Soft Braking - Toshiba ME00070B Manual

8.3 Soft Braking

3 PHASE
SUPPLY
CO NTR OL
SUPPLY
F1
L1 L 2 L3 A1 A2
CONTROL
SUPPLY
FLC SELECT
T3
T1 T2 E I44 I 43
K3 A
K2M K1 M
CO NTACTORS TO BE
MECHANICAL LY
INTERL OCKED
M1
Description:
For high inertia loads that require more braking torque than is available from the D.C.Brake feature, the TMS7 can be configured for 'Soft
Braking'.
In this application the TMS7 is employed with forward run and braking contactors. On receipt of a start signal (pushbutton S1) the TMS7
closes the forward run contactor (K1M) and controls the motor according to the programmed Primary Motor Settings.
On receipt of a stop signal (pushbutton S2) the TMS7 opens the forward run contactor (K1M) and closes the braking contactor (K2M) after a
delay of approximately 2-3 seconds (K1T). K3A is also closed to activate the Secondary Motor Settings which should be user programmed
for the desired stopping performance characteristics.
When motor speed approaches zero the shaft rotation sensor (A2) stops the soft starter and opens the braking contactor (K2M).
Function Settings:
Function 23. Relay Output C Functionality = 0 (Assigns the Trip function to Relay Output C)
-
Functions 1~9 (Sets starting performance characteristics)
-
Functions 80~88 (Sets braking performance characteristics)
-
TMS7 SERIES
THERMISTO R
IN PUT
A3 C1 C2 R11
THERMISTO R
IN PUT RELAY
OUTPUT C
START STO P RESET
I34 I33 I2 2 I 21 I12 I11 R12
K2A S3
K1 A K3A S2
K2T K1T S1 K1 A
K1 M K2M K1A
LEG EN D
A2 SHAFT RO TATION SEN SO R
F1 SEMI -CO NDUCTOR FUSES ( OPTION AL)
K1 A RUN RELAY
K2 A START RELAY
K3 A BRAKE RELAY
K4 A ROTATIO N SENSING REL AY
K4 A A2
K1M K2M K1A K1T
K1 M Y1 K2M Y1
Y2 Y2
K2A K3A K4 A
K1M LINE CONTACTO R ( RUN)
K2M LINE CONTACTO R ( BR AKE)
K1T RUN DEL AY TIMER
K2T BR AKE DELAY TI MER
S1 START PUSHBUTTO N
S2 STOP PU SHBUTTON
S3 RESET PUSHBU TTON
ME00070B
APPLICATION EXAMPLES
CON TRO L
SUPPLY
K2 T
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