Omron G9SX series flexible safety unit

Product positioning and certification

Product: Omron G9SX Flexible Safety Unit, used for mechanical safety circuit control

Certification: IEC/EN61508 SIL3, EN ISO13849-1 PLe/Safety Category 4 UL、CSA

Core advantages: logical AND extension, turn off delay, LED diagnosis, high security

Model system and classification

Type, Model, Core Features, Delay Output

Basic unit BC202 has 2 transient safety outputs and 2 auxiliary semiconductor free outputs

Advanced Unit AD322 3 Transient+2 Delay, 1-channel AND Input T15/T150 Semiconductor

Advanced Unit ADA222 3 Transient+2 Delay, 2-channel AND Input T15/T150 Semiconductor

Switching unit GS226 automatic/manual switching, dual safety input T15 semiconductor

Expansion unit EX401 4-channel transient relay output without relay

Expansion unit EX041-T 4-channel delay relay output synchronous host relay

Core functions

Logical AND connection

Up to 4 units can be connected to a single AND output

Cascade up to 5 layers, total number of system units ≤ 20

The longest cable is 100m

Turn off delay function

T15：0~15s， 16 levels adjustable

T150：0~150s， 16 levels adjustable

Set the delay to 0s to convert to transient output

Reset mode

Automatic reset: T32 short circuit+24V

Manual reset: T33 short circuit+24V, pulse reset required

Cross fault detection

Y1/Y2 open circuit: enabled, detect input short circuit

Y1/Y2 connected to+24V: disabled, compatible with safety sensors

fault diagnosis

Indicator lights: PWR (green), T1/T2 (orange), ERR (red), etc

Fault type: input, output, power supply, expansion, AND connection fault

Protection: output lock, alarm output

Electrical specifications

Power supply: 24VDC, range -15%~+10%

Power consumption: BC ≤ 3W, AD/ADA ≤ 4W, EX ≤ 2W, GS ≤ 5W

Safe output

Semiconductor: 0.8A/point, parallel installation with reduced capacity to 0.4A

Relay: 3A/250VAC, 3A/30VDC

response time

Start: ≤ 50ms

Shutdown: ≤ 15ms

Delay accuracy: ± 5%

Wiring length: All input/AND signals ≤ 100m

Wiring and terminals

Power supply: A1 (+24V), A2 (GND)

Safe input: T11/T12, T21/T22 (dual channel)

Reset: T31/T32/T33

AND connection: Input T41/T42, output L1/L2

Safe output: Transient S14-S34, Delay S44/S54

Auxiliary outputs: X1 (monitoring), X2 (fault)

GS specific: Mode M1/M2, External Indication UA/UB

Installation and usage specifications

Installation: DIN rail, leave 25mm around and 50mm up and down for ventilation

Wiring: wire diameter 0.2~2.5mm ², screw torque 0.5N · m

Protection: Inductive load parallel freewheeling diode/surge absorber

Maintenance: Daily functional checks, regular inspections every six months

Typical applications

Parts processing machine: emergency stop, complete machine stop, light curtain partition stop

Machining Center: Multiple safety doors with independent control zones

Semiconductor equipment: shutdown in the corresponding area when the protective cover is opened

Robot System: GS Unit Automatic/Manual Mode Switching Safety

Key questions and answers

Question 1: What is the maximum size and limit of logical AND connections for G9SX?

answer:

Single AND output can connect up to 4 units at most;

Up to 5 layers can be cascaded in series;

The entire system can have up to 20 basic/advanced units;

A single advanced unit can accommodate up to 5 expansion units (EX);

The maximum length of the connecting wire is 100m, and a two core cable or shielded wire must be used.

Question 2: What are the specifications for shutdown delay? How to set up? What will happen if there is a setting error?

answer:

The specifications are divided into two levels: T15 (0-15s, 16 levels) and T150 (0-150s, 16 levels);

Settings: The two dip switches before and after the host must be consistent;

When the delay is 0s, the delay output is converted to a transient safety output;

If the front and rear switches are inconsistent, the unit will report an error and lock the output.

Question 3: What are the differences and applicable scenarios of the automatic/manual switching function of G9SX-GS?

answer:

Automatic switching: If either of the dual safety inputs (A/B) is valid, the output will be valid, suitable for collaborative work between humans and equipment (such as dual light curtain protection);

Manual switching: select A or B input from the mode switch (M1/M2), suitable for normal/maintenance dual-mode switching (such as door switch+limit switch);

Switching response: Mode switching time ≤ 450ms, otherwise an error will be reported;

Output: UA/UB indicates the currently disabled channel, facilitating on-site status confirmation.