ATA SA-7 Series User manual

品/质/成/就/卓/越/创/新/引/领/未/来
ATA SA-7 系列
全数字交流电机软起动器
操作手册
ATA SA-7 Series AC motor
Soft Starter Instrucitions
技术优秀 产品优质 管理优化 服务优良
产品技术标准 : Q/ADYS001-2019 质量体系标准 : IS09001/GB19001

ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series Fully Digital AC motor Soft Starter
注意事项 Notes
感谢您选择奥托 ATA SA-7 系列智能化软起动产品，我们将以优异的产品性能回报您的厚
爱！您在进行安装、操作、维护之前，必须注意以下事项。
Thanks for your choice of the ATA SA-7 intelligent Soft-starter of ATA,we will
respond your choice with excellence product performance.Before installation,
operation, and maintenance, pay attention to the following precautions.
•安装前请务必详细阅读本操作守则。
Please read this operation manual before installation.
•有专业技术人员允许安装本软起动器。
Only professional technical staff allowed to install this soft-starter.
•必须让电动机的规格与本软起动器相匹配。
Make sure this soft-starter matches the specification(U,V,W)of the soft-starter.
•严禁在软起动器输出端 (U、V、W) 接电容器。
Capacitor can't be connected to output terminal(U,V,W).
• 严禁将输入端 (R、S、T) 接到输出端 (U,V,W)。
The input terminal(R、S、T)can't be connected to output terminal(U,V,W).
•软起动器安装后将输入和输出端的裸露部分用绝缘胶带包好。
The bareness part of input and output terminal must be enwrapped by insulating
tape after the soft-starter installation.
• 软起动器应牢固接地。
The soft-starter must be earthed hard.
•设备维修时必须切断输入电源。
The input power must be shut when the equipment be maintained.
•不得私自拆装、改装、维修本产品。
Prohibit to install, modify or repair the soft-starter without our permission.
•产品报废时，请作为工业废弃物进行处理。
When the soft-starter is discard as useless,please handle as industrial castoff.
•严禁用兆欧表测试软起动器主回路和控制回路。
Prohibit to test the main circuit and control circuit of the soft-starter with
meg-ohmmeter.
注意事项 Notes
注意事项 Notes

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ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
● 当搬运产品时请正确使用搬运工具以防止损坏。
Use the handling tools correctly to prevent damage when handling the product.
● 软起动器堆叠层数不要高于 5 层以上。
The number of soft starter stacks should not be higher than 5.
● 请不要在产品上堆放重物。
Please do not stack heavy objects on the product.
● 检查软起动器安装方向是否正确。
Inspect that the soft starter is installed in the correct direction.
● 装配过程中防止螺丝、电缆碎片等其他导电物体及油类可燃物体进入软起动器。
During the assembly process, other conductive object and oil combustible
bodies such as screws and cable fragments are prevented from entering the soft
starter.
其他注意事项 Others
注意事项 Notes

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ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
目 录
Contents
1 概述 Introduction
1.1 ATA SA-7系列软起动器的主要作用 Main purpose 1
1.2 ATA SA-7系列软起动器的主要特点 Main characteristics 2
2 开箱检查 Unpacking inspection
2.1 开箱检查步骤 Unpacking inspection procedure 3
3 使用环境及安装 Use condition and installation
3.1 使用环境 Use condition 4
3.2 安装要求 Installation requirements 5
3.3 外型与安装尺寸 dimension 5
4 工作原理及接线 Working principle and connecting
4.1 ATA SA-7 软起动器的工作原理 Working principle 8
4.2 ATA SA-7 软起动器的基本接线图 connectiondiagram 9
4.3 输出特性 Output characteristic 10
5 操作与显示 Operation and display
5.1 显示屏 Viewing screen 16
5.2 参数设置 Parameters setup 18
5.3 可编程继电输出功能 The output function of programming relay 20
6 试运行与应用 Trial run and application
6.1 通电试运行 Trial Run 22
6.2 应用举例 Applications 23
目录 Contents

Page 1
ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
ATA SA-7 系列智能型电机软起动器是融合了电力电子技术、双 CPU 技术和最新的电机控
制理论的新型设备。可广泛应用于风机、水泵、压缩机及球磨机等负载，是早期用于电动机起
动的星 / 三角转换、自耦降压、磁控降压等降压起动设备的理想替代产品。其性能不是其它普
通软起动器能比拟的。
ATA SA-7 series intelligent soft-starter is a new generation equipment with electric
power technology,double-CPU technology and new motor control theory,which can
be widely applied to different loads such as fans,water pumps,compressors,ball mills
and etc.This soft-starter is a ideal alternative for the traditional start equipment such as
Y- △ ,step-down autotransformer,magnetron soft-starter and etc.
1.1 ATA SA-7 系列软起动器的主要作用
1.1 Main functions of ATA SA-7 soft starter
第一：有效降低了电动机的起动电流；可减少配电容量，避免电网增容投资。
First: Efficiently reduce the start current of the motor, can reduce the distribution
capacity and the investment for additional capacity of power grid.
第二：减小了电动机及负载设备的起动应力；延长了电动机及相关设备的使用寿命。
Second: Reduce the start-up stress of the motor,prolong the life of the motor and
related equipment.
第三：自适用的起动模式；自动调节起动曲线以适用复杂的电机和负载情况，达到完美的起动
效果。
Third:Self-adapting start mode:can self adjust the start curve for different motors and
loads.
第四：具有完善可靠的保护功能；有效地保护了电动机及相关生产设备的使用安全。
Fourth: Reliable protection:can efficiently protect the motor and related product
equipment.
第五：先进的电子技术使该产品完全智能化，网络化，经济化。
Fifth：Advancedelectronic technology to make the product fully intelligent,network-
based, economy-based.
1 概 述 Introduction
1- 概述 Introduction

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ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
1.2 ATA SA-7 系列软起动器的主要特点
1.2 Main Features of ATA Soft Starter
第一：双 CPU 结构，相互冗余的可靠性设计，是传统的单 CPU 结构无法比拟的。
First: Double-CPU configuration,with reliable redundancy design,must better than
traditional single-CPU configuration.
第二：起动过程采用自适用智能化控制，避免了烦琐的曲线选择，自动控制电机达到最佳起动
性能。
Second: Adopt self-adapting intelligent control in start process,avoid complete
selection of curves,to make the motor achieve the perfect start performance.
第三：对输入电源无相序要求。
Third:There is no phase request for input power.
第四：完善可靠的保护功能：过热、缺相、欠压、起动过流、运行过载、三相不平衡等保护。
Fourth:Perfect and reliable protection: overheat, phase lack, under voltage, overload,
3-phase imbalance and etc.
第五：独特的紧凑内部结构设计，特别方便用户集成到已有系统中，为用户节约了旁路接触器
的费用。
Fifth：The unique compact internal structure is designed to facilitate user integration
into existing systems, The cost of bypass contactor is saved.
1- 概述 Introduction

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ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
每台 ATA SA-7 软起动器在出厂前均进行了严格的检验和性能测试。用户在收到产品并拆
封后，请按下列步骤检查，如发现有问题，请及时与供货商联系。
All the soft-starter have been tested strictly before leaving factory.When users
receive the product,please follow the steps to check it after unpacking,if find any
problem,please contact us immediately.
2.1 开箱检查步骤
2.1 Unpacking inspection steps
(1) 检查产品型号。
Check the product model
(2) 核对产品外壳上的规格标牌，确认您收到的货物与您订购的产品相符。
Indentify the specification label in curst, make sure that the product is what you have
order.
2 开箱检查 Unpacking inspection
2- 开箱检查 Unpacking inspection
ATA SA - 7 -
异步电机半导体软起动控制器（简称软起动器）
Ac motor soft starter（Abbreviated as soft starter）
Design Serial Number
Power
Specication
设计序列号
功率规格
8
11
15
.....
700
800
中文名称：电机软起动器
产品型号：ATA SA-7-**
使用类型：******
额定电流：**A
产品编号：********
生产日期：20** 年 ** 月
使用标准：GB/T 14048.6-2016
输入电压：三相 50/60Hz/AC380V
输出电压：三相 50/60Hz/AC380V
输出功率：**kW
长沙奥托自动化技术有限公司
网 址：www.atawindow.com

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ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
3.1 使用环境
3.1 Use condition
使用条件对软起动器的正常使用及寿命有显著影响，因此请将软起动器安装在符合下列使
用条件的场所。
The use condition have the marked infection for the natural using.please install
the soft-starter in the adapted location for the follow conditions.
3.1.1 本产品的使用条件
3.1.1 Use environment
主回路电源：三相 AC 380V ±15%，50Hz/60Hz
Power for main circuit power:3 phase AC380V±15%,50Hz or 60Hz
适配电机：鼠笼式异步电动机（其他电机请标明）
Adapt motor:Squirrel-cage asynchronous motor(please note for other motors)
控制回路电源： AC 220V（+10%、-15%），50/60Hz
Power for control circuit: AC 220V（+10%、-15%），50/60Hz.
工作方式：短时工作制
Work mode:Short-term work system
冷却方式：自然冷却
Cooling method: natural cooling
防护等级：IP20
Protection level: IP20
环境条件：环境温度：-25~+40℃
Environmental conditions:Ambient temperature: -25~+40℃
3- 使用环境及安装 Use condition & installation
NAME：SOFT STARTER
MODEL：ATA SA-7-**
USE TYPE : ******
RATED CURRENT：**A
S N：********
DARE：20**Y**M
STANDARD：GB/T 14048.6-2016
INPUT VOLTAGE：3. PHAES 50/60Hz/AC380V
OUTPIT VOLTAGE：3. PHAES 50/60Hz/AC380V
OUTPIT POWER：**kW
CHANGSHA ATA AUTOMATION CO.,LTD.
URL：www.atawindow.com
3 使用环境及安装 Use condition & installation

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ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
3- 使用环境及安装 Use condition & installation
相对湿度：90%RH 以下，不结露
Relative humidity: ≤ 90%RH, Non-condensing.
海拔高度：≤ 2000m（大于 2000 米可降容选型）
Altitude: Suitable for operating at an altitude of less than 2000m;otherwise,the power
grade of its adapted motor should be degraded.
安装场所：柜内安装（无导电尘埃、无易燃、易爆、易腐蚀性气体，震动小于 0.5G 的场所）。
Installation sites:Install in cabinet(without conductive, flammability, explosive, causticity
dust, shaking under 0.5G).
3.2 安装要求
3.2 Installation requirements
ATA SA-7 系列软起动器的安装方式为壁挂式。冷却方式为为自然冷却方式，为了有利于
设备的通风及散热，软起动器应垂直安装，并在设备上留有足够的散热空间。
ATA SA-7 series soft-starter is wall-mounted.Cause of the natural cooling
method,it should be installed perpendicularly for aeration and cooling.
3.3 外型与安装尺寸
3.3 dimension

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ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
3- 使用环境及安装 Use condition & installation
ATA SA-7 系列软起动器 安装尺寸 外形尺寸 安装孔
ATA SA-7 series soft-
starter Installation dimension Outline size Mounting hole
外型
Appearance
功率
Power H1 W1 H W D K
A8-55 213 120 241 165 144.7 6
图 3.1
标准型软起动器电气规格。
The electric specification of ATA SA-7 standard type soft-starter.
项 目 Item 技 术 指 标 Technical Parameter
主回路
Main Circuit
功率器件
Power component
可控硅模块 / 普通可控硅
SCR module/SCR
主回路电源
Main circuit power
三相 380V+10%-15%，50/60Hz
3-phase AC380V+10%~-15%,50/60Hz
主回路功耗
Main circuit consume Power
＜每相每安培 2W
＜ 2W/A in single phase
功率器件电压
Voltage of Power component ≥ 1400V
dv/dt 保护
dv/dt protection
阻容滤波回路，压敏电阻
RC lter circuit, varistor
控制回路
Control circuit
控制回路电压
Control voltage AC 220V（+10%、-15%），50/60Hz
控制回路功耗
Consume power of control circuit 5W
起动指令
Start indication
无源触点，键盘，计算机指令
Passive contact, keyboard, PC indication
起动参数
Start parameter
起动方式
Start mode
斜坡起动，突跳起动，恒流起动
Current slope, current-limit, voltage slope
起始电压
Initial voltage
30%~90%( 系统电压 )
30%~90%(system voltage)
起动时间
Start time 5~120s
突跳时间
Snap-jump time 0~3s
停车
Stop
自由停车
Natural stop
故障保护
Protection
电源故障保护
Protection for power supply
缺相、欠压、过压
Phase lack, under voltage, over voltage
设备故障保护
Protection for equipment
过热、电机过载、电机缺相、起动超时等
Overheat, overload, over current,overtime of
starting and etc.

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ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
项 目 Item 技 术 指 标 Technical Parameter
在线监测
Online
monitoring
显示
Display
起动、运行状态和起动、运行电流及电压
Start, run status and start, running current and
voltage
辅助输出
Assistant output
terminal
故障输出
Fault output
常开继电触点，AC250V/2A
NO contact
运行输出
Running output 常开继电触点，AC250V/2A
电流输出
Current signal output
4~20mA 或 0~20mA 标准信号
4~20mAor 0~20mA ,standard signal
辅助输入
Assistant input
terminal
公共端子 COM
无源触点接入或短接，不能直接引入外部电源。
Passive contact access or short connection,
can not be directly introduced into the external
power supply.
逻辑输入 1 LI1
逻辑输入 2 LI2
起动端子 START
停止端子 STOP
可编程逻辑输出
Programmable
logical output
LO+ 电源逻辑输出
Power logic output
连接至 +24V 或 +12V 50mA
Connect to +24V or +12V 50mA
可根据需要定义不同状态
Can be dened with different
requirement.
LO1
可编程逻辑输出 1
Programmable logic
output 1
LO2
可编程逻辑输出 2
Programmable logic
output 2
数字通讯
Communication
通讯接口
Communication terminal RS485
环境条件
Enviroment
condition
运行温度
Running temperature -5~+40℃
储存温度
Memory temperature -25~+55℃
相对湿度
Relative humidity 20~90%，不结露 Non condensation
海拔高度
Height above sea level
<2 000m，额定值不变
<2 000m,rated value
>2 000m，额定值 -5%/100m
>2 000m,increase capacity 5% per 100m
其他
Others
外壳防护等级
Defend level of crust IP20
产品技术标准
Technical standard GB 14048.6-2016
3- 使用环境及安装 Use condition & installation

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ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
ATA SA-7 软起动器的额定功率消耗
Rated power consumption for the ATA SA-7 soft starter.
功率规格 kW
Power
specication
815 22 30 37 45 55
额定电流 A
Rated current 15 30 44 60 74 90 110
功率消耗 W
Power
consumption
68 135 200 270 330 400 500
4- 工作原理及接线 Working principle & connecting
4 工作原理及接线 Working principle & connecting
4.1 ATA SA-7 软起动器的工作原理
4.1 Working principle of ATA SA-7 soft starter
ATA SA-7 电动机软起动器采用两对反并联的晶闸管串接于交流电动机的定子回路上。利
用晶闸管的电子开关作用，通过微处理器控制其触发角的变化来改变晶闸管的开通程度，由此
来改变电动机输入电压大小，以达到控制电动机软起动目的。当起动完成后，软起动输出达到
额定电压。这时将自动控制旁路继电器吸合，将电动机投入电网运行。
The ATA SA-7 soft-starter has 2 pairs of inverted shunt-wound SCR which
connected to the stator circuit of the AC motors.By controlling the switching on of
SCR trigger gate changes the input voltage of motors. When soft-starter finished
soft starting,its output voltage is reaching its rated value,and bypass contactor
automatically closed,then motor is running.

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ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
4.2 ATA SA-7 软起动器的基本接线图理
4.2 connectiondiagram of ATA SA-7 soft starter
端子说明 External terminal information
端子编号
Terminal No
端子名称
Terminal Name
说 明
Explanation
主回路
Main
circuit
R、S、T 交流电源输入
AC Power input
由断路器 (QF) 接三相交流电源
Connect Breaker with 3 Phase AC Power
R1、S1、T1 交流电源输出
AC Power output
接至三相交流接触器
Connect to 3. Phase AC contactor
U、V、W 交流电源输出
AC Power output
接至三相交流异步电动机
Connect to 3. Phase AC asynchronous motor
控制
回路
Control
loops
故障输出
( 无源触点 )
Failure state
output(potential-
freecontact)
K1A
常开触点 NO
contact
故障时，K1A、K1C 触点闭合
触点容量为：5A/250V AC
Terminal K1A、K1C close during fault.
Terminal Power：5A/250V AC.
K1C
运行输出
( 无源触点 )
Running state
output(potential-
freecontact)
K2A
常开触点 NO
contact
运行时，K2A、K2C 触点闭合
触点容量为：5A/250V AC
Terminal K2A、K2C close during running.
Terminal Power：5A/250V AC.
K2C
4- 工作原理及接线 Working principle & connecting

Page 10
ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
4.3 ATA SA-7 软起动器的输出特性
4.3 Output characteristic of ATA SA-7 soft starter
● 起始电压 Us Initial voltage Us
初始阶段软起动对电机所加电压。在起动过程中，电机的输出力矩随电压增加。当软起动
器的输出电压较小时，电机力矩小于负载的静摩擦力矩，不能使负载转动。随着输出电压的不
断增大，电机力矩克服了负载的静摩擦力矩和惯量，使负载开始转动。
The voltage is added to motor by soft-starter during initial status. During the
process of starting, the output torque of the motor become bigger and bigger as the
input voltage rises. The torque of the motor is smaller than the load s static friction
moment and cannot drive the load running when the output voltage of the soft starter
is small at the beginning. With the increasing of the output voltage of the starter, the
output torque of the motor overcomes the static friction moment and inertia, and then
the load begins to running.
ATA SA-7 软起动器在起动时提供一个起始电压 Us，将 Us 调节到合适的值，可在起动时
使负载立即开始转动。
The ATA SA-7 soft-start provides a initial voltage Us. The load can run immediately
at the start time if the setup of Us is suitable.
控制
回路
Control
loops
可编程逻辑
输出
Programmable
logical output
LO+ 电源逻辑输出
Power logic output 连接至 +24V 或 +12V 50mA
Connect to +24V or +12V 50mA
可根据需要定义不同状态
Can be dened with different
requirement.
LO1
可编程逻辑输出 1
Programmable logic
output 1
LO2
可编程逻辑输出 2
Programmable logic
output 2
起停控制
( 有源触点 )
Starting/Stopping
control
(active contact)
START 起动 START COM、START 触点 : 起动
Terminal COM、START : Start
COM、STOP 触点 : 瞬停
STOP 停止 STOP
LI1 逻辑输入 1
Logic input 1 Terminal COM、STOP : Instant-stop
无源触点闭合或断开，不能直接引入外部电源。
The passive contact is closed or
disconnected and cannot be directly
connected to the external power supply.
LI2 逻辑输入 2
Logic input 2
COM 公共端 COM
模拟信号输出
Analog signal
output
I+ 信号输出 IOUT 0 ～ 20mA 或 4 ～ 20mA 模拟信号输出
0 ～ 20mA or 4 ～ 20mA Analog signal
output
I- 地线 GND
通信接口
（RS-485）
Communication
interface
(RS-485)
通讯接口
Communication terminal
RS-485 接口
RS-485
4- 工作原理及接线 Working principle & connecting

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ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
起始电压 Us 由参数设置。
The initial voltage Us can be set by parameters.
● 达速电压 Voltage up to speed
输出电压从 Us 开始按一定的斜率上升，电机不断加速。当输出电压达到 UR 时，电机也
基本达到额定转速，UR 就称为达速电压。
The output voltage of the soft-starter with a certain slop from Us, and the motor
accelerates continuously. When the output voltage of the soft-starter reaches UR, the
rotational speed of the motor almost reaches its rated value. UR is called accelerating
voltage. During the process of starting.
ATA SA-7 软起动器在起动过程中自动监测达速电压，当电机达到额定转速时切换到运行
状态。对于不同的负载，达速电压的数值可能不同。
The ATA SA-7 soft-starter monitors the accelerating speed voltage automatically.
As soon as the output voltage reaches UR, he starter switches to the running status. UR
probably has different values according to different loads.
● 起动时间 Ts Start time
起动时间 TS 指输出电压从 0V 上升到 380V 所需的时间，也即输出电压在 US 与 UR 之间
的斜率。电机的实际起动时间与负载大小有关，正常情况下应小于起动时间 TS。
The start time denotes the required time that output voltage rises from 0V to
380V,and also means the output voltage slope between Us and UR. The actual start
time of the motor is decided on load, while commonly shorter than the Ts .
起动时间 TS 由键盘设置。
Starting time is set by keyboard.
● 突跳时间 TJSnap jump time
对于高转矩负载，软起动器在初始起动阶段提供一个时间为 TJ 的全导通阶段，输出额定电
压，使电机能迅速克服负载的静摩擦力矩和惯量开始转动，称为突跳起动。
For large-torque load, the soft-starter provides an all-conduct connecting stage
what needs time TJ. In the stage, the soft-starter outputs a rated voltage. Thus the
motor can overcome the static friction moment and inertia of the load easily, and
begins to running quickly. This start status is called snap jump start.
4- 工作原理及接线 Working principle & connecting

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ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
突跳时间 TJ 由键盘设置。
The snap jump time TJ can be by keyboard.
● 控制方式 Work mode
电压斜坡模式：电压斜坡控制由二个基本参数起始电压 US 和起动时间 TS 组成，当电机
起动时，软起动器开始输出起始电压 US，此后电压沿一给定斜率，经过给定的起动时间 TS（根
据负载大小，自动调节起动过程），到达额定电压 Ue。
The voltage slope is composed of two parameters: initial voltage Us and Start time
Ts; When the motor starts working, soft-starter outputs initial voltage Us ,according
to the load power, and along with a set slope, initial voltage Us adjusts the starting
process automatically, the reaches a rated voltage Ue via a set Start time Ts.
● 突跳 + 电压斜坡模式 Snap jump with voltage slop mode
对于高转矩负载，软起动器在初始起动阶段提供一个时间为 TJ 的全导通阶段，再输出起始
电压 US，此后电压沿一给定斜率，经过给定的起动时间 TS（根据负载大小，自动调节起动过程），
到达额定电压。
For large-torque load, the soft-starter outputs initial voltage US after provides an
all-conduct connecting stage what needs time TJ, according to the load the load power,
and along with a set slop, initial voltage Us adjusts the starting process automatically,
then reaches a rated voltage Ue via a set Starting time Ts.
输出电压 Output voltage
运行段
Running stage
起动段
Starting stage
Us
Ts 时间 Time0
Ue
4- 工作原理及接线 Working principle & connecting

Page 13
ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
输出电压 Output voltage
运行段
Running
stage
起动段
Starting
stage
Us
Ts 时间 Time 0
Ue
突跳段
Abrupt
jump stage
TJ
● 电流斜坡模式 Current slope mode
电流斜坡控制由二个基本参数起始电压 US 和起动时间 TS 组成，当电机起动时，软起动器
开始输出起始电压 US，电机获得起始电流 Is，此后电流沿一给定斜率，经过给定的起动时间 Ts
（根据负载大小，自动调节起动过程），到达电机运行电流。
The current slop is composed of two parameters: initial voltage Us and Start time
Ts: When the motor starts working, soft-starter outputs initial voltage Us, and motor
is provided with initial current Is. According to the load power, and along with a set
slop, initial current adjusts the starting process automatically, and then reaches running
current of motor via a set Start time Ts.
输出电压 Output voltage
最大电流值
Maximum
current value
运行电流
Running
current
起始电流 Ts
Initial current 起动段
Starting
stage
运行段
Running
stage
时间 TimeTs0
4- 工作原理及接线 Working principle & connecting

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ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
● 突跳 + 电流斜坡模式 Snap jump with current slope mode
对于高转矩负载，软起动器在初始起动阶段提供一个时间为 TJ 的全导通阶段，再输出起始
电压 US，获得起始电流 Is，此后电压沿一给定斜率，经过给定的起动时间 TS，根据负载大小，
自动调节起动过程，到达电机运行电流。
For large-torque load, the soft-starter output initial voltage US after provides an
all-conduct connecting stage what needs time TJ, and motor is provided with initial
current Is. According to the load power, and along with a set slop, initial current adjusts
the starting process automatically, and then reaches running current of motor via a set
Start time TS.
● 限流斜坡模式 Current-limit slope mode
电流斜坡控制由二个基本参数起始电压 US 和起动时间 TS 组成，当电机起动时，软起动器
开始输出起始电压 US，电机获得起始电流 Is，此后电流沿一给定斜率，到达限流值后，不再上升，
经过给定的起动时间 Ts（根据负载大小，自动调节起动过程），电机达速，进入运行状态。
The current-limit slope is composed of two parameters: initial voltage US and
Start time Ts; When the motor starts working, soft-starter outputs initial voltage US,
and motor is provided with initial current Is. The initial current rises with a set slop until
it reaches a current-limited value. According to the load power, initial current adjusts
the starting process automatically, and then motor accelerates speed and begins to
running via a set Start time Ts.
输出电压
Output
voltage
最大电流值
Maximum
current value
运行电流
Running
current
起始电流
Initial current 起动段
Starting
stage
运行段
Running
stage
时间 TimeTsTJ
0
4- 工作原理及接线 Working principle & connecting
突跳段
Abrupt
jump stage

Page 15
ATA SA-7 系列全数字交流电机软起动器
ATA SA-7 Series AC motor Soft Starter
4- 工作原理及接线 Working principle & connecting
输出电压 Output voltage
限流值
current limiting
value
运行电流
Running
current
起始电流
Initial current 起动段
Starting
stage
运行段
Running
stage
时间 TimeTs0
● 突跳 + 限流斜坡模式 Snap jump with current-limit slope mode
对于高转矩负载，又要限制电流的严格场所，软起动器在初始起动阶段提供一个时间为 TJ
的电流值，给电机一个允许的电流最大值，再输出起始电压 US，获得起始电流 Is，此后电流沿
一给定斜率，到达限流值后，不再上升，经过给定的起动时间 Ts（根据负载大小，自动调节起
动过程），电机达速，进入运行状态。
For large-torque load and current-limit site, the soft-starter provides a current
value what needs time TJ during initial start status, and gives motor the max current
value. The soft-starter outputs initial voltage Us, and motor is provided with initial
current Is. The initial current rises with a set slope until it reaches a current-limited
value. According to the load power, initial current adjusts the starting process
automatically, and then motor accelerates speed and begins to running via a set Start
time Ts.
输出电压
Output
voltage
限流值
current limiting
value
运行电流
Running
current
起始电流
Initial current 起动段
Starting
stage
运行段
Running
stage
时间 TimeTsTJ
0
突跳段
Abrupt
jump stage