About This Documentation; Intended Use; Foreseeable Misuse; Responsibilities Of The System Owner - Ross DM1 Serie Instrucciones De Servicio

ENGLISH

1 About this Documentation

These instructions contain important information for the
safe and appropriate assembly and commissioning of the
product.
f Read these instructions all the way through, particularly
section 2 "Notes on Safety", before working with the
product.
Additional documentation:
• SISTEMA libraries
• DGUV (formerly BG) certificate: German professional
association
• Technical documents
For more information see last page for contact information, or
visit www.rosscontrols.com.
f In addition, observe all applicable local and national
regulations on accident prevention and on environmental
protection.
2 Notes on Safety
The product has been manufactured according to the
accepted rules of current technology. Even so, there is a
risk of injury or damage if the following safety instructions
and the warnings given in this instruction manual are not
observed.

2.1 Intended Use

1 2®
The type DM C / DM
(DM valves) are safety components in accordance with
Machinery Directive 2006/42/EC and bear the CE marking.
Their intended use is to control ventilation and exhaust in
compressed air systems or similar applications, as well as
to avoid unexpected switch-on and release of energy in
pneumatic tubing systems and end devices in the industry.
f See section 8 „Technical Data" for the standards and
test values complied with and adhered to by the product.
See the declaration of conformity for product-relevant EC
directives.
2.1.1 Safety Function according to ISO 13849
DM valves are self-testing, redundant systems in
accordance with the requirements listed in ISO 13849-1
and -2. Their pneumatic "fail-safe exhaust" safety function
is ensured even in case of a valve failure (e.g., caused by
wear, contamination, or similar).
For the safety function, DM valves feature control
technology properties to category 4 / Performance Level e
in accordance with ISO 13849-1 and -2, if integrated
correctly into the control system.
All DM valves are equipped with a "Dynamic Monitoring"
function (self-contained). Series DM
memory (fault memory) and reset functions.
The product has been engineered and manufactured
according to the fundamental and proven safety principles
of ISO 13849-1 and -2.
2.1.2 Common Cause Failure – CCF
Common cause failures result in a loss of the safety
function as both channels fail simultaneously in this case.
Apply the following measures to prevent common cause
failures:
• Observe the permissible values for vibration and impact
loading
• Observe the temperature range
• Observe the compressed air quality as specified in the
technical data
• Observe the permissible operating pressure
4
C electropneumatic double valves
2®
C feature additional

2.2 Foreseeable Misuse

Warning: Misuse may result in injury or damage.
Foreseeable misuse includes:
• Use in non-industrial applications/residential areas
• Use outside of the product limits defined in the technical
data
• Unauthorized modifications
• Bypassing the safety function
• Use in reversible operation (reversing of supply and
exhaust air)
• Vacuum operation

2.3 Responsibilities of the System Owner

f Observe the information on assembly and operating
conditions listed in the operating instructions or the data
sheet.
f Comply with the further requirements of ISO 13849
(e.g., CCF, DC, PL , software) if you intend to use the
r
product in higher categories (2 to 4).
f Make sure that the maximum number of switching cycles
(B ) within the service life T
10d
per ISO 13849-1 = 20 years) is not exceeded. If the
expected number of switching cycles for a component
exceeds the B value during its period of use, suitable
10d
exchange intervals have to be specified.
f Switch the valve at least once a month to ensure its
proper function.
f Make sure that the fundamental and proven safety prin-
ciples in accordance with ISO 13849 for implementation
and operation of the component are complied with.
f Make sure that the permissible switch-on and switch-
off pulses for feedback-free operation of the pneumatic
devices are observed.

2.4 Safety Instructions

f When implementing safety measures against switch-off
surges, check whether these extend the valve's switch-
off time.
f If required, determine the run-on time (possible "reach
into hazard area") of a machine equipped with DM
valves and a plug at connection "3" of the valve or at
the switching point of the machine's overrun monitoring
(if available).
f Check if the valve's electrical connection cables have to
be routed separately.
f In case of high levels of machine vibrations, use
appropriate vibration-reducing elements when mounting
the valve.
f Avoid overvoltages as these result in solenoid burnout.
The DM valves come with a special silencer that complies
with the requirements of ISO 13849 and which features a
design that largely prevents clogging.
f Only use DM valves with a properly mounted silencer.
f Make sure that the silencer's flow capacity is not
restricted as this would impair valve performance.
f If required, replace the silencer exclusively with a
corresponding ROSS model.
3 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 during the entire
product life cycle.
1
DM C, DM
(typical assumption as
M

www.rosscontrols.com
2®
C