Omron G9SX Series Manual page 28

Precautions
For details, refer to Precautions for All Relays and Precautions for All Relays with Forcibly Guided Contacts in the Safety Components Group
Catalog (Cat. No. Y106).
!CAUTION
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 D40A and G9SX-NS properly so that supply
voltages or voltages for loads do NOT touch the safety
outputs accidentally.
Serious injury may possibly occur due to damage to
safety outputs.
Provide protective circuits against counter-electromotive
force if inductive loads are connected to safety outputs.
Serious injury may possibly occur due to loss of safety
functions.
Use appropriate devices referring to the information
provided below.
The machine may start operating and may result in
serious injury or death.
Do not put the actuator close to the switch when the door
is open.
Control device
Emergency stop Use approved device with direct opening
switch mechanism complying with IEC/EN 60947-5-1.
Door interlocking Use approved device with direct opening
switch or limit mechanism complying with IEC/EN 60947-5-1
switch and capable of switching micro loads of 24 VDC,
5 mA.
Non-contact Door The G9SX-NS must be used with D40A Non-
Switch contact Door Switches.
Relay with forcibly Use approved devices with forcibly guided
guided contacts contacts complying with EN 50205.
For feedback, use devices with contacts capable
of switching micro loads of 24 VDC, 5 mA.
Contactor Use contactors with forcibly guided mechanism
to input the signal to the Feedback/Reset input of
the G9SX-NS through the NC contact of the
contactor.
For feedback, use devices with contacts capable
of switching micro loads of 24 VDC, 5 mA.
Failure to open contacts of a contactor cannot be
detected by connecting NC contact of the
contactor without a forcibly guided mechanism to
the Feedback/Reset input.
Other devices Evaluate whether devices used are appropriate
to satisfy the requirements of the safety category
level.
28
Compact Non-Contact Door Switch
Requirements
D40A/
■ Precautions for Safe Use
1. Disconnect the G9SX-NS from the power supply when wiring the
D40A.
1. Turn OFF the load power supply before wiring. Failure to do so
may cause electric shock.
2. Devices connected to the product may operate unexpectedly.
2. Do not operate the product in atmospheres containing flammable
or explosive gas. Arcs or heating of relays during switching may
cause fire or explosion.
3. Wire conductors correctly and verify the operation of the product
before using the system in which the product is incorporated.
Incorrect wiring may lead to loss of safety functions.
4. Auxiliary monitoring outputs are NOT safety outputs. Do not use
auxiliary monitoring outputs as safety outputs. Such incorrect use
will cause loss of safety function of D40A and peripheral devices.
5. After installing the D40A, qualified personnel must confirm the
installation, and must conduct test operations and maintenance.
The qualified personnel must be qualified and authorized to
secure safety at each phases of design, installation, running,
maintenance, and disposal of the system.
6. A qualified person in charge, who is familiar with the machine in
which the D40A is to be installed, must conduct and verify the
installation.
7. Be sure to inspect the D40A daily and every 6 months. Otherwise,
serious injury may possibly occur due to system malfunctions.
8. Connect the D40A to only appropriate components or devices
complying with relevant safety standards corresponding to the
required level of safety category. Conformity to requirements of
the safety category must be determined for the entire system. It is
recommended to consult an authorized certification body
regarding assessment of conformity to the required safety level.
9. Do not dismantle, repair, or modify the product. Doing so may
lead to loss of safety functions.
10.Use the G9SX within an enclosure with a IP54 degree of
protection or higher according to IEC/EN 60529.
11.Do not apply DC voltages exceeding the rated voltages, nor any
AC voltages to G9SX-NS@.
12.Use a DC supply satisfying the requirements given below to
prevent electric shock.
• A DC power supply with double or reinforced insulation, for
example, according to IEC/EN 60950 or EN 50178, or a
transformer according to IEC/EN 61558.
• A DC supply satisfying the requirements for class 2 circuits or
limited voltage/current circuits stated in UL 508.
13.Properly apply the specified voltages to the inputs. Applying
inappropriate voltages may cause the product to fail to perform its
specified function, which could lead to the loss of safety functions
or damages to the product.
14.Auxiliary error outputs and auxiliary monitoring outputs are NOT
safety outputs. Do not use these outputs as safety outputs. Such
incorrect use will cause loss of safety functions of the G9SX and
its relevant system. Also logical AND connection outputs can only
be used for logical AND connections with the G9SX-@.
15.After installing the G9SX-NS@, qualified personnel must confirm
the installation, and must conduct test operations and
maintenance. The qualified personnel must be qualified and
authorized to secure safety at each phases of design, installation,
running, maintenance, and disposal of system.
16.A qualified person in charge, who is familiar with the machine in
which G9SX-NS@ is to be installed, must conduct and verify the
installation.
17.Perform daily and 6-month inspections for the G9SX-NS@.
Otherwise, the system may fail to work properly, resulting in
serious injury.
G9SX-NS
Flexible Safety Unit