YTC定位器中文版样本

CED137, CBD074,电气阀门定位器故障诊断和措施▶ 输入电流信号，定位器不动作。

(1) 确认减压阀是否正常供气。

输入压力至少要超过1.4kgf/cm2以上。

使用弹簧复位型执行机构时，输入压力要大于弹簧系数大小。

(2) 确认电流信号和接线是否正常。

电流信号范围是 4-20mA DC。

(3) 确认定位器的零位，量程调节是否偏向某一方，特别是确认零点设定是否过高或过低。

(4) 确认定位器的喷嘴是否被堵住。

确认减压阀是否正常供气，手动调节挡板，确认喷嘴是否有空气输出。

如果喷嘴被堵，请把产品发到我公司代理商处，进行维修。

(5) 确认反馈杆是否正确连接到执行机构上。

正确与否请参考本说明书安装部分。

▶ 出口1压力上升到减压阀设定压力大小后不下降时。

(1) 确认自动/手动开关是否漏气。

如果漏气请更换开关或更换先导阀。

(2) 确认喷嘴和挡板是否正常，有无破损。

如果破损，请和我公司或我公司代理商联系。

手动开关上的恒节流孔是否被堵。

如果被堵请参照下面图片清洗 (1) 拧开锁定螺丝。

(2) 拿出自动／手动开关。

请用直径为的螺丝或钢线穿通图 :自动／手动旋钮的清洗方法▶ 只能通过自动/手动开关才有压力输出时。

(1) 确认喷嘴是否被堵住。

确认减压阀是否正常供气，手动调节挡板，确认喷嘴是否有空气输出。

如果喷嘴被堵，请把产品发到我公司代理商处进行维修。

▶ 执行机构发生振荡时。

(1) 确认先导阀侧面的负载弹簧是否脱落。

如果脱落，请重新正确安装。

(2) 确认执行机构体积是否过小。

这种情况可以通过加载节流孔，减小输入到执行机构的流量来解决。

(3) 确认阀杆和执行机构推杆摩擦力是否过大。

这种情况要通过加大执行机构尺寸或减小阀杆摩擦力解决。

(4) 如果上述三项措施也不能解决振荡问题，请和我公司或代理商联系。

▶ 执行机构只有开/关动作，没有中间调节。

(1) 确认执行机构和定位器的动作方式。

YT-1000系列定位器是随着输入信号增加，出口1的压力增加，按这个原理要正确连接气路。

yt500定位器说明书YTC2500智能定位器安装及操作说明书※气路连接●连接定位器的输出与气动执行器的气缸●使用与定位器气源端口处标识的标准接口连接气源●气源连接口前方必须安装过滤器或带有过滤器的空气过滤减压阀，防止水分、油污等异物渗入●确认定位器反馈杆动作方向与执行机构运行方向一致※电气连接根据下列接线端子图以及设计要求进行相应的配线接线端子名称接线方式IN+电流输入信号端子DC4-20mA负载等效电阻Max.410ΩIN-FG接地端子安全保护地OUT+反馈信号端子外接+24V供电反馈电流4-20mAOUT-※调试步骤1.接通气源，检查减压阀后压力是否符合执行器的铭牌参数要求，供气压力范围是0.14-0.7MPa(1.4‐7kgf/cm2)，请不要超过这个范围使用；2.接通4---20mA输入信号。

（定位器的工作电源取自输入信号，由DCS二线制供电，不能将DC24V直接加至定位器，否则有可能损坏定位器电路）；3.检查位置反馈杆的机械安装，拆下气缸锁定螺丝，并检查气源管路防止漏气；4.手动方式检查执行机构动作，●在运行模式下，按住键6秒，直至屏幕显示[AUTO CAL]●按键或键，切换屏幕显示[MANUAL]●按下键，进入手动方式，屏幕显示[*MA xxx]，其中xxx为手动设定指令，可使用键盘操作执行机构动作●按下键或者键可以手动控制气缸慢速动作，按住键同时按下键或者键可以手动控制气缸快速动作,手动操作无误后，按键退出手动操作模式●手动操作时，检查气缸的开关位置能否到位，动作速度是否正常，定位器及管路是否有漏气。

5.进入自动整定●在运行模式下，按住键6秒，直至屏幕显示[AUTO CAL]●按下键，屏幕显示[AUTO1]●按键或键，切换屏幕显示[AUTO2]●按下键，定位器开始自动整定，整定结束后屏幕显示[COMPLETE],并自动保存退出至运行模式下6.如阀门动作方向与输入信号方向相反，则需要切换正反作用●在运行模式下，按住键6秒，直至屏幕显示[AUTO CAL]●按键或键切换，直至屏幕显示[VALVE]●按键进入菜单项，屏幕显示[ACT]●按键，屏幕显示[*ACT]●按键或键切换正反作用，并按键确认保存(屏幕显示为正作用[+ACT RA]或反作用[+ACT DA])7.如定位器屏幕显示与风门开度相反，则需要切换正反开度显示●在运行模式下，按住键6秒，直至屏幕显示[AUTO CAL]●按键或键切换，直至屏幕显示[VIEW]●按键进入菜单项，屏幕显示[YT2500L]或[YT2500R]●按键或键切换，直至屏幕显示[VM]●按键，屏幕显示[*VM]●按键或键切换正反方向开度显示，并按键确认保存(屏幕显示为[+VM NOR]正方向显示或反方向显示[+VM REV])智能定位器程序功能图解1.功能模式：运行模式：即定位器远方操作模式，定位器接收远方操作信号来控制气缸动作，并在屏幕上显示[RUN]。

使用手册(YT-1000R/角行程) Young Tech Co., Ltd.1. 简介电-气阀门定位器YT-1000R是一种从控制器或控制系统中接受4~20mA电流信号，并向气动执行机构输送空气来控制阀门开度的装置。

2. 特征- 在5~200Hz范围内无共振现象。

- 不用更换零件只需简单操作即可进行1／2范围内的分程控制。

- 零调节和量程调节非常简单。

- 正作用和反作用,单作用和双作用之间可方便转换。

- 反馈杆连接非常简单。

- 反应速度快而准确。

- 空气消耗量小，经济性好。

- 在小型执行器也可利用先导阀的节流孔来防止振动现象。

3. 参数型号动作形式防爆等级反馈杆喷嘴连接形式环境温度选用配件1选用配件2Y T-1000RS单作用mExdmIIBT51M6×40L1小于90㎤1PTS-20℃~70℃标准指示器0无D双作用cExdmIICT52M6×63L290~180㎤2NPTH-20℃~120℃1圆顶指示器1+PTM(内置)IExiaIIBT63M8×40L3大于180㎤L-40℃~70℃2+PTM9(外置)n不防爆4M8×63L3+L/S(内置)5NAMUR4+L/S(外置)5+PTM+L/S(内置)<备注>以大气温度20℃,绝对压760㎜Hg,相对湿度65%为基准。

本产品的基本配置适用于耐压封闭防爆(ExdmⅡBT6)及容器保护等级IP66。

以单作用(Single Acting)为标准。

用量程调节旋扭可达到1／2范围内的分程控制。

标准类型以外的产品请另询问。

5. 结构图6. 动作原理为了改变阀门的位置增加输入电流。

由①力矩马达发生力，使②挡板和③喷嘴之间距离增加从而喷嘴背压急剧减小。

⑤阀芯向上移动,同时⑦气门被打开，把出口1导管空压送到⑩执行机构。

增加⑪执行机构腔内的压力而使⑫执行机构轴开始旋转。

随着⑫执行机构轴开始旋转，与反馈杆连接的反馈弹簧被拉伸。

使用手册(YT-1000R/角行程)Young Tech Co., Ltd.1. 简介电-气阀门定位器YT-1000R是一种从控制器或控制系统中接受4~20mA电流信号，并向气动执行机构输送空气来控制阀门开度的装置。

2. 特征- 在5~200Hz范围内无共振现象。

- 不用更换零件只需简单操作即可进行1／2范围内的分程控制。

- 零调节和量程调节非常简单。

- 正作用和反作用,单作用和双作用之间可方便转换。

- 反馈杆连接非常简单。

- 反应速度快而准确。

- 空气消耗量小，经济性好。

- 在小型执行器也可利用先导阀的节流孔来防止振动现象。

3. 参数型号动作形式防爆等级反馈杆喷嘴连接形式环境温度选用配件1选用配件2 YT-1000R单作用 ExdmIIBT5 M6×40L小于90㎤ PT -20℃~70℃标准指示器无双作用 ExdmIICT5 M6×63L 90~180㎤ NPT -20℃~120℃圆顶指示器 +PTM(内置)ExiaIIBT6 M8×40L大于180㎤ -40℃~70℃ +PTM9(外置)不防爆 M8×63L +L/S(内置)NAMUR +L/S(外置)+PTM+L/S(内置) <备注>以大气温度20℃,绝对压760㎜Hg,相对湿度65%为基准。

本产品的基本配置适用于耐压封闭防爆(ExdmⅡBT6)及容器保护等级IP66。

以单作用(Single Acting)为标准。

用量程调节旋扭可达到1／2范围内的分程控制。

标准类型以外的产品请另询问。

5. 结构图6. 动作原理为了改变阀门的位置增加输入电流。

由①力矩马达发生力，使②挡板和③喷嘴之间距离增加从而喷嘴背压急剧减小。

⑤阀芯向上移动,同时⑦气门被打开，把出口1导管空压送到⑩执行机构。

增加⑪执行机构腔内的压力而使⑫执行机构轴开始旋转。

随着⑫执行机构轴开始旋转，与反馈杆连接的反馈弹簧被拉伸。

当定位器的输入信号产生的电磁力矩与反馈弹簧的力矩相平衡时，⑫执行机构的轴停止旋转。

智能定位器产品手册YT-3100Rotork YTC Limited目录1引言 (5)1.1一般用户信息 (5)1.2制造商保修 (5)1.3防爆警告（仅适用于本质安全型定位器） (6)2产品说明 (7)2.1常规信息 (7)2.2主要特点和功能 (7)2.3标签说明 (8)2.4产品代号 (9)2.5产品规格 (10)2.6证书 (11)2.7部件和组件 (12)2.8产品尺寸 (13)3安装 (14)3.1安全 (14)3.2安装工具 (14)3.3直行程定位器安装 (15)3.3.1安全 (15)3.3.2标准反馈杆型定位器安装步骤 (16)3.4角行程定位器安装 (20)3.4.1组件 (20)3.4.2角行程支架信息 (21)3.4.3角行程定位器安装步骤 (22)4连接 -空气 (24)4.1安全 (24)4.2供给压力条件 (24)4.3管路连接 (24)4.4连接 - 执行管路 (25)4.4.1单作用执行器 (25)4.4.2双作用执行器 (25)5连接 - 电源 (26)5.1安全 (26)5.2连接 (26)5.3接地 (27)6调节 (28)6.1孔口件安装 (28)7选配型副PCB安装 (29)7.1安装步骤 (29)8维护 (30)8.1供给压力 (30)8.2密封件 (30)9自动校准和PCB操作 (31)9.1警告 (31)9.2LCD显示器和按钮 (31)9.2.1LCD显示器和符号 (31)9.2.2按钮和功能 (32)9.3菜单层级 (33)9.4运行模式监控 (34)9.5配置和操作 (35)9.6校准(CALIb) (37)9.6.1动作类型(SINGLE / dOUBLE) (38)9.6.2自动校准1(AUTO 1) (38)9.6.3自动校准2(AUTO 2) (39)9.6.4自动校准3(AUTO 3) (40)9.6.5行程零点(TVL ZERO)和行程终点(TVL ENd) (41)9.7手动操作(MAN OPER) (42)9.7.1通过设置位置进行手动操作(MAN SP) (42)9.7.2利用MV进行手动操作(MAN MV) (42)9.8控制参数(CTL PARM) (43)9.8.1死区(dEAdbANd) (43)9.8.2向前P参数(KP UP)和向后P参数(KP dN) (43)9.8.3向前积分时间参数(TI UP)和反向积分时间参数(TI dN) (44)9.8.4向前D参数(Kd UP)和向后D参数(Kd dN) (44)9.8.5自动死区模式(AUTO db) (44)9.8.6性能模式(PER STbL / NORM / FAST) (45)9.9输入配置(IN CFG) (46)9.9.1信号方向(SIG NORM / REVS) (46)9.9.2分程模式(SPLIT 4.20 / 4.12 / 12.20 / CSt) (47)9.9.3自定义分程模式零点(CST ZERO) (47)9.9.4自定义分程模式终点(CST ENd) (48)9.9.5阀门流量特性曲线(CHAR LIN / EQ / USER 5P / USER 21P) (48)9.9.6用户设置5个特性点(USER 5P) (49)9.9.7用户设置21个特性点(USER 21P) (50)9.9.9用力关闭(TSHUT CL) (52)9.10输出配置(OUT CFG) (53)9.10.1位置发送器方向(PTM NORM / REVS) (53)9.10.2位置发送器零点/终点(PTM ZERO / ENd) (54)9.10.3反算(bACKCAL oFF / on) (55)9.11设备配置(dEV CFG) (56)9.11.1动作设置(ACT) (56)9.11.2直行程差值(ITP oFF / on) (57)9.11.3参数锁定(Write Protect, W UNLOCK / LOCK) (57)9.11.4实际位置查看模式(View Mode, VI NORM / REVS) (58)9.11.5出厂重置(dEFAULT oFF / on) (58)9.11.6定位器自测试(SELFTEST) (59)9.12诊断模式(dIAGNd) (60)9.12.1默认警报设置 (60)9.12.2设备状态(dS) (61)9.12.3重置警报状态(RST ALRM oFF / on) (62)9.12.4查看事件日志(EVT LOG) (63)9.13位置信息(INFO) (64)9.14自动校准过程中显示的错误代码 (66)9.15状态和警报代号 (67)10主要软件地图 (68)1 引言1.1 一般用户信息感谢您购买Rotork YTC Limited产品。

天宇-C93T产品手册-20140329天宇光电 GPS 产品系列天宇 C93T产品手册广州天宇光电仪器有限公司二○一四年三月第一章天宇C93T GPS概述§1.1 关于天宇C93T GPS介绍作为先进的测绘技术，GPS测量技术在众多测量生产中的作用变得日益广泛和重要。

天宇光电一如既往打造中国测绘仪器高端，紧随世界先进测量技术的发展，自助攻关研发，牢牢掌握了测绘仪器领域所有先进核心技术，再次为全国测绘仪器用户献上一场GPS的“饕餮盛宴”。

天宇C93T GPS主机，集成了天线、主板、电台、接收天线、蓝牙模块、电池等组件，移动站完全一体化，只需手簿操作即可工作。

天宇C93T GPS系统结合了最新的GPS RTK 接收机的先进技术并以精巧的外观，迷人的色彩给你带去时尚的测量模式。

天宇C93T GPS，依靠先进的GPS接收机技术在设计上着重于更高的稳定性，更低的功耗，更小的体积，更轻的重量。

天宇C93T GPS，在防水、防尘方面有独特的设计。

电池和内置电台都安放于主机的底部，更有效的防水防尘。

§1.2 四大特色1、一体化设计与抗干扰的完美结合一体化设计是世界同类产品的潮流，彻底摆脱“线”制，模块化的设计有效解决机器内部的干扰问题。

2、专业设计的数传电台，误码率低，方便写频掌握核心的数传电台技术，主体性能达到国外先进水平，方便写频，为客户解决串台问题，误码率在10-7。

3、工业级模具三防设计（防尘、防水、防震）专业的模具、高强度的工业外壳材料以及具有很强防水能力的防水圈，使得C93T GPS的野外性能更优越。

4、双接口（USB、串口）高速传输，4G大内存。

除了一般仪器用的COM口外，天宇C93T GPS采用USB的串行口连接技术方便大容量静态数据的传输。

内置4G内存，可以满足静态连续一秒间隔采集一个星期以上，若采集间隔增大，存贮时间还将成倍增加。

§1.3 技术特色1、科技传承融会贯通核心的RTK数据链技术，主体性能达到国际先进水平；双键飞梭的方便操作，轻松实现各种主机功能操作；无线的蓝牙通讯方式；工业级的三防设计等多年来掌握并实践的先进RTK技术在C93T GPS中得到传承，使得主机的稳定性得到有效的保障。

Electro-pneumatic PositionersYT-1000L SeriesUSER'S MANUALYTC Ver 1.01Table of ContentsIntroduction3 Manufacturer Warranty3 Product Description4 Main Features and Functions4 Operation Logic4 Label Description5 Suffix Symbol5 Specification6 Parts and Assembly7 Dimension8 YT-1000L: Explosion-Proof Type8 YT-1000L: Intrinsically Safe Type8 Installation9 Safety Waring9 Tools for Installation9 YT-1000L Installation9 Piping Connection12 Supply Pressure Condition12 Pipe Condition12 Piping Connection with Actuator12 Power Connection13 Connection - Connection Port13 Connection - Cable Gland13 Connection - Power14 Connection - Ground14 Adjustment15 Adjustment - Zero15 Adjustment - Span15 Adjustment - A/M Switch (Automatic/Manual)15 Adjustment - Seat Adjuster15 Adjustment - Orifice16 Troubleshooting17IntroductionThank you for choosing YTC product. Each product is fully inspected after the production to offer you the highest quality. In order to fully utilize the product, we strongly recommend users to read this manual carefully and understood.z The manual should be provided to the end user.z The manual can be changed or revised without any prior notice. Any changes in product's specification, structure, and/or any components may not result immediate revised version of the manual.z The manual should not be duplicated or reproduced for any purpose without any approval from Young Tech Co., Ltd, South Korea.Manufacturer Warranty- For the safety, it is imperative to follow instructions in the manual. It is not manufacturer's liability for any damages which caused by users' negligences.- It is not manufacturer's liability for any damages or accidents which resulted by any alteration or modification of the product and parts. If alteration ormodification is necessary, please contact the manufacturer directly.- Manufacturer warrants the product from the date of original retail purchase of the product for one (1) year, except as otherwise stated.- Manufacturer warranty will not cover the products that the product have been subjected to abuse, accident, alteration, modification, tampering, negligence,misuse, faulty installation, lack of reasonable care, repair or service in any waythat is not contemplated in the documentation for the product, or if the modelor serial number has been altered, tampered with, defaced or removed;damages that occurs in shipment, due to act of God, failure due to powersurge, and cosmetic damage. Improper or incorrectly performed maintenance or report voids this Limited Warranty.- For detailed warranty information, please contact the corresponding local Young Tech Co., Ltd office or main office in South Korea.Product DescriptionMain Features and Functionsz It is designed for high durability and performance in high vibration environment.z Durability has proven after testing of 1 million times, at least.z Response time is very short and accurate.z Simple part change can set 1/2 Split Range.z It is economical due to less air-consumption.z Direct/Reverse action can be set easily.z Zero & Span adjustment process is simply.nozzle(③) and the flapper(②) increases, which results pressure in upper spool(⑤) exhaustion. This would cause spool(⑤) to rise upward. As the spool(⑤) rises, the air pressure will be supplied to the actuator(⑩). As the actuator's inner pressure increases, the actuator stem(⑫) will move. The movement will be transferred to cam(⑭) and pulls the span spring(⑮). The span spring(⑮)'s force will be balanced with torque motor(①), and this would cause to move flapper(②) to the normal position and reduce the gap between the nozzle(③). As the air pressure exhaustion level decreases through the nozzle(③), the pressure level in upper spool(⑤) increases again. The spool(⑤) would come back to the normal position and block the seat(⑦) which would lead to block the supply air from the actuator(⑩). When the actuator(⑩) stops the movement, the positioner would come back to the normal position. <Figure 1>Suffix SymbolYT-1000L series follows suffix symbols as follows.YT-1000L════════════════════════════════Motion Type S :LinearD :Double════════════════════════════════Explosion Proof m :Ex dm IIB T5C :Ex dm IIC T5:Ex ia IIB T6in :Non-Explosion════════════════════════════════Feedback Lever 1 :10 ~ 40mm:30∼ 70mm23 :60 ∼ 100mm4 : 100 ∼ 150mm════════════════════════════════Orifice 1 : Ø1Ø22:3 : None════════════════════════════════Connection Type 1 :PT2 :NPT════════════════════════════════Ambient Temperature S :-20 ~ 70℃H :-20 ~ 120℃L :-40 ~ 70℃════════════════════════════════* For special specification, please contact our sales department.Specification* Tested under ambient temperature of 20℃, absolute pressure of 760mmHg, and humidity of 65%.Please contact us for more detailed specification.* 1: For 1/2 Split Control, it can be applied by adjusting zero and span.*2: For inquiry regarding strokes under 10mm or above 150mm, please contact YTC.* 3: YT-1000L has different types of explosion proof certificates. Please make sure to check explosion proof grade.Parts and AssemblyInstallationSafety WarningWhen installing positioner, please ensure to read and follow safety instruction.z All input and supply pressure to valve, actuator, and other related devices must be turned off.z Use bypass valve or other equipment to avoid entire system "shut down."z Make sure there is no remaining pressure in the actuator.Tools for installation①Hexagonal wrench②Screw drivers (+) & (-)③Spanners for hexagonal-head boltsYT-1000L installationYT-1000L should be installed on linear motion valve such as globe valve or gate valve using spring return type diaphragm or piston actuator. Before installation, be sure to check for following installation components.①YT-1000L main body②Feedback lever and lever spring③Flange nut (bottom side of YT-1000L)④4 pcs. of hexagon head bolts (M8 X 1.25P)⑤4 pcs. of M8 plate washerInstallation Steps(1)Proper bracket must be made in order to attach positioner on the actuator yoke.Please consider following when making a bracket.① Feedback lever should be leveled at 50% of valve stroke. (Refer to Step 7)② Feedback lever connection bar of actuator clamp should be installed at the position that the valve stroke and numbers which indicated on the feedback lever must be fitted. (Refer to Step 8)produced in earlier step, by using bolts.<Figure 2> Please refer to backside of theavailable. Please contact YTC sales department.(3) Attach YT-1000L (with bracket) to the actuator yoke - DO NOT TIGHTENCOMPLETELY.(4) Connect YT-1000L feedback lever to the actuator clamp. The gap on theYT-1000L feedback lever is 6.5mm. The connection bar thickness should be less than(7) If connection bar does not point at 50% point, then adjust bracket or feedbacklink bar position. Failure to position at 50% would lower the linearity of the positioner. <Figure 6><Figure 6>(8) Check valve stroke. The stroke numbers are indicated on the feedback lever.Position connection bar at the number on the feedback lever according to the valve stroke. <Figure 7> To adjust, move the bracket or connection bar.Stroke 30mmStroke 70mm<Figure 7>NoteAfter instaling YT-1000L, operate the valvefrom 0% to 100% stroke by using air filterregulator on the actuator. Both of 0%and 100%, the feedback lever should nottouch the lever stopper, which is locatedon the backside of YT-1000L. <Figure 8>If the feedback lever touches the leverstopper, YT-1000L should be installedfurther away from the center of the yoke. <Figure 8>(9) After the proper installation, tighten all of the bolts on the bracket, thefeedback lever, and the connection bar.Piping ConnectionNotez To avoid entering moisture, oil, or dust into the product, please carefully make selection of supply pressure compressor.z It is recommended to attach air filter regulator before supply port of YT-1000.Supply Pressure Condition①Dry air with at least 10℃ lower than ambient temperature.②Avoid from dusty air. Filter can only sort 5 micron or larger.③Avoid any oil.④Comply with ANSI/ISA-57.3 1975(R1981)이나 ISA S7.3-1975(R1981).⑤Not to be used beyond the range of 1.4 - 7 kgf/cm2(140 - 700 kPA).⑥Set air filter regulator's supplied pressure 10% higher than actuator's spring rangepressure.Pipe Condition①Make sure inside of pipe is emptied.②Do not use pipeline that is squeezed or has hole.③To maintain flow rate, use the pipeline that has more than 6mm inner diameter.(10mm outer diameter)④Do not use extremely long pipeline system. It may affect flow rate due to thefriction inside of the pipeline.Piping connection with actuatorYT-1000 series single acting type is set to use OUT1 port. OUT1 port should be connected with supply pressure port from actuator when using single acting type of spring return actuator. For double acting type, the piping connection can be changedConnection - Power①Open terminal box cover.②Locate the poles and connect them properly. Make sure to fasten the connection.③Close back the terminal box cover. <Figure 15>Safety WarningYT-1000L designed under intrinsically safe procedures and restriction. However, intrinsically safe system can be damaged from electronic energies from other electronic devices. To avoid any system damages, please read the following.z Differentiate intrinsically safe type circuit with other types of circuit clearly.z Apply proper protection device to reduce frictions.z If possible, minimize the use of inductance and capacitance. If they must be used, set the devices at lower level than the maximum level.z Protect the wires from damages.zConnection - Ground① Open positioner's body cover.②properly. <Figure 16>AdjustmentAdjustment - Zero Point①and system must be taken account. Please refer to<Figure 17> for increase/decrease of the zero point.②When single acting actuator with spring is used, please check if the pressure levelwhich is indicated on the positioner is same to the supplied pressure level.Adjustment - Span①towards '-' direction. <Figure 18>②until both points are properly set.③Adjustment - A/M Switch (Auto/Manual)①A/M switch adjusts the valve operation toautomatic or manual.②When produced, YT-1000L is set at"A(Automatic)". If user prefers the positioner'ssetting as "M(Manual)," the setting can be<Figure 19>③If it is set as "M(Manual)", the air pressure will besupplied to the actuator directly. Always set backto "A(Automatic)" after setting change.④actuator is used, A/M Switch will not operate. <Figure 19>Adjustment - Seat Adjuster①Seat Adjuster is set according to the customer's request before the positioner isdelivered. Please do not adjust the Seat Adjuster.②Seat Adjuster is used for double acting actuator always and adjusted when theAdjustment - Orifice①If the size of actuator is too small relative to the flow rate, positioner can havehunting. In order to avoid hunting, orifice can be used. There are three types of the orifice.Actuator Size Orifice Size Suffix Symbol90 cm3less∅1190 ~ 180 cm3∅22180 cm3more none3②Remove the o-ring from OUT1 and OUT2 port and insert appropriate orifice. AfterTROUBLESHOOTING▶ Positioner does not respond to the input signal.(1)Check supply pressure level. The lever must be at least 1.4 kgf/cm2. Forspring-return type of actuator, the supply pressure level has to be larger than the spring's specification.(2)Check if input signal is properly supplied to the positioner. The signal should be4~20mA DC.(3)Check if zero point or span point is properly set.(4)Check if the positioner's nozzle has been blocked. Also, check if the pressure issupplied to the positioner and the pressure is being exhausted through the nozzle.If the nozzle has been block by any substances, please send the product forrepair.(5)Check if feedback lever has been installed properly.▶ The pressure of OUT1 reaches exhausting pressure level and does not come back down.(1)Check A/M Switch. If the switch has been damaged, replace the switch or pilotrelay valve.(2)Check for a gap or damages between the nozzle and the flapper. If damaged,please send the product to YTC for repair.▶ The pressure is exhausted only by A/M Switch.(1)Check if the positioner's nozzle has been blocked. Also, check if the pressure issupplied to the positioner and the pressure is being exhausted through the nozzle.If the nozzle has been blocked by any substances, please send the product toYTC for repair.▶ Hunting occurs.(1)Check if safety spring has been displaced. (Next to Pilot relay valve)(2)Check if the size of actuator is too small. If so, insert an orifice in order toreduce the pressure flow rate.(3)Check if there is any friction between the valve and the actuator. If so, increaseactuator's size or reduce the friction level.▶ Actuator only operates by On/Off.(1)Check actuator and positioner's acting type. Air pressure exhausts fromYT-1000L's OUT1 port as input signal level increases. Therefore, it is standard to connect to OUT1 port when single actuator is used. Make sure the spanadjustment is properly set according to the valve system.▶ Linearity is too low.(1)Check if positioner is properly positioned. Especially check if the feedback lever isparallel to the ground at 50% point.(2)Check if zero and span point have been properly adjusted. If either one of valuesis being adjusted, another one must be re-adjusted as well.(3)Check if supply air pressure level is stable from the regulator. If the level isunstable, the rgulator must be replaced.▶ Hysteresis is too low.(1)In case of double acting actuator, check if seat adjustment has been properlyperformed. Please contact YTC for any further inquiries regarding the seatadjustment.(2)Backlash can occur when the feedback lever and lever spring are loosen. Toavoid backlashing, please adjust the lever spring.(3)Check if the connection bar to the feedback lever is tightly fastened.Young Tech Co., LtdAddress:#662-8 Pungmu-Dong, Gimpo-City, Kyunggi-Do, South KoreaTelephone: +82-31-986-8545Fax: +82-31-986-2683Website: http://www.ytc.krUser Manual and other information on the documents are subjected to change without any notice. Please visit website for most updated information. Printed Date: June, 2007。