Speedfax 2017

For Operation in the Control Cabinet
3RW Soft Starters
Project Planning aids
Main circuit
Control circuit
Possibility 4a: Possibility 4b: Possibility 4:
Inside-delta circuit
Change of direction of rotation for Control by means of PLC
inside-delta circuit
L1
1/N/PE 230 V AC 1) , 50 Hz
F2
+24 V DC
PLC outputs
PLC inputs
M
Start 2)
Reset
PTC type A or
Thermoclick
PE
N
Q11
PE
A1
Motor right
L+ L- IN1 IN2 IN3 IN4
Group error
A2 13 14 23 24 33 34 95 96 98
Switch-on duration No action No action
No action
No action
Trip Reset
T1
+
T2
NSB0_01498b
Soft Starter
Control
1) Permissible values for main and control voltage, see
"Technical specifications".
2) Caution: Risk of restarting!
The start command (e. g. from the PLC) must be reset prior to a reset command
because a new, automatic restart will take place automatically if a
start command is active after the reset command. This applies especially
in case of motor protection tripping.
For safety reasons we recommend incorporating the group error output
(terminals 95 and 96) in the controller.
17 CONTROL
PRODUCTS
Siemens Industry, Inc. SPEEDFAX Product Catalog 17-293