Safety Precautions; Precautions For Correct Use; Applicable Safety Category; Mounting Multiple Units - Omron G9SA Series Manual

Safety Precautions

Refer to the "Precautions for All Relays" and "Precautions for All Relays with Forcibly Guided Contacts".
!CAUTION
Turn OFF the G9SA before wiring the G9SA. Do not touch
the terminals of the G9SA while the power is turned ON,
because the terminals are charged and may cause an
electric shock.

■ Precautions for Correct Use

Installation
• The G9SA can be installed in any direction.
Wiring
• Use the following to wire the G9SA.
Stranded wire: 0.75 to 1.5 mm
Solid wire: 1.0 to 1.5 mm
• Tighten each screw to a torque of 0.78 to 1.18 N·m, or the G9SA
may malfunction or generate heat.
• External inputs connected to T11 and T12 or T21 and T22 must be
no-voltage contact inputs.
• PE is a ground terminal.
When a machine is grounded at the positive, the PE terminal
should not be grounded.
Connector Cover
• Do not remove the connector cover of the G9SA-301, G9SA-501,
G9SA-321-T@, or G9SA-TH301 unless an Expansion Unit is being
used.
Mounting Expansion Units
• Turn OFF the G9SA before connecting the Expansion Unit.
• When an Expansion Unit is being used, remove the connector
cover from the G9SA Safety Relay Unit (G9SA-301, G9SA-501,
G9SA-321-T@, or G9SA-TH301) and insert the connector of the
Expansion Unit's connector cable.

■ Applicable Safety Category

(EN954-1)
G9SA-series Relays meet the requirements of Safety Category 4 of
the EN954-1 standards when they are used as shown in the
examples provided by OMRON. The Relays may not meet the
standards in some operating conditions. The OFF-delay output of
models G9SA-321-T@ and EX031-T@, however, conform to Safety
Category 3.
The applicable safety category is determined from the whole safety
control system. Make sure that the whole safety control system
meets EN954-1 requirements.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. J121-E1-06
http://www.ia.omron.com/
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In the interest of product improvement, specifications are subject to change without notice.

Mounting Multiple Units

• When mounting multiple Units close to each other, the rated current
will be 3 A. Do not apply a current higher than 3 A.
Connecting Inputs
• If using multiple G9SA models, inputs cannot be made using the
same switch. This is also true for other input terminals.
T11 T12
G9SA
Ground Shorts
• A positive thermistor (TH) is built into the G9SA internal circuit to
detect ground shorts and shorts between channels 1 and 2. When
such faults are detected, the safety outputs are interrupted. If the
short breakdown is repaired, the G9SA automatically recovers.
Resetting Inputs
• When only channel 1 of the 2-channel input turns OFF, the safety
output is interrupted. In order to restart when this happens, it is
necessary to turn OFF and ON both input channels. It is not
possible to restart by resetting only channel 1.
Resetting Inputs During OFF Delay
Time
The G9SA-321-T@ operates as follows according to the reset mode
when the inputs are to be re-entered during the OFF delay time of
the G9SA-321-T@:
For auto reset, after the OFF delay time has ended, the outputs will
turn OFF, and then the outputs will turn ON again.
For manual reset, after the OFF delay time has ended, the outputs
will turn OFF, and then the outputs will turn ON again when the reset
is input.
■ Certified Standards
The G9SA-301/501/321-T@/TH301/EX301/EX031-T@ conform to
the following standards.
• EN standards, certified by BG:
EN954-1
EN60204-1
EN574 (G9SA-TH301 only)
• Conformance to EMC (Electromagnetic Compatibility)
Certified by TÜV Product Service: G9SA (-TH301) 24 V AC/DC
Certified by TÜV Rheinland:
EMI (Emission):
EMS (Immunity):
• UL standards: UL508 (Industrial Control Equipment)
• CSA standards: CSA C22.2 No. 14 (Industrial Control Equipment)
(c)Copyright OMRON Corporation 2007 All Rights Reserved.
G9SA
T11 T12
G9SA
G9SA-EX301/EX031-T@
G9SA (-TH301) 100-240 V AC
EN55011 Group 1 Class A
EN61000-6-2
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