KEYENCE GL-R Series - Manual (Page 4)

4 E GL-R-IM
 : Available without the configuration software
 : Available with the configuration software
 () : Available without the configuration software, Functionality can be expanded when using the configuration software.
 Series connection
Up to three GL-R units can be serially connected and used as a single light curtain.
 OSSD
The OSSD is a safety-related control output. It connects to an external device (load), such as an FSD or
MPCE. The GL-R generates self-diagnosis signals on its internal control circuit to perform diagnostics on
the output circuit (OSSD). These signals periodically force the OSSD into a temporary OFF state when
no interruption exists in the detection zone.
 Interlock function
Interlock is a function that prevents the OSSD from automatically going to the ON state from an OFF
state.
You can prevent the unintended start-up and/or the unintended restart of the machine if an interlock is
applied to the GL-R.
 External device monitoring (EDM function)
EDM (External Device Monitoring) is a function of the GL-R that monitors the state of the control devices
which are externally connected to the GL-R. The GL-R can detect a fault, such as welded contacts on
external devices, as long as the EDM function is activated.
This function is available only when connecting the 11-core cable to the receiver.
 Fixed Blanking
During normal operation, the OSSD remains in the ON state while the GL-R detects no interruption in the
detection zone, and the OSSD goes to the OFF state when the GL-R detects interruption in the detection zone.
On the other hand, if fixed blanking is enabled on certain beam axes, the OSSD remains in the ON state
as long as the GL-R detects interruption on those beam axes and no interruption elsewhere in the
detection zone.
 Reduced resolution
During normal operation, the OSSD goes to the OFF state when the GL-R detects interruption in the
detection zone.
On the other hand, if reduced resolution is enabled on the GL-R with the number of beam axes to be
ignored and not monitored specified, the OSSD remains in the ON state even while the GL-R detects
interruption on certain beam axes as long as the total number of interrupted beam axes is less than or
equal to the number of ignored beams.
 Muting Function
The muting function is used to temporarily suspend the GL-R's safety functions while the GL-R receives
a signal from muting devices (such as sensors or switches). Before this function can be used, the outputs
from the muting devices must be connected to the muting input terminal on the GL-R.
In addition, the configuration software provides the user with the opportunity to select the beam axes to
be in the muted condition. You can minimize the number of beam axes to be in the muted condition by
using the configuration software. Therefore, you can reduce the risk of interrupting the hazardous zone.
 Muting device
When using the muting device, it must be met with the following conditions.
•
The muting device output must be N.O. (normally open).
• Output of the muting device must be the output with contacts, and must be PNP output type if PNP
output type cable is used, or NPN output type if NPN output type cable is used. Also, the muting
device must be capable of 2 to 3 mA current.
• Do not use one muting device with multiple outputs in place of two or more muting devices. (Only
one output per one muting device must be used.)
• If the muting device has a timer function that can adjust the output timing, do not use that function.
 Muting lamp
When using the muting lamp, it must meet the following conditions.
For an incandescent lamp : rated 24 V DC, 1 to 5.5 W
For an LED indicator : rated current consumption must be 10 to 230 mA.
 Conditions for initiation of muting
Muted condition is initiated if all of the following conditions are met:
•
Muting input 2 turns ON within 0.04 to 3 seconds after muting input 1 turns ON
• GL-R detects no interruption in the detection zone
• OSSD is in the ON state and remains for 0.5 seconds or more.
 Conditions for termination of muting
Muted condition is terminated if one of the following conditions is met:
•
Either of the muting inputs goes to the OFF state for at least 5 ms.
• Light curtain goes into the error condition
• Wait input goes to ON state
• The power supply is interrupted or restored.
• Maximum muting period of approx. 5 minutes has been passed.
 Changing of conditions for muting
The following muting conditions can be changed through the configuration software or a special
procedures.
 Condition for Initiation of muting
1. Time period specification of 0.04 s to 3 s between muting input 1 and muting input 2 can be option.
2. Sequence specification of muting inputs can be option. (Default sequence: muting input 1 is first,
muting input 2 is second.)
 Condition for termination of muting
3. Time period specification form muting input OFF to termination of muted condition. (Default is 0
seconds.)
4. Maximum muting period of approx. 5 minutes can be option.
 Condition for muting lamp
5. Error condition can be initiated if muting lamp has some failure.
If you choose these options according to your machine application, password setting and/or password
input is required as a special procedure.
The responsible personnel who intends to apply these options mentioned above from 1 to 4 have to
perform the risk assessment based on the machine application.
 Muting bank function
The muting bank function can be activated through the configuration software.
You can configure up to three muting banks on the GL-R. Each muting bank is a group of beam axes that
will go into a muted condition upon activation of muting.
In order to activate a muting bank, you must switch (ON and OFF) the muting bank input.
 Override function
During normal operation, the OSSD goes to an OFF state if the muting function is deactivated and an
interruption remains in the detection zone of the GL-R. The OSSD OFF state will remain until the
obstruction is removed.
Override function allows a temporary manual suspension of the GL-R safety functions.
This makes it possible to remove the obstruction remaining in the detection zone of the GL-R. (Machine
is able to be manually operated on a temporary basis because the safety function of the GL-R is
temporarily suspended.)
 Conditions for initiation of override
Override function is initiated if all of the following conditions are met and the wait input goes to the ON
state within 0.04 s to 1 s after the override input turns ON state.
•
GL-R is not in the error condition.
• GL-R detects interruption in the detection zone. (One or more beam axis is blocked.)
• OSSD is OFF state. (including interlock condition)
• Either of muting inputs, or both, turns ON state
 Conditions for termination of override
Override function is terminated if one of the following conditions is met:
•
All of muting inputs turn OFF.
• Either the override input or wait input, or both, turn OFF.
• Light curtain goes to into the error condition
• Maximum override period of approx. 60 seconds has been passed.
 Changing of the condition for override
The following condition can be changed through the configuration software.
 Conditions that deactivate the override condition
• Maximum override period of approx. 60 seconds can be option.
If you choose this option according to your machine application, password setting and/or password input
is required. The responsible personnel must securely manage the password. The responsible personnel
who intends to apply this option must perform the risk assessment based on the machine application.
Installation
 Overview
Wiring system
Optical
synchronization
One-line Wire synchronization
Cable
combination Cable for the transmitter 5-core Series connection 7-core 11-core
Cable for the receiver 5-core 11-core 5-core 11-core 7-core 11-core 7-core 11-core
Available
function
OSSD output        
AUX (auxiliary) output      
Error output      
Muting function     
Partial muting function     
Muting bank function 
Muted condition output     
Muting lamp output  
Override function  ()  ()
Interlock function  ()  ()  ()  ()
Interlock-reset-ready output    
EDM function  ()  ()  ()  ()
Wait input    
Alert output      
Clear/Block output      
Reset input (for error)    
Reduced resolution function  ()  ()  ()  ()  ()  ()  ()  ()
Fixed blanking function        
Channel configuration
(Light interference
prevention function)
       
Center indicator
configuration
 ()  ()  ()  ()  ()  ()  ()  ()
Monitoring function        
 Optical/wire
synchronization system  One-line
system
 Series connection cable
 Unit connection cable
 Unit connection cable (for extension
use) + Extension cable
* The unit connection cable can not be
connected on the upper part of the GL-R.