45
G9SX/G9SX-GS
Safety Precautions
Be sure to read the Common Precautions for Safety Warning at the following URL: http://www.ia.omron.com/.
Indication and Meaning for Safe Use
!WARNING
<Precautions for All G9SX Models>
<G9SX-GS@>
Indicates a potentially hazardous situation
which, if not avoided, will result in minor
or moderate injury, or may result in
serious injury or death. Additionally there
may be significant property damage.
Precautions
for Safe Use
Supplementary comments on what to do
or avoid doing, to use the product safely.
Precautions
for Correct
Use
Supplementary comments on what to do
or avoid doing, to prevent failure to
operate, or undesirable effect on product
performance.
Serious injury may possibly occur due to breakdown of
safety outputs.
Do not connect loads beyond the rated value to the safety
outputs.
Serious injury may possibly occur due to loss of required
safety functions.
Wire the G9SX properly so that the safety outputs do not
short-circuit with the Unit power supply or load power supply.
Serious injury may possibly occur due to malfunction of
safety outputs.
Add a circuit to protect against back electromotive force
when connecting inductive loads to safety outputs.
Serious injury may possibly occur due to loss of safety
functions. Use appropriate devices as given in the
following table.
Control Devices Requirements
Door interlocking switches
or Safety limit switches
Use approved devices with Direct
Opening Mechanism complying with
IEC/EN 60947-5-1 and capable of
switching micro loads of 24 VDC, 5 mA.
Safety sensors
Use approved devices complying with
the relevant product standards,
regulations and rules in the country
where it is used.
Consult a certification body to assess
that the entire system satisfies the
required safety category level.
Relays with forcibly guided
contacts
Use approved devices with forcibly
guided contacts complying with EN
50205 (IEC/EN61810-3) . For feedback
purpose use devices with contacts
capable of switching micro loads of 24
VDC, 5 mA.
Contactors
Use approved devices complying with
IEC/EN 60947-4-1 auxiliary contact linked
with power contact (mirror contact).
For feedback purpose use devices with
contacts capable of switching micro
loads of 24 VDC, 5 mA.
Emergency stop switches
Use approved devices with Direct
Opening Mechanism complying with
IEC/EN 60947-5-1
Do not connect an emergency stop
switch to the G9SX-GS
@
.
Other devices
Evaluate whether devices used are
appropriate to satisfy the requirements of
safety category level.
Serious injury may possibly occur due to loss of safety functions.
Construct an appropriate safety system as shown in the
following table.
Switching
function
Auto switching
Safety
system
configuration
example
Safety
precautions
1. Select Safety Sensors that satisfy the following
condition:
Diameter of the smallest detectable object <
Diameter of the object to be detected
2. Install the Safety Sensors so that they satisfy the
following conditions:
(1)Use Safety Sensor A to detect the entry of the
machine into area A, and Safety Sensor B to
detect the entry of a person into area A.
(2)Make sure that the machine can reach area A
only by passing through Safety Sensor A, and
that a person can reach area A only by
passing through Safety Sensor B.
3. Provide a protective structure to prevent a
person from passing completely through Safety
Sensor B and stepping into area A. If this is not
possible, install a sensor that will detect the
presence of a person inside area A and prevent
the machine from being restarted while the
person is inside area A.
4. Provide a sufficient safety distance (S1)
considering the entry speed of a person and a
sufficient safety distance (S2) considering the
entry speed of the machine. For details, refer to
“Safety Distance” on page 46.
Switching
function
Manual switching
Safety
system
configuration
example
Safety
precautions
1. Select Safety Sensors that satisfy the following
condition:
Diameter of the smallest detectable object <
Diameter of the object to be detected
2. Install the Safety Sensors so that they satisfy the
following conditions:
(1)Use the Safety Sensor to detect the entry of
the machine into area A.
(2)Make sure that the machine can reach area A
only by passing through the Safety Sensor.
3. Provide a protective structure to prevent a
person from stepping into area A when the door
is opened. If this is not possible, install a sensor
that will detect the presence of a person inside
area A and prevent the machine from being
restarted while the person is inside area A.
4. Provide a sufficient safety distance (S2)
considering the entry speed of the machine.
For details, refer to “Safety Distance” on page 46.
5. Position the mode selector in a location where it
cannot be operated from inside area A.
Person
Machine
Safety Sensor A
Safety Sensor B
Area A
Machine
Person
Area A
Mode
selector
Safety Sensor
Safety Door Switch
Safety Limit Switch
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