Product Identification; Package Contents - Ross Rse Series Betriebsanleitung

ENGLISH
The safety function of the 5/2 RSe Series valve is to drive a double-acting cylinder or other
pneumatic actuator forward when the two valve elements are actuated simultaneously, but to
drive the cylinder or other actuator back to its home "safe" position when both valve elements
are shut off or if only one of the two valves is actuated. A fault in the system where only
one valve actuates when switching on or only one de-actuates when shutting off causes the
RSe Series valve to supply air to port 2 of the valve and to simultaneously open port 4 to
exhaust (port 5). This, in turn, causes the cylinder or other actuator to return to its home "safe"
position. Monitoring of the two proximity sensors by the user's external safety monitoring
system makes it possible to detect these fault situations and to shut off and prevent further
electrical energization of the solenoids.
The control outputs of the safety system must be designed and constructed to meet the
Category and/or Performance Level requirements of the safety system, as determined by
the risk assessment of the machine. Normally, the outputs to the solenoids is a dual-channel
output from a safety relay or safety PLC.
2.1.2. Common Cause Failure – CCF
The product has been engineered and manufactured according to the fundamental and proven
safety principles of ISO 1389-1 and -2.
Critical failure modes and causes:
• Incomplete reversal - caused by incomplete return of solenoid valve B.
• The pressure applied at port (4) not being dissipated - caused by incomplete return of
solenoid valve A.
• Failure of the safety function - caused by simultaneous incomplete return of both solenoid
valves (A and B).
Common Cause Failures (CCF) are failures of different components, resulting from a single
event. CCF are not to be confused with cascading faults or common mode faults. Common
cause failures can cause loss of the safety function, especially in dual channel circuits where
both channels could fail simultaneously due to a single event.
• Maintain compressed air quality, i.e., filtration, pressure regulation, lubrication.
• Avoid compressor oils that can cause valve seals to swell, soften, or otherwise deteriorate.
• Operate within prescribed temperature limits.
• Install the valve such that the normal stroke travel of the valve elements are perpendicular to
the main direction of machine vibration and/or mechanical shock.
• Do not use a test pulse longer than allowed by the Technical Specifications.
• Avoid external magnetic fields.
• Do not plug the valve exhaust port.
• Use only high-flow, non-clogging silencers, with similar or higher specifications as
ROSS silencers.
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2.1.3. Diagnostic Coverage
A diagnostic coverage of 99% is achievable through appropriate integration of the RSe
Series valve into the safety control system. The monitoring system must check for the proper
change of state of each valve sensor (S1 & S2) with each change of state of the safety
control system outputs to the valve solenoids (Sol 1 & Sol 2). Detection of a fault by the
safety control system must trigger a shut-off of the safety controller's outputs to the valve
solenoids (Sol 1 & Sol 2). See section 8.
NOTE: On 5/2 versions, in the event of a fault where the side A valve element is de-actuated and
the side B valve element sticks within a very small, specific range of its travel, there is a possibility
of a condition where pressure may not be present in port 2. This fault is detectable because
one position sensor's output will be high (on) and the other sensor's output will be low (off).
WARNING: On 5/2 versions, in the event of loss of pressure in port 2 during a fault could cause
unexpected movement of a cylinder that is being controlled by the valve.
2.1.4. Fault Modes
Note that normal operation requires that Sol 1 & Sol 2 be energized simultaneously for
switching the RSe Series valve on, and de-energizing both Sol 1 and Sol 2 simultaneously
for switching the RSe Series valve off. Faults that could occur during normal operation:
Sol 1 & Sol 2 energized simultaneously
S1 ON, S2 OFF
S1 OFF, S2 ON
S1 OFF, S2 OFF
Sol 1 & Sol 2 de-energized simultaneously
S1 ON, S2 OFF
S1 OFF, S2 ON
S1 ON, S2 ON
2.1.5. Foreseeable Misuse
Risk of Injury!
Misuse may result in injury or damage.
f The product must be used exclusively as intended.
Foreseeable misuse includes:
• Use outdoors
• Bypassing the safety function or diagnostics
• Failing to utilize the onboard sensors to verify valve operation on every cycle – energizing
and de-energizing
• Allowing continued operation of the valve when one or both valve shifted signals (from
position sensors) are not confirmed.
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WARNING
• Use in reverse operation (reversal of supply and exhaust air)
• Operation in low-demand mode per IEC 61508
• Operating at pressures below minimum operating pressure or above maximum operating
pressure.
2.3. Responsibilities of the System Owner
Observe the information on assembly and operating conditions listed in the operating
•
instructions or the data sheet.
• Comply with the further requirements of ISO 13849 (e. g., CCF, DC, PLr, software) if you
intend to use the product in higher categories (2 to 4).
• Make sure that the maximum number of switching cycles (B
is not exceeded. If the expected number of switching cycles for a component exceeds the
B value during its period of use, suitable replacement intervals have to be specified.
10D
• Switch the valve at least once a month to ensure its proper operation.
• Make sure that the fundamental and proven safety principles in accordance with ISO
13849 for implementation and operation of the component are complied with.
• Make sure that the permissible switch-on and switch-off pulses for feedback-free
operation of the pneumatic devices are observed.
• If you operate the RSe Series valve together with an electric two-hand control, it must
comply with the EN 574 standard. Selection and installation of this two-hand control must
take place in accordance with the manufacturer's specifications.
2.4. Safety Instructions
When implementing surge suppression measures, be sure to check whether or not this
•
extends the valve shut off response time which could extend the machine stopping time.
• In case of high levels of machine vibration, use appropriate vibration-reducing elements
when installing the valve.
• Supply the proper voltage as overvoltage situations can result in solenoid burnout.
• Make sure that the silencer's flow capacity is not restricted as this could affect system
performance.
• If required, replace the silencer with a model equivalent or higher in specifications as
ROSS silencers.
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3. Product Identification

Date of manufacture and site of manufacture are permanently stamped:
Indicates an imminent and serious danger that will result in severe or even
DANGER
fatal injury if you fail to avoid it.
Indicates a possible danger that could result in severe or even fatal injury if
WARNING
you fail to avoid it.
Indicates a danger that may result in minor to moderate injuries if you fail
CAUTION
to avoid it.
Indicates potential property damage that may be incurred by the product or
ATTENTION
its surroundings if you fail to avoid it.
Manufacturing site Site abbreviation
ROSS CONTROLS USA (L)
ROSS EUROPA (G)
ROSS UK (RB)
ROSS ASIA (J)
ROSS SOUTH AMERICA (B)
ROSS CONTROLS CHINA (C)
ROSS CONTROLS INDIA (RCI)
See back page for ROSS addresses.
Product label identification & product key identification example, see page 2.
4. Prerequisites for Use of the Product
f Make these operating instructions available to the engineer and assembly technician of
the machine/system in which the product will be used.
f Keep these operating instructions for the entire product life cycle.
4.1. Qualified Personnel
Assembly, installation, commissioning, maintenance, and decommissioning should only be
carried out by qualified personnel that have the required knowledge of and experience in
dealing with electrical and pneumatic control technology.

5. Package Contents

Items included:
• RSe valve • Operating instructions
6. Service, Repair, and Maintenance
f In case of technical problems or a required repair, please contact your local ROSS
representative. If used properly, the RSe valves will not require maintenance. Unless
otherwise required, ROSS recommends performing a functional test at least once a
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month (see 8.1 Test Procedure).
RSe Series Operating Instructions
) within the service life T
10D
Valve printing
(example May 2016)
(5 16 L)
(5 16 G)
(5 16 RB)
(5 16 J)
(5 16 B)
(5 16 C)
(5 16 RCI)
www.rosscontrols.com
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