Westpow L1600, User Manual, Page: 10 / 21

5.3.2 External terminal description 5.3.2 External terminal description
Terminal Name Terminal Name Terminal function Terminal function
Explanation Explanation
R.S.T R.S.T
Power Power
Connect to three-phase power
source through breaker (QF) Connect to three-phase power
source through breaker (QF)
U.V.W U.V.W
Motorr Motorr
Connect to three-phase asynchronous
motor
Connect to three-phase asynchronous
motor
Power Power
Start Start
Connect RUN and COM directly, Start Connect RUN and COM directly, Start RUN RUN
Stop Stop
Connect STOP and COM directly free stop Connect STOP and COM directly free stop
STOP STOP
Jog Jog Connect JOG and COM directly, jog Connect JOG and COM directly, jog
JOG JOG
Reset the fault Reset the fault
Connect Reset and COM directly,
reset the fault
Connect Reset and COM directly,
reset the fault
RET RET
D
ig
it
a
l
in
p
u
t
D
ig
it
a
l
in
p
u
t
Common Common Logic Ground Logic Ground
COM COM
K14 K14
K11 K11
K12 K12
NO NO
K24 K24
K22 K22
SS SS
Soft stop Soft stop Connect SS and COM directly, Soft stop Connect SS and COM directly, Soft stop
User Manual User Manual User Manual User Manual
Table 5-1
NC NC
COM COM
NO NO
fault
output
terminals fault
output
terminals
bypass
terminals bypass
terminals
In Fault K14-K12 close
K11-K12 open
contacts capacity AC:5A/250V
DC:10A/30V In Fault K14-K12 close
K11-K12 open
contacts capacity AC:5A/250V
DC:10A/30V
after start complete K24-K22 close
contacts capacity AC:5A/250V
DC:10A/30V after start complete K24-K22 close
contacts capacity AC:5A/250V
DC:10A/30V
6. Control mode and working state 6. Control mode and working state
Connect the terminal SS and COM, the load soft stop, and the stop time is
not adjustable.
There are two wiring of External control. See figure 5-2
Connect the terminal SS and COM, the load soft stop, and the stop time is
not adjustable.
There are two wiring of External control. See figure 5-2
The STRL series soft starter has three start modes: Current Limit, Voltage
Ramp and Jogging. These Start Modes is independent, users can choose
any of them according to the load instance and requirement.
The STRL series soft starter has three start modes: Current Limit, Voltage
Ramp and Jogging. These Start Modes is independent, users can choose
any of them according to the load instance and requirement.
6.1
Voltage Ramp
6.1
Voltage Ramp
The waveform of the voltage shows in Figure 6-1. U
0
in figure is initial
output voltage. When starting, the output voltage is up to U
0
immediately,
and then ramps up gradually according to the parameter Start Time t
set in advance. Then the motor accelerates continuously. When the output
voltage reaches the rate value Ue, the motor reaches the rate speed.
Starting process is finished. The Initial Voltage U
1
and the Start Time t can
be set according to the load. The range of U
0
is 30~100%Ue, and the range
of t is 1~200s.
The waveform of the voltage shows in Figure 6-1. U
0
in figure is initial
output voltage. When starting, the output voltage is up to U
0
immediately,
and then ramps up gradually according to the parameter Start Time t
set in advance. Then the motor accelerates continuously. When the output
voltage reaches the rate value Ue, the motor reaches the rate speed.
Starting process is finished. The Initial Voltage U
1
and the Start Time t can
be set according to the load. The range of U
0
is 30~100%Ue, and the range
of t is 1~200s.
Voltage Ramp start Voltage Ramp start
Ue
U
U
0
t t
1
t
2
t
Figure6-1
I
Ie
t
I
m1
I
m2
I
m3
Figure6-2
Current Limit start Current Limit start
6.2 Current Limit 6.2 Current Limit
At the Current Limit mode, the output voltage increases quickly until the
output current reaches the limited current value Im. See figure 6-2. And
then the output current maintains below this limited value. Then the
output voltage is increased gradually, and the motor accelerate gradually;
when the motor's speed is close to the rated the output current decreases
quickly to the rated value Ie, the starting process is over. The limited
current value can be set according to the load instance. The range of this
parameter is 100%~500%Ie (that is 1~5 times).
At the Current Limit mode, the output voltage increases quickly until the
output current reaches the limited current value Im. See figure 6-2. And
then the output current maintains below this limited value. Then the
output voltage is increased gradually, and the motor accelerate gradually;
when the motor's speed is close to the rated the output current decreases
quickly to the rated value Ie, the starting process is over. The limited
current value can be set according to the load instance. The range of this
parameter is 100%~500%Ie (that is 1~5 times).
11
OPERATION
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10
OPERATION
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