Sunx SF2-A Series Quick Start Manual

SF2-A
Small Light Curtain
Di a gnosi s
Test input PNP output
Self-diagnosis
type available
Application of IEC 61496 (Type 2) international standard
The SF2-A series conforms to
European and North American safety
standards. So, they can be used in
workplaces throughout the world.
Conforming to
Machine Directive &
Approved Listing
EMC Directive
Europe
CE marking based on Machine Directive
and EMC Directive has been obtained,
so that the sensors can be used in
Control Category 2 equipment.
Type 2 based on IEC 61496-1/2, EN
61496-1 and Control Category 2
based on EN 954-1
North
America
C-UL US listings (UL 61496-1/2) which
are required for use in the United States
and Canada have been obtained.
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Ramco Innovations - 1207 Maple Street, West Des Moines IA USA 50265 - 800-280-6933 - www.ramcoinnovations.com
SERIES
Type 2
High level of safety achieved
The sensor carries out self-diagnosis when it is turned ON.
The monitoring section (CPU) which is inside the emitter constantly checks the
emitting circuit and the control circuit. Furthermore, the receiver also has a
monitoring section (CPU) which constantly checks the receiving circuit, control
circuit and output circuit, so that a high level of safety is maintained at all times.
Safety design of the SF2-A series
• The sensor switches to the lockout mode when an error occurs, so that the OSSD
(control output) and alarm output turn OFF.
• The output circuit is constantly monitored, so that the sensor also locks out if one of the
transistors is short-circuited.
• Self-diagnosis using test input allows detailed checking such as overlapping emission
(overcurrent error), light emission strength, etc.
Emitter
Alarm
Alarm output
output
Control circuit
Check
Monitoring
section (CPU)
Emitting
element failure
Emitting
circuit failure
Cable breakage /
short-circuit
We changed unstable incident beam indicator (orange LED) to stable
incident beam indicator (orange / green LED) from the production in June,
2003.
By this change, you can see more stable state of incident beam at a
glance, and you can align beam axis accurately.
[Operation of stable incident beam indicator (EX-unstable incident beam indicator)]
After modifications
When light received is stable
(Amount of light received more than 140 % approx.)
When light received is stable
(Amount of light received 115 to 140 % approx.)
When light received is unstable
Lights up in orange
(Amount of light received 100 to 115 % approx.)
When light is interrupted
(when OSSD is off)
Bringing world-class
safety standards even
closer to you
Type 2
Standard type
Conforming to
Machine Directive &
EMC Directive
Receiver
Control circuit
Check
Check
Monitoring
section (CPU)
Synchronization line
Receiving
element failure
Receiving
circuit failure
Extraneous light
Stable incident beam indicator
Previous products
Lights up in green Off
Off Off
Lights up in orange
Off Off
Approved Listing
OSSD
Output circuit
(control output)
Check
Test input
Output transistor
failure
CPU malfunction
Cable breakage /
short-circuit