UH 6937
Speed and Frequency Monitor
Description
The UH 6937 allows for speed and frequency monitoring without the use of sensors. As an additional protective measure, the device can be adapted to an application by pressing just a few buttons. With the appropriate wiring, the device can offer the safety functions STO (safe torque off), SOS (safe operation stop), SLS (safely limited speed), SSM (safe speed monitoring) and SSR (safe speed range) in accordance with EN 61800-5-2. And it does all this up to Performance Level (PL) e or Safety Integrity
Level (SIL) 3.
Specifications
Safety rating: SIL 3 Category 4 PL e
Protection rating: IP 40 for housing, IP 20 for terminals
Compliance
EN ISO 13849-1
EN 62061
EN 61800-5-2
IEC 61508
EN 61511
| MODEL NUMBER | VOLTAGE RANGE | OPERATION MODES | FREQUENCY RANGE | SAFETY RATING |
|---|---|---|---|---|
| UH 6937.02 (Standard model) For more part numbers please see technical data |
Single phase voltage 8-280V Three phase voltage 16-690V | Safe Torque Off (STO), Safe Operating Stop (SOS) Safely Limited Speed (SLS), Safe Speed Monitor (SSM) and Safe Speed Range (SSR) | For inverters up to 700Hz or 1200 Hz depending on model | Category 4 PLe SIL 3 |