Directional spool valves, direct operated, with hydraulic actuation LS 1378

Description

• Size 32
• Component series 1X
• Maximum operating pressure 210 bar
• Maximum flow 500 l/min

Features

• 6/2 directional design
• For subplate mounting
• Spool position monitoring

Product description

Type code

Technical data

(For applications outside these values, please consult us!)

general

hydraulic

electrical

When establishing the electrical connection, the protective grounding conductor (PE) must be connected correctly.

Diagrams/characteristic curves

(measured with HLP46, ϑOil = 40 ±5 °C)

Δp-qV characteristic curves

Symbols/Circuit diagrams

Dimensions

Dimensions in mm

Required surface quality of the valve contact surface

Notice:

The dimensions are nominal dimensions which are subject to tolerances.

Valve mounting screws (separate order)

Extended functions and versions

Inductive proximity sensor type QS

With on/off valves, contactless proximity sensors with integrated switching amplifiers are switched after reaching of the spool position to be monitored. The spool position reached is displayed by a binary signal.

Advantages of the proximity sensors:

• Short-circuit-proof

• Available with M12 x 1 plug-in connection

• Direct monitoring of the spool position at the control spool

• Long life cycle

• High reliability due to no use of dynamic seals

• Reaction time of the switch upon operation approx. 15 ms

Notices:

Valves with proximity sensors in safety-relevant controls may only be assembled and commissioned by hydraulically and electrically trained specialists. Maintenance work requires special tools and devices. This work may only be performed by authorized specialists or in the factory.
Improper work at safety equipment leads to a danger of personal injury and damage to property.

• The essential valve components are coordinated with each other in the production plant and adjusted during assembly. They must not be interchanged. In case of valve or position switch defects, the complete valve must be exchanged.

• The factory setting of the proximity sensor must not be changed. The proximity sensor may only be set by the valve manufacturer.

• The proximity sensor must be automatically monitored by the machine control to prevent initiation of a new machine cycle even in case of a failure of the proximity sensor.

• The machine control and the selected components are to be designed so that the leakage cannot lead to an inadmissible closing movement.

• The switching times according to ISO 6403 specified in the respective valve data sheets do not correspond to the reaction times of the proximity sensor (time between signal change at the solenoid and the signal change of the proximity sensor).
  Temporal query mechanisms should be set to a minimum of 80 … 100 ms.

Electrical connection

Connection voltage	24 V ±25 %, direct voltage
Admissible residual ripple	≤15 %
Load capacity	maximum 200 mA
Switching outputs	PNP transistor outputs, load between switching outputs and GND
Pinout	1	+24 V
	2	Switching output: 200 mA
	3	0 V, GND
	4	Switching output: 200 mA

Notice:

The electricity is connected via a 4-pole mating connector (separate order, see "Accessories) with connection thread M12 x 1.

Switching logics

Depending on the spool position to be monitored, the switching outputs have the following function:

Version QSABG24W

(Proximity sensor on side A and B, monitored spool position "a" and "b")

0	Contacts open (0 V)
1	Contacts closed (24 V)
	Overlap area / hydraulic symbol change
①	Spool position “b”
②	Spool position "a" (rest position)

Accessories

Mating connectors for sensors and valves with connector “K24”, “K35” and “K72”, M12 x 1

4P Z24

Mating connectors for sensors and valves with connector “K24”, “K35” and “K72”, M12 x 1

4P Z24

• For sensors and valves with connector “K24”, “K35” and “K72”
• Mating connectors M12, 4-pole, line cross-section 0.75 mm2

• Data sheet

• Spare parts and repair

Mating connectors for sensors and valves with connector “K24”, “K35” and “K72”, M12 x 1, with assembled connection line

4P Z24 +

Mating connectors for sensors and valves with connector “K24”, “K35” and “K72”, M12 x 1, with assembled connection line

4P Z24 +

• For sensors and valves with connector “K24”, “K35” and “K72”
• Mating connectors M12, 4-pole, line cross-section 0.75 mm2

• Data sheet

• Spare parts and repair

Ordering codes

Downloads

Directional spool valves, direct operated, with hydraulic actuation Data Sheet | RE24783 | 2020-02-01 | English | PDF | 434k Product Groups: Pilot operated Type LS 1378