Wenglor SB4-I, Руководство по эксплуатации

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EN
4 Introduction
1. Introduction
1.1 General Information Regarding this Document
This document is intended to serve as a set of operating instructions for personnel which has been authorized and
commissioned by the machine manufacturer or operating company to connect the safety device, integrate it into
the machine, start it up, configure it and maintain it in accordance with the specified stipulations.
Due to the fact that they describe the operation of a safety device, these operating instructions are of a binding
nature.
The wenglor safety device with the designation “Light Array” is described in these operating instructions.
1.2 Function and Use for Intended Purpose
The light curtain monitors the safety field between the transmitter and the receiver. If the safety field is penetrated
by an obstruction, a switching command is triggered. This switching command may prevent initialization of a haz-
ardous machine motion, or may stop an action which has already been started.
Use of the light curtain is only permissible if:
• Hazardous motion can be stopped by electrical means using the light curtain’s safety output
• Adequate detection of possible obstruction is assured with existing resolution
1.3 Brief Explanation of Function- and Operating Modes
Cascading
Safety devices can be series connected such that they all drive a single safety output in order to monitor several
safety fields simultaneously. Cascaded safety devices demonstrate the same performance characteristics as a
single safety device.
Contactor Monitoring
An operating mode for which switching performance of the contacts at an external relay is dynamically monitored.
The contacts must close fully within a specified period of time.
Fix Blanking
This operating mode is required for applications including objects which continuously protrude into the safety
field, thus interrupting specific light beams originating from the safety light curtain. Intrusions into any other point
within the safety field cause the output to switch and stop hazardous motion.
Reduced Resolution
This function reduces the resolution electronically. Thus objects that are smaller than the selected resolution don’t
deactivate the safety output. The function can also be used to prevent machining chips from interfering with cor-
rect functioning of the Safety Light Array.
Restart Inhibit
A function which prevents a machine from starting up automatically after it has been switched on. The machine
can only be enabled by activating an acknowledgement key.
Safety Operating Mode
In this operating mode, the switching outputs are disabled when the safety field is penetrated. The switching out-
puts are automatically enabled after penetration of the safety field is ended.
Safety Output – OSSD (Output Signal Switching Device)
The output of the contactless safety device which is connected to the machine controls. The safety output is deac-
tivated when the safety field is interrupted.
Signal Output
A semiconductor output for auxiliary functions without safety monitoring.