Ross Asia CrossMirror CM26 series double valve Safety cat. 4 PL e, internal monitoring, manual reset

Made in Japan
Manufacturer : Ross Asia
Model : CrossMirror CM26 series double valve

Control Reliable CroSS Mirror® Double Valves CM26 Series Product Overview

Safe Return Safety Function

This valve is constructed with precision, stainless steel spools as the main valve elements, and is designed to offer added safety to the operation of many pneumatically controlled machines such as small size pneumatic cylinder-operated presses, valve operators, and safety latches.

The valve has a self-contained monitoring system, requires no additional monitoring and is designed for Category 4, Performance Level e applications. Upon detecting a fault due to discordant spool valve action, the valve locks out and remains so until an overt reset signal (electrical solenoid or remote pneumatic) is applied. This prevents unintentional reset and further bolsters safety. The optional pressure switch provides valuable feedback to the operator regarding whether or not the valve is in “ready-to-run” condition.

VALVE FEATURES’

PRODUCT CREDENTIALS

Specifications

Ordering Information

5/2 SOLENOID PILOT CONTROLLED VALVES – VALVE AND BASE ASSEMBLY

MODEL NUMBER CONFIGURATOR(4-Way 2-Position Valves)

5/2 Solenoid Pilot Controlled Valves – Valves, Manifold Bases, and End Stations for Manifold Assemblies

In addition to the manifold, an end station kit with a check valve must be ordered for each assembly. The number of manifolds with a single supply inlet will be limited to the pressure and flow rate of the system. Too many manifolds may result in too large of an internal pressure drop resulting in valve faults. The manifold end station kit with dual inlet check will allow the manifold to be supplied with air from both ends of the assembly.

Valve Operation

SOLENOID PILOT CONTROLLED VALVES
Normal Operation	The valve is operated by energizing both pilot solenoids simultaneously. This causes both main valve elements to be actuated so that air from inlet port 1 flows to outlet port 4, but not to port 2. Air downstream of port 2 is exhausted through port 3. When the solenoids are de-energized, both valve elements are de-actuated, and air then flows from inlet port 1 to outlet port 2, but no longer to outlet port 4. Air downstream of port 4 is exhausted through port 5. On first operation, or after repair, the pilot valve supply circuit and inherent monitoring elements may need to be reset.
Valve Locked-out	Whenever the valve elements operate in a sufficiently asynchronous manner, either on actuation or de actuation, the valve will move to a locked-out position. In the locked-out position, one crossover and its related timing chamber will be exhausted, and the other crossover and its related timing chamber will be fully pressurized. The valve element (side B) that is partially actuated has pilot air available to fully actuate it, but no air pressure on the return piston to fully de-actuate the valve element. The return springs are limited in travel, and can only return the valve elements to the intermediate (locked-out) position. Sufficient air pressure acting on the return pistons is needed to return the valve elements to a fully home position.
Detecting a Malfunction	If the main valve elements are not both actuated or de-actuated synchronously, the valve defaults to the locked-out position so that outlet port 2 receives full inlet pressure, and outlet port 4 is exhausted through port 5. The valve must now be “reset” to resume normal operation.
Resetting the Valve	The valve will remain in the locked-out position, even if the inlet air supply is removed and re-applied. A remote reset signal must be applied to reset the valve. Reset is accomplished by momentarily pressurizing the reset port. Actuation of the reset piston physically pushes the main valve elements to their home position. Actuation of the reset piston also opens the reset poppet, thereby, immediately exhausting pilot supply air, thus, preventing valve operation during reset. De-actuation of reset pistons causes the reset poppets to close and pilot supply timing chambers to fully pressurize. Reset pressure can be applied by a remote 3/2 normally closed valve, or from an optional 3/2 normally closed solenoid (which includes an integral manual reset button) mounted on the reset adapter.
Status Indicator	The optional status indicator pressure switch will actuate when the main valve is operating normally, and will de-actuate when the main valve is in the locked-out position or inlet pressure is removed. This device is not part of the valve lockout function, but, rather, only reports the status of the main valve.

Valve Schematic

Solenoid & Pressure Switch Pinouts
Solenoid	DIN EN 175301-803 Form A

	DIN EN 175301-803 Form C

	DIN EN 175301-803 Form A

Solenoid Pilot Controlled Valves

Dimensions-Inches(mm)
Basic Size 0 – Valve and Base assembly	with remote reset and with status indicator switch

	with solenoid reset and with status indicator switch

	with remote reset and without status indicator switch

	with solenoid reset and without status indicator switch

Technical Data

Solenoid Pilot Controlled Valves

Dimensions-Inches(mm)
Basic Size 2 – Valve and Base assembly	with remote reset and with status indicator switch

	with solenoid reset and with status indicator switch

	with remote reset and without status indicator switch

	with solenoid reset and without status indicator switch

5/2 PRESSURE CONTROLLED VALVES – VALVE AND BASE ASSEMBLY

MODEL NUMBER CONFIGURATOR(4-Way 2-Position Valves)

5/2 Pressure Controlled Valves – Valves, Manifold Bases, and End Stations for Manifold Assemblies

Valve Operation

PRESSURE CONTROLLED VALVES
Normal Operation	The valve is operated by pressurizing both pilot supply ports simultaneously. This causes both main valve elements to be actuated so that air from inlet port 1 flows to outlet port 4, but not to port 2. Air downstream of port 2 is exhausted through port 3. When the pilot supply ports are de-pressurized, both valve elements are de-actuated, and air then flows from inlet port 1 to outlet port 2, but no longer to outlet port 4. Air downstream of port 4 is exhausted through port 5. On first operation, or after repair, the pilot valve supply circuit and inherent monitoring elements may need to be reset.
Valve Locked-out	Whenever the valve elements operate in a sufficiently asynchronous manner, either on actuation or de-actuation, the valve will move to a locked-out position. In the locked-out position, one crossover and its related timing chamber will be exhausted, and the other crossover and its related timing chamber will be fully pressurized. The valve element (side B) that is partially actuated has pilot air available to fully actuate it, but no air pressure on the return piston to fully de-actuate the valve element. The return springs are limited in travel, and can only return the valve elements to the intermediate (locked-out) position. Sufficient air pressure acting on the return pistons is needed to return the valve elements to a fully home position.
Detecting a Malfunction	If the main valve elements are not both actuated or de-actuated synchronously, the valve defaults to the locked-out position so that outlet port 2 receives full inlet pressure, and outlet port 4 is exhausted through port 5. The valve must now be “reset” to resume normal operation.
Resetting the Valve	The valve will remain in the locked-out position, even if the inlet air supply is removed and re-applied. A remote reset signal must be applied to reset the valve. Reset is accomplished by momentarily pressurizing the reset port. Actuation of the reset piston physically pushes the main valve elements to their home position. Actuation of the reset piston also opens the reset poppet, thereby, immediately exhausting pilot supply air, thus, preventing valve operation during reset. De-actuation of reset pistons causes the reset poppets to close and pilot supply timing chambers to fully pressurize. Reset pressure can be applied by a remote 3/2 normally closed valve
Status Indicator	The optional status indicator pressure switch will actuate when the main valve is operating normally, and will de-actuate when the main valve is in the locked-out position or inlet pressure is removed. This device is not part of the valve lockout function, but, rather, only reports the status of the main valve

Valve Operation

Valve Schematic

Pressure Switch Pinout
DIN EN 175301-803 Form A

Technical Data

Pressure Controlled Valves

Dimensions-Inches(mm)
Basic Size 0 – Valve and Base assembly	with remote reset and with status indicator switch

	with remote reset and without status indicator switch

Basic Size 2 – Valve and Base assembly	with remote reset and with status indicator switch

	with remote reset and without status indicator switch

Manifold Bases and End Stations

Dimensions-Inches(mm)
Manifold Base for Basic Size 0
Manifold Base for Basic Size 0
End Station	For Basic Size 0

	For Basic Size 2

End Station with Check Valve	For Basic Size 0

	For Basic Size 2