User Manual

Technical data
Supply voltage
Operating voltage
The HMI-LED receives power from the
connected controller, via RJ45 connector
(SELV,
security extra low voltage according to HD384)
DC 21..30 V
Power consumption (from connected controller)
Max. 0.48 VA
Display
Type
Segment LED
Functions displayed
– Operating mode
–
Present value display
– Parameter adjustment and setting
I
nterfaces
Type of
interface between controller and HMI-LED
2
-wire interface RS485
Number of HMI-LED connected to a controller
1
Baud rate
9600 bps
Cable connections
Connection terminals
RJ45
Cable type
Standard network cable
Max. distance between HMI-LED and controller
3 m
Housing protection
Protection standard to EN 60529
Protection class
Insulation protection class
IP 54 in front; other IP20
Ambient conditions
IEC 60721-3
Normal operation
Transport
Ambient air conditions
Class 3K3
Class 2K3
Temperature
-20...60 °C
-0...70 °C
Humidity
<85% r.h.
<93% r.h.
Mechanical conditions
Class 3M1
Class 2M2
Industry standards
EU Conformity (CE)
RCM Conformity
CB1T3946xx
*)
CB1T3946en_C1 *)
Dimensions
See Dimensions, page 7
Weight
Excluding packaging
70 g
Communication
Protocol
Standard Modbus RTU
Baud rate
9600 bps
Interface
RJ45 connector
Local service
interface
Tool and HMI cable connection
RJ45
connector, 8 pins,
length of cable<3 m
*)
The documents can be downloaded from http://siemens.com/bt/download.
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Siemens HMI-LED CB1Q3946en
Building Technologies 2016-03-25