Siemens SIRIUS System Manual

3RW3 semiconductor motor control unit
SIRIUS System Manual
GWA 4NEB 430 0999-02b
8-33
Diagnostics
Table 8-15: 3RW30/31 diagnostics
8.3.7 Timing diagram
Starting and coasting-
down behavior
The following timing diagram shows the switchover times when the device
is switched on/off:
Figure 8-17: Starting and coasting-down behavior
Malfunction Possible cause Remedy
READY LED off • Supply voltage too low
• Check and adapt the supply
voltage at A1, A2
No reaction to con-
trol input IN
(READY LED on)
• No supply voltage • Check fuses/line contactor
• Phase loss
• Check fuses/line contactor
• Check voltages at L1 to L3
• Wrong cable connected to IN
• Connect to IN as shown in the graphic
of the terminals
• No load • Connect the motor
Start the motor
directly
(BYPASSED LED on)
• The line voltage is switched off
and on in continuous operation
without operation of the con-
trol input IN
• Always switch the line contactor off and
on in conjunction with control input IN
L1-L2-L3
A1-A2
IN
Bypass
T1-T2-T3
U
U
N
S
On-delay approx. 80 ms
ON
command
OFF
command
ON
command
Switchover delay approx. 30 ms
Switchover delay approx. 30 ms
Switchover delay approx. 30 ms

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