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DM1E, DM2E, DM2C | English
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1 About This Documentation
These instructions contain important information for the safe and appropriate
assembly and commissioning of the product.
f Read these instructions carefully, especially the section "Notes on Safety",
before working with the product.
Additional documents:
•
SISTEMA libraries, see www.rosseuropa.com
•
BG certi¿ cate, see www.rosseuropa.com
•
Technical documentation D510, see www.rosseuropa.com
f Furthermore, observe general, statutory and other binding rules of the Eu-
ropean and national laws, as well as the valid regulations in your country to
protect the environment and avoid accidents.
2 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.
2.1 Personnel quali¿ cations
Assembly, installation, commissioning, maintenance, and decommissioning may
only be carried out by quali¿ ed personnel that have the required knowledge of
and experience in dealing with electrical and pneumatic control technology.
3 Delivery Contents
The delivery contents include:
•
DM valve
•
Operating instructions
•
2x blanking plugs for second connection 1+2 (see section „Connecting the
pneumatics and the electrics")
4 Service, Repair, and Maintenance
f In case of technical problems or a required repair, please contact your local
ROSS service. If used properly, the DM valves will not require maintenance.
Unless otherwise required, ROSS recommends performing a functional test
at least once annually (see 7.1 „Conducting a function test").
5 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.
5.1 Intended use
®
®
The type DM1E
/DM2E
/DM2C
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.
5.1.1
Safety function according to ISO 13849
DM valves are self-testing, redundant systems in accordance with the require-
ments 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, conta-
mination, 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-contai-
ned). Series DM2E/DM2C feature additional memory (fault memory) and reset
functions.
The product has been engineered and manufactured according to the funda-
mental and proven safety principles of ISO 13849-1 and -2.
®
electropneumatic double valves (DM valves)
5.1.2
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 speci¿ ed in the technical data
•
Observe the permissible operating pressure
5.2 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 de¿ ned in the technical data
•
Unauthorized modi¿ cations
•
Bypassing the safety function
•
Use in reversible operation (reversing of supply and exhaust air)
•
Vacuum operation
5.3 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
ware) if you intend to use the product in higher categories (2 to 4).
f Make sure that the maximum number of switching cycles (B
service life T
(typical assumption as per ISO 13849-1 = 20 years) is not
M
exceeded. If the expected number of switching cycles for a component
exceeds the B
value during its period of use, suitable exchange intervals
10d
have to be speci¿ ed.
f Switch the valve at least once a month to ensure its proper function.
f Make sure that the fundamental and proven safety principles 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.
5.4 Safety instructions
f When implementing safety measures against switch-off surges, check whe-
ther 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 separa-
tely.
f In case of high levels of machine vibrations, use appropriate vibration-redu-
cing 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 À ow capacity is not restricted as this would
impair valve performance.
f If required, replace the silencer exclusively with a corresponding ROSS
model (D5500, see D510, item 1).
6 Assembly and Installation
6.1 Connecting the mechanics
The double valves described in these operating instructions may only be ins-
talled by a quali¿ ed, trained professional. The product may only be used within
the scope of the "intended use" as described in these operating instructions.
The cables and cable connections as well as the electrical control for the double
valves must comply with the applicable safety regulations.
6.2 Connecting the pneumatics and the electrics
Pneumatic connections 1 + 2 can be used on both sides. The delivery contents
include two blanking plugs for unused connections. These pneumatic connec-
tions can be used for further functions (e.g. for controlling a start valve).
f Connect the compressed air supply to connection 1 and the load to connec-
tion 2 (see Fig. 1).
Connection 3 is equipped with a silencer at the factory.
f Connect the electrics in accordance with Fig. 2 and 3. Sockets in ac-
cordance with DIN EN 175301-803 form A (previously DIN 43650, form A)
for pilots a, b and reset have to be ordered separately. The pressure switch
includes a socket.
3
, soft-
r
) within the
10d
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