OVERVIEW

Official designation: Siemens 3TK2810-0BA01 (SIRIUS, Standstill Monitor)

Role/Application: A basic unit safety relay engineered for safe standstill monitoring without external sensors, featuring 3 NO safety contacts and 2 semiconductor signaling outputs for machine protection up to SIL 3 / PL e.

KEY SPECS SUMMARY

Power: 24 V DC (Operating range 0.9 to 1.2 times rated voltage)

Interfaces / Ports: Screw terminals, Measuring inputs up to 690 V AC

Indicators: Refer to the latest manufacturer manual.

Operating Temp: -25 to 60 degrees C (Ambient)

Platform / Compatibility: Standstill monitor, Category 4 / SIL 3 / PL e

Limit: Safety Contacts (EC): 3 NO + 1 NC, Signaling Contacts (SC): 2 semiconductor

Lifecycle: Product Discontinued (Successor is 3SK1111-1AB30)

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the adjustable voltage range used for detecting a standstill condition?

A: The adjustable response value voltage for standstill detection is 20 to 400 mV.

Wiring & Installation:

Q: What are the primary dimensions of the 3TK2810-0BA01 unit for mounting in a control cabinet?

A: The dimensions are 138.5 millimeters high, 45 millimeters wide, and 120 millimeters deep.

Troubleshooting & Compatibility:

Q: Does the 3TK2810-0BA01 support an external start pushbutton for monitored manual restart?

A: No, this basic unit has an automatic start function and does not feature a dedicated start input.

Replacement & Upgrades:

Q: What is the maximum achievable safety integrity level (SIL) and performance level (PL) for this device?

A: The maximum achievable safety rating is SIL 3 according to IEC 61508 and Performance Level e (PL e).