Siemens SIRIUS System Manual

3RP10, 3RP15 solid-state time relays
SIRIUS System Manual
GWA 4NEB 430 0999-02b
7-19
Function diagram
Figure 7-13: 3RP15 55 function diagram
7.3.6 Star-delta function (3RP15 74/76 solid-state time relay)
Description
The instantaneous star contact and the time-delayed delta contact have a
shared contact root.
To avoid phase short circuits, the switchover break from star to delta is
50 ms.
Time ranges
The time relay offers a fixed time range: 20 s, 60 s
Function diagram
Figure 7-14: 3RP15 7. function diagram
7.3.7 Star-delta function with overtravel (3RP15 60 solid-state time relay)
Description
Supply voltage is applied to A./A2 and there is no control signal at B./A2.
This starts the
*d
timing period. By applying the control signal to B./A2,
the idling time (overtravel time) is started. When the set time
t
Idling
(30 s to
600 s) is completed, the output relays (17/16 and 17/28) are reset. If the con-
trol signal is switched off at B./A2 (minimum off-time 270 ms), a new timing
period is started.
Time ranges
Star-delta time 1 s to 20 s
Overtravel time: 30 s to 600 s
Function diagram
Clock pulse generator
CLOCK PULSE
A./A2
15/18
15/16
Idle time
Interval time
Pulse time
Pulse time
Star/delta
STAR/DELTA
A./A2
17/18
17/28
A./A2
17/28
17/16
*
B./A2
17/18
Idling
50 ms
t
t
Star-delta with overtravel
STAR/DELTA with idling

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