Allen-Bradley 1734-OB8S POINT Guard I/O 8-Point Safety Sourcing Output Module

Brand: Allen-Bradley
Model: 1734OB8S
GEARWELL SKU: GWP-000000021
Category: PLCs & I/O

Key specifications

Safety outputs: 8 current-sourcing, solid-state safety outputs.
Field power supply: 24 V DC nominal; 19.2…28.8 V DC from one SELV/PELV supply limited to 150 VA. For Series A, use 24 V DC maximum and follow 1734-CTM spacing requirements above 40 °C.
Product type: POINT Guard I/O safety sourcing output module
Module reaction time: <6.2 ms; not the complete safety-system response time.
Maximum current per safety output: 1 A at 40 °C; 0.5 A at 55 °C. Observe the temperature derating curve.

POINT I/O 1734 catalog number list (PDF, 111 KB)

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Product overview

The Allen-Bradley 1734-OB8S is a POINT Guard I/O safety output module with 8 current-sourcing outputs rated 1 A each at 40 °C (0.5 A at 55 °C), with short-circuit detection and electronic protection. It is rated up to SIL 3 (IEC 61508) and Category 4/PLe (EN ISO 13849-1) and needs two terminal bases.

Technical reference

Product name	Allen-Bradley 1734-OB8S POINT Guard I/O 8-Point Safety Sourcing Output Module
Brand	Allen-Bradley
Model	1734OB8S
Category	PLCs & I/O
Safety outputs	8 current-sourcing, solid-state safety outputs.
Field power supply	24 V DC nominal; 19.2…28.8 V DC from one SELV/PELV supply limited to 150 VA. For Series A, use 24 V DC maximum and follow 1734-CTM spacing requirements above 40 °C.
Product type	POINT Guard I/O safety sourcing output module
Module reaction time	<6.2 ms; not the complete safety-system response time.
Maximum current per safety output	1 A at 40 °C; 0.5 A at 55 °C. Observe the temperature derating curve.
Lifecycle status	Active
POINTBus current	125 mA maximum at 5 V DC.
Aggregate safety output current	8 A per module (4 A per terminal base) at 40 °C; 2 A per module (1 A per terminal base) at 55 °C. Also limited by the single 150 VA SELV/PELV supply; both power and temperature limits apply.
Field-to-system isolation	50 V continuous, basic insulation between field side and system; no isolation between individual channels.
Product description	Eight current-sourcing safety outputs for POINT Guard I/O systems; output loading is limited by temperature and field-supply power.