Siemens SIRIUS System Manual

3RH, 3TX, LZX coupling links
SIRIUS System Manual
6-4
GWA 4NEB 430 0999-02b
6.2.1 Relay coupling modules versus semiconductor coupling modules
Table 6-3: Comparison: Relay coupling modules and semiconductor coupling modules
Models
Advantages
Disadvantages
• Suitable for direct and alter-
nating voltage
• High switching capacity with-
out heat generation
• Virtually no transfer resis-
tance
(suitable as measured value
transfer switch)
• Electrical isolation
• Safe isolation between con-
tact and coil sides
• No leakage current
• High electromagnetic com-
patibility
• High noise immunity
• Insensitive to overloads and
voltage peaks
• Several switching levels
• Lower switching frequency
• Contact erosion, particularly
in the case of inductive loads
• Inductivity of the coil (distur-
bance)
• Mechanical wear (service life)
• Low direct-current switching
capacity
• Bounce time of the relay con-
tact
• Danger of contact microweld-
ing in the case of capacitive
loads
• No contact welding in the
case of capacitive loads
• High switching frequencies
• High direct-current switching
capacity
• Long service life
• Bounce-free switching
• Insensitive to vibrations and
impact
• Defined transfer resistance
and volume resistance
• Safe isolation between drive
circuit and load in acc. with
DIN VDE 0884
• Silent switching operation
• High temperature rise in the
case of high loads
• Leakage current at output
• Sensitive to peaks in the
power system
• Not suitable as measured
value transfer switch because
of a voltage drop at the
switching transistor
Relay coupling modules
22.5 6.2 mm 17.5 12.5
•
Single-
channel
•1NO/
1W
• Single-
channel
•Multi-
channel
•With/wit-
hout
M-O-A
switch
•1W/1NO/
2NO
• Single-
channel
•Multi-
channel
• Without
switch
•3NO
•Single-
channel
•Multi-
channel
• Without
switch
•2W
Semiconductor coupling modules
12.5
•Single-
channel
• Single-channel
•With M-O-A
switch
• Without
switch
6.2 mm

Siemens SIRIUS Specifications

General

Product brand name	Siemens
Series	SIRIUS
Coil Voltage	24V DC, 110V AC, 230V AC
Switching Capacity	Up to 10A
Mounting Type	DIN rail
Product designation	SIRIUS
Contact Material	Silver alloy
Contact Rating	Varies depending on the specific SIRIUS relay model (e.g., 6 A at 250 V AC, 10 A at 250 V AC)
Switching Voltage	Varies depending on the specific SIRIUS relay model (e.g., 250 V AC, 400 V AC)
Mechanical Life	Up to 10 million operations
Electrical Life	Up to 100, 000 operations
Operating Temperature	-25°C to +55°C
Protection Class	IP20
Size of relay base	Varies depending on the specific SIRIUS relay model