Siemens SIRIUS 3RW44 Manual page 119

8.1.4 3RW44 in a Standard Circuit and DC Braking
to 3RW44 47
Main circuit
1)
L1 3/N/PE 400 V AC , 50 Hz
L2
L3
Q1
(optional
semi-
F3
conductor
protection)
L1 L2
L3
G1
T1 T2 T3
K2 K3
3 3
U1 V1 W1
M1
M
3~
PE
1) For permissible main and control voltage values, refer to Technical Data, pages 9-7 to 9-11.
2)
2) Caution: risk of restart!
The start command (e.g. by the PLC) must be reset before a reset command is issued, since an automatic
restart is executed when a start command is pending after the reset command is issued. This especially
applies to motor protection tripping. For safety reasons it is recommended to integrate the group error output
(terminals 95 and 96) into the control.
3) If the "Combined braking" stopping function is selected, no braking contactor is required.
If the "DC braking" function is selected, a braking contactor must be additionally used.
For types, refer to the "Branch component layout (standard circuit)" table on Page 9-16.
The "DC braking" function is recommended for applications with larger centrifugal masses (J
Output 2 must be set to "DC braking contactor".
4) K4 auxiliary relay, e.g.:
LZX:RT4A4T30 (230 V AC rated control supply voltage),
LZX:RT4A4S15 (115 V AC rated control supply voltage).
SIRIUS 3RW44 manual
GWA 4NEB 535 2195-02 DS 02
Control circuit
L1 1/N/PE 230 V AC
F2
K4 K4
A1
G1
PE
K3 K2
A2
K2 K3
PE
3)
Stopping Function for Device Types 3RW44 26
1)
, 50 Hz
+24 V DC
PLC output
M
L+ L- IN1 IN2
DC braking contactor 3)
13 14 23 24 33
4)
ON period No action
K4
N
Circuit Examples
PLC inputs
PTC type A or
Thermoclick
IN3 IN4 T1 T2
96
+
34 95 98
NSB0_01504
Group error
Load
> J ).
Motor
8-5