Safety Features; Led Indicators; Tab. 1: Led Displays Of The Tr4 - Sick Tr4 Direct Cylindrical Betriebsanleitung

Operating Instructions
TR4
Tab. 1: LED displays of
the TR4
Ν The LED is
illuminated
constantly.
∏ The LED is flashing.
ν The LED is off.
8014465/YTD7/2016-03-29
Subject to change without notice
Product description
3.2

Safety features

The TR4 safety switch has the following safety features:
• SIL3 according to IEC 61 508
• category 4 according to EN ISO 13 849-1
• PL e according to EN ISO 13 849-1
• type 4 according to EN ISO 14 119
– TR4 Multicoded: low level coded actuator
– TR4 Unique Coded: high level coded actuator
Operational safety
The TR4 safety switch has the following internal protective functions:
• short-circuit protection on all outputs
• overload protection on all outputs
• reverse polarity protection of the operating voltage
3.3

LED indicators

The Status/Diag LED signals the operational status of the TR4.
Display Meaning
ν Off No supply voltage
3 × ∏ Green, Power-up sequence
1 × ∏ Red
Ν Green Actuator inside the response range,
safety outputs active,
application diagnostic output Aux inactive
Ν Red Actuator outside the response range,
safety outputs inactive,
application diagnostic output Aux active
∏ Red or Error. See Tab. 5 "Error displays of the Status/Diag
∏ Green LED" in section 8.3 on page 81.
For further LED displays see Tab. 4 "Error displays of the Status/Diag
LED on the TR4 Unique Coded during teach-in" on page 75 and Tab. 5
"Error displays of the Status/Diag LED" on page 81.
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
en
Chapter 3
59