European Applications
S
the Minimum Distance (in millimeters)
K
the ISO 13855 recommended hand-speed constant (in millimeters per second), in most cases is calculated at 1600 mm/sec, but may vary
between 1600 to 2500 mm/sec based on the application circumstances;
· not a conclusive determination; consider all factors, including the physical ability of the operator, when determining the value of K to be used.
T
the overall machine stopping response time (in seconds), from the physical initiation of the safety device to the final ceasing of all motion
C
the added distance due to the depth penetration factor equals 250 mm, per ISO 13855. The ISO 13855 C factor may be reduced to 0 if the risk
of encroachment is eliminated, but the safety distance must always be 100 mm or greater
6.4.9 Safety Mat
The Safety Controller may be used to monitor pressure-sensitive safety mats and safety edges.
The purpose of the Safety Mat input of the Safety Controller is to verify the proper operation of 4-wire presence-sensing
on page 79).
Important: The Controller is not designed to monitor 2-wire mats, bumpers, or edges (with or without
sensing resistors).
The controller monitors the contacts (contact plates) and the wiring of one or more safety mat(s) for failures and prevents
the machine from restarting if a failure is detected. A reset routine after the operator steps off the safety mat may be
provided by the Safety Controller, or, if the Controller is used in auto-reset mode, the reset function must be provided by
the machine control system. This prevents the controlled machinery from restarting automatically after the mat is cleared.
WARNING: Application of Safety Mats
Safety Mat application requirements vary for the level of control reliability or category as described by
ISO 13849-1 (EN 954-1). While Banner Engineering always recommends the highest level of safety in
any application, the user is responsible to safely install, operate, and maintain each safety
system per the manufacturer's recommendations and comply with all relevant laws and
regulations.
Do not use safety mats as a tripping device to initiate machine motion (such as in a presence-
sensing device initiation application), due to the possibility of unexpected start or re-start of the
machine cycle resulting from failure(s) within the mat and the interconnect cabling.
Do not use a safety mat to enable or provide the means to allow the machine control to start
hazardous motion by simply standing on the safety mat (for example, at a control station). This
type of application uses reverse/negative logic and certain failures (for example, loss of power to the
Module) can result in a false enable signal.
Safety Mat Requirements
The following are minimum requirements for the design, construction, and installation of four-wire safety mat sensor(s) to
be interfaced with the Safety Controller. These requirements are a summary of standards ISO 13856-1, ANSI/RIA R15.06
and ANSI B11.19. The user must review and comply with all applicable regulations and standards.
Safety Mat System Design and Construction
The safety mat system sensor, Safety Controller, and any additional devices must have a response time that is fast
enough to reduce the possibility of an individual stepping lightly and quickly over the mat’s sensing surface (less than 100
to 200 ms, depending on the relevant standard).
For a safety mat system, the minimum object sensitivity of the sensor must detect, at a minimum, a 30 kg (66 lb) weight
on an 80 mm (3.15 in) diameter circular disk test piece anywhere on the mat’s sensing surface, including joints and
junctions. The effective sensing surface or area must be identifiable and can comprise one or more sensors. The safety
mat supplier should state this minimum weight and diameter as the minimum object sensitivity of the sensor.
User adjustments to actuating force and response time are not allowed (ISO 13856-1). The sensor should be
manufactured to prevent any reasonably foreseeable failures, such as oxidation of the contact elements which could cause
a loss in sensitivity.
XS/SC26-2 Safety Controller
77
Содержание SC26-2 Series
Страница 1: ...XS SC26 2 Safety Controller Instruction Manual Original Instructions 174868 Rev E 20 June 2014 174868 ...
Страница 58: ...Figure 49 Run Time Equipment view Figure 50 Run Time Functional View XS SC26 2 Safety Controller 58 ...
Страница 62: ...Figure 54 Sample Configuration Functional View XS SC26 2 Safety Controller 62 ...
