NIetz Electric Co.,Ltd
Soft starter SSN/SSA serie User Manual
11
5.2 External terminals explain
表 5-1
Terminal Name
Terminal function
Explanation
Main
circuit
R.S.T Input
Connect to three-phase power source through
breaker (QF)
U.V.W Output Connect to three-phase asynchronous motor
U1.V1.W1
Bypass See figure F-6
Control circuit
Digital input
SS Soft stop Connect SS and COM directly, Soft stop①
RUN Start Connect RUN and COM directly, Start①
STOP stop Connect STOP and COM directly, Stop①
JOG jog Connect JOG and COM directly, jog
RET reset
Connect Reset and COM directly, reset the
fault
COM common Logic Ground
Digital
output
+12V
Internal power supply
terminals
Internal output power supply:
DC12V,100mA
注③
OC Starting end terminals Starting end：OC Conduction
COM common Logic Ground
analog
output
I
4-20Ma output
Load input resistance≤
400Ω
Im=Ie(I-4)/8
COM 4～20mA output reference
Relay output
K14 NO
Fault output
terminals②
In Fault:
K14-K12 close ; K11-K12 open
Contacts capacity
AC:10A/250V
DC:10A/30V；
K11 NC
K12 COM
K24 NO
Bypass
terminals②
Starting end：K24-K22close；K21-K22open
Contacts capacity:
AC:10A/250V 或 5A/380V DC:10A/30V
K21 NC
K22 COM
注①：There are two connecting mode, see figure 5-1
注②：Fault,bypass and starting end output terminals are all dry contact。
注③： In the SSA series product, the end of start output terminal（+12V/OC）are used interior.it
is strictly prohibited to external wiring。
Im：
motor output current（A）
Ie:
motor rate current（A）
I :
4-20mA output current（mA）
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