Notes Logic Elements are multi-purpose devices. These valves, when used with other cartridge valves, can create a wide variety of circuits for control of pressure, flow, and direction. SPRING BIASED, Spring-biased, normally-closed differential sensing valves include: CP700-1, HLE10-CPC, HLEA10-CPC, CP701-1, and CP702-1. These valves are normally closed and will modulate NORMALLY CLOSED, DIFFERENTIAL SENSING based on the spring control pressure, inlet pressure at port 1, and pilot pressure at port 3. VALVES Spring biased, normally closed, differential sensing...

 Open the catalog to page 5
11 - LE- Logic Elements-6

fV) m =m1-r<Tm f Logic Elements Catalog *-***mmwmmM Application Notes Member of the Danfoss Group SPRING BIASED, NORMALLY CLOSED, DIFFERENTIAL SENSING Common applications displacement pump with single or multiple actuators. Bypass-type pressure-compensated flow control. Multiple actuator load sensing Single actuator load sensing Bypass flow control

 Open the catalog to page 6
11 - LE- Logic Elements-7

Logic Elements Catalog Application Notes SPRING BIASED, Spring-biased, normally-closed, vent-to-open differential sensing valves include: CP700‑2, HLE10NORMALLY CLOSED, CVO, HLEA10-CVO, CP701-2, and CP702-2. These valves are normally closed and will modulate VENT TO OPEN based on the spring control pressure, inlet pressure at port 1, and pilot pressure at port 3. DIFFERENTIAL SENSING VALVES Spring biased, normally closed, vent to open differential sensing valve Common applications include: · Pump unloading. · Pilot-operated relief valve. · Sequence valve. · Selector circuit. LE - Logic Elements...

 Open the catalog to page 7
11 - LE- Logic Elements-8

Logic Elements Catalog Application Notes LOGIC ELEMENT POPPET-TYPE CIRCUIT EXAMPLES Poppet-type logic elements provide a multitude of hydraulic circuit options, as illustrated in the circuit examples below. These poppet designs provide low-leakage and are commonly piloted. to provide the needed functionality, as a pressure relief, check valve, directional valve, or flow control. PRESSURE RELIEF VALVE VLP /P2 LE - Logic Elements Application Notes

 Open the catalog to page 8
11 - LE- Logic Elements-9

Logic Elements Catalog Application Notes Pilot-operated pressure reducing valve SPRING BIASED, NORMALLY OPEN, VENT TO CLOSE, DIFFERENTIAL SENSING VALVES Spring-biased, normally-open, ventto-close differential sensing valves include: CP700-3, CP701-3, and CP7023. These valves are normally open and will modulate based on spring control pressure, outlet pressure at port 1, and pilot pressure at port 3. One application for this valve is to create a high-flow pressure reducing valve when using a small relief valve (like CP208-1), or a proportional relief valve (like PRV08-DAC) as a pilot element....

 Open the catalog to page 9
11 - LE- Logic Elements-10

Logic Elements Catalog Application Notes PRESSURE COMPENSATING, DIFFERENTIAL SENSING VALVES Pressure compensators offer the circuit designer capability to add pressure compensation to any fixed or variable orifice. This ensures that flow, and resulting actuator speed, are maintained regardless of system and working pressures. Note that a pressure compensator is required when using Comatrol direct-acting proportional flow controls; see Proportional valve application notes for more information. Restrictive-type pressure compensator operation Priority-type Priority-type pressure compensators are...

 Open the catalog to page 10
11 - LE- Logic Elements-11

Aii inker of the Confess Group Logic Elements Catalog Application Notes

 Open the catalog to page 11
11 - LE- Logic Elements-12

Logic Elements Catalog Poppet Type, Double-Blocking VLP 12/P2 OPERATION The VLP 12/P2 is a metric 12-size, normally-closed, vent-to-open, poppet-type, double-blocking, spring biased differential-sensing logic element. It will provide on/off flow control from 1 to 2 based on the spring control pressure, inlet pressure at port 1, and pilot pressure at port 3. APPLICATION The valve provides on/off, leakage-free control in both directions, suitable for use as a high flow relief valve when used with a relief valve to pilot. Common applications include: pump unloading, pilot-operated relief valve,...

 Open the catalog to page 12
11 - LE- Logic Elements-13

f~rmm=m-t-r<mM Lo9ic Elements Catalog ™™~M,J?# Poppet Type, Double-Blocking Member of the Banfats Croup VLP 12/P2 Cross-sectional view EXAMPLE CIRCUITS Housing and ports Housing P/N Other housings available

 Open the catalog to page 13
11 - LE- Logic Elements-14

Logic Elements Catalog Poppet Type VLP 12/A5 OPERATION The VLP 12/A5 is a metric 12-size, normally-closed, pilot-to-close, poppet-type, spring biased differential-sensing logic element. It will provide on/off flow control from 1 to 2 based on the spring control pressure, inlet pressure at port 1, and pilot pressure at port 3. Rated pressure Rated flow at 7 bar [100 psi] Weight Cavity Bias spring SCHEMATIC 315 bar [4500 psi] 160 l/min [42 US gal/min] 0.30 kg [0.66 lb] NCS12/3 2 bar [29 psi] PERFORMANCE CURVE Pressure drop 26 cSt [125 SUS] hyd.oil @ 20° C[68°F] APPLICATION The valve provides on/off,...

 Open the catalog to page 14
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.