3RT, 3TB, 3TF Contactors for Switching Motors
3RT10 contactors, 3-pole, 3 ... 250 kW
Control circuit:
$ Solid-state module of
L1/L+
N/L-
3RT1 ...-.Q contactor
• Contactor control through AS-Interface by way of terminals
AS-i +/AS-i –. Each of these terminals is jumpered and
connected twice to a 4-pole connector which is separate from
the other control inputs.
2
A1 A2
% Plug-in connection, 6-pole
& Plug-in connection, 4-pole
S2
H1
H2
H3
S1
Advantages:
S1 Selector switch for switching
from automatic control,
e.g. by means of AS-Interface,
to local control
e.g.
Overload relay
3RB20
SF1
SF2
AS-i
AS-i
AS-i
AS-i
- The AS-Interface cable is not interrupted if the connector is
pulled out
AS-i
- The contactor remains functional through the local control
inputs and its own 6-pole connector
S1 open: Automatic mode
• Control signals through AS-i:
- Contactor ON/OFF
NSB0_01149b
S2 Local control option
1
3
• Status signals through AS-i:
- Contactor ON/OFF
Possibility of switching from automatic control to local control by
means of terminals H1/H2/H3, i.e. automatic control through
AS-Interface can be deactivated e.g. during startup or in the
event of a fault and the contactor can be controlled manually.
- Automatic/Local control:
- Remaining lifetime (RLT)
- Signal through free input, e.g. overload relay tripped.
I/O configuration (hex)
ID code (hex)
7
F
Power supply
V
26.5 ... 31.6 (according to AS-Interface specification)
AS-Interface current input
Contact loading at SF1/2
mA
mA
max. 20
3 ... 6
Watchdog function (disconnects outputs in the event of AS-Interface fault)
Built-in
LED
States
On
Description of state
Indication behavior
AS-Interface
On
Flashing Flashing
During operation, the LEDs on
the contactor indicate the
states shown on the right.
Station address 0
No AS-Interface communication
AS-Interface communication OK
Contactor diagnostics using the application program
• Inputs
•Outputs
Input signals
Device status
Output signals
Device status
DI0
"Ready"
0
1
0
1
0
1
0
1
Device not ready/manual operation
Device ready/automatic operation
Contactor off
DO0
DO1
DO2
DO3
"Running"
0
1
0
1
0
1
0
1
Contactor off
Contactor on
DI1
DI2
DI3
"Running"
--
--
--
--
--
--
Contactor on
"Remaining lifetime"
"Free input"
Remaining lifetime RLT > 20 %
Remaining lifetime RLT 20 %
No input signal at SF1/2
Input signal at SF1/2
Siemens LV 1 · 2006
3/11
SIEMENS [ Siemens Semiconductor Group ]
