About This Documentation; Notes On Safety - Ross Rse Series Betriebsanleitung

RSe Series Operating Instructions

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.
1.1. Warning Notices in these Operating Instructions
In these operating instructions, warning notices precede chapters with handling requirements
which incur risks of personal injury or material damage.
Warnings are structured as follows:
Type or source of hazard!
Consequences
f Measures to avert danger
• Warning triangle: Indicates a risk of fatal or severe injuries.
• Signal word: Indicates the severity of the danger.
• Type or source of hazard: States the type of danger or the source of the hazard.
• Consequences: Describes possible consequences of ignoring the warning.
• Measures to avert danger: Indicates how to avoid the danger. It is essential that the
measures to avert danger are complied with.

2. Notes on Safety

The product has been manufactured according to the accepted rules of current technology.
There is risk of injury or damage if the following safety instructions and warnings given in this
instruction manual are not observed.
2.1. Intended Use
The RSe Series of double valves are safety components designed and manufactured in
accordance with Machinery Directive 2006/42/EC and bear the CE mark. The RSe Series
line of double valves are redundant 3/2 or 5/2 valves that are designed to meet the needs
www.rosscontrols.com
SIGNAL WORD
and requirements of safe air supply/exhaust (3/2 valves) and safe cylinder return (5/2 valves)
applications for machinery with pneumatic controls. Typically, these valves are implemented to
meet the Category 4 and/or Performance Level e requirements of a machine's (or system's)
safety circuit as determined by a risk assessment of the hazards and tasks required of
employees that interact with the machine/system.
f See section 10 "Technical Data" for the standards and test values complied with and adhered
to by the product. See the declaration of comformity for product-relevant EC directives.
The 3/2 RSe Series valve is designed to supply air to a zone or entire machine/system until
signaled to shut off and exhaust residual downstream pneumatic energy from the machine.
Thus, reducing the hazards associated with the presence of residual energy during employee
access and/or minor servicing. The safety function of the 3/2 RSe Series valve is to shut off
supply of pneumatic energy and to exhaust any pneumatic energy from downstream of the
valve. Note: The RSe Series valve cannot exhaust pneumatic energy from downstream of
obstructions such as check valves and closed center function valves.
The 5/2 RSe Series valve is designed to control the direction of air flow into and out of a
double-acting cylinder or other pneumatic actuator in order to drive the cylinder forward or
backward to suit the requirements of the machine operation. However, the RSe Series does
this with the same level of control expected of the machine's/system's safety circuit. The
safety function of the RSe Series valve is to return the cylinder/actuator to its home "safe"
position whenever a fault occurs within the valve. Such a monitoring system must be capable
of inhibiting the operation of the valve.
The RSe Series valves are designed for external monitoring for safe, redundant operation
of the valves. The RSe Series valves are constructed of redundant, 3/2 or 5/2 spool type
valves, and have an overall function of a single solenoid pilot-operated, spring return valve.
Each single valve in the RSe Series is equipped with a PNP proximity sensor. Monitoring
both of these sensors on each actuation and de-actuation of the RSe Series valve provides
a diagnostic coverage up to 99%. Monitoring of these sensors is to be done by an external
monitoring system.
2.1.1. Safety Function According to ISO 13849 and EN 692
RSe Series valves are designed in accordance with the requirements listed in ISO
13849-1 and -2. Their "fail-to-safe" safety function is ensured even in case of a fault
within the valve (e.g., caused by wear, contamination, or similar situations).
The safety function of the 3/2 RSe Series valve is to only supply compressed air (pneumatic
energy) to the machine/system when the two valve elements are actuated simultaneously,
but to shut-off the supply and to exhaust any downstream compressed air when both valves
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 switching off prevents
air from being supplied downstream and simultaneously exhausts any air that is already
downstream. 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.
ENGLISH
3