Siemens SIRIUS 3RW44 Manual page 118

Circuit Examples
8.1.3 3RW44 in a Standard Circuit and DC Braking
3RW44 22 to 3RW44 25
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 K2 K2
2
V1
U1 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".
8-4
Control circuit
1)
L1 1/N/PE 230 V AC , 50 Hz
+24 V DC
F2
M
A1 L+ L-
G1
PE DC braking contactor
A2 13 14
On period
PE
N
3)
Stopping Function for Device Types
PLC output
2)
Start Reset
K2
IN1 IN2 IN3 IN4
3)
96
23 24 33 34 95
No action
K2
PLC input
PTC type A or
Thermoclick
T1 T2
+
98
NSB0_01502
> J
Load Motor
SIRIUS 3RW44 manual
GWA 4NEB 535 2195-02 DS 02
).