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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.
These products are designed and manufactured in accordance with the safety
principles of ISO 13849-1.
2.1.2. Common Cause Failure – CCF
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, e.g., 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, available from ROSS
2.1.3. Diagnostic Coverage
A diagnostic coverage of 99% is achievable through appropriate integration of the M35
Series valve into the safety control system. The monitoring system must check for the
proper change of state of each valve pressure 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.
2.1.4. Fault Modes
Note that normal operation requires that Sol 1 & Sol 2 be energized simultaneously for
switching the M35 Series valve on, and de-energizing both Sol 1 and Sol 2 simultaneously
for switching the M35 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 ON, S2 ON
Sol 1 & Sol 2 de-energized simultaneously
S1 ON, S2 OFF
S1 OFF, S2 ON
S1 OFF, S2 OFF
2.1.5. Foreseeable Misuse
Risk of Injury!
Misuse may result in injury or damage.
f The product must be used exclusively as intended.
The following applications are prohibited:
•
Use outdoors
•
Use in non-industrial applications/residential areas
•
Use outside of the product limits defined in the technical data
•
Unauthorized modifications
•
Use as a press safety valve to control a clutch or brake
•
Operation with a low demand rate (low demand mode) according to IEC 61508
•
Bypassing the safety function or diagnostics
•
Allowing continued operation of the valve when one or both valve shifted signals
(from the onboard mid-position sensors) are not confirmed
•
Use in reverse operation (reversal of supply and exhaust air)
•
Operation in low-demand mode per IEC 61508
•
Operation in hazardous locations.
ROSS CONTROLS is not liable for any damages resulting from improper use.
The user alone bears the risks of improper use of the product.
2.2. 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
service life T
is not exceeded. If the expected number of switching cycles for a
M
component exceeds the B
value during its period of use, suitable replacement
10D
intervals have to be specified.
4
.
®
WARNING
) within the
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 M35 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.
2.3. 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 high-flow, non-clogging silencers, available
from ROSS
.
®
3. Product Identification
Date of manufacture and site of manufacture are permanently stamped:
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:
•
M35 Series 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 M35 Series valves will not require
maintenance. Unless otherwise required, ROSS
functional test at least once a month (see 8.1 Test Procedure).
7. Assembly and Installation
Risk of injury due to installation while pressurized or with live parts!
Installation while pressurized or with electrical power switched on can result in injuries due to
sudden pressure build-up or electric shock.
f De-energize and de-pressurize the relevant system parts before installing the valves.
f Secure the system to prevent it being switched back on again.
ATTENTION
Destruction of components!
Chemical substances can damage the surface, the markings and the seals of the device.
f Install the valve such that it is protected against the effects of chemicals.
Damage to the device through storage at incorrect temperatures!
The storage temperature represents the permissible ambient temperature and depends on the
type of valve in question.
f Observe the temperature information in chapter 10 "Technical Specifications."
M35 Series Operating Instructions
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)
recommends performing a
®
CAUTIONS
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