مرحل التحكم شنايدر CA4KN31BW3

CA4KN: TeSys K series control relay

31: تكوين الاتصال: 3 لا + 1 نورث كارولاينا

ب: 24 V DC low-consumption coil with built-in bidirectional freewheeling diode

W3: Screw clamping terminals

المعلمات التقنية الأساسية

لفائف: 24 V DC low-power coil, integrated bidirectional peak suppression diode

Contact arrangement: 3 مفتوح عادة + 1 مغلق عادة (3لا + 1NC), 4-القطب

التيار الحراري التقليدي Ith: 10 أ (في 50 درجة مئوية)

تصنيف الجهد العزل واجهة المستخدم: 690 V

Utilisation category: ايه سي-15 / دي سي-13 (standard control circuit loads)

تصاعد: DIN35 rail mounting or base plate fixing

الأسلاك: محطات المسمار, تشديد عزم الدوران 1.3 ن · م

أبعاد: W45 mm × H58 mm × D57 mm

التحمل الميكانيكي: 20 مليون عملية

Recommended protection: 10 A gG fuse

أصل: أندونيسيا

التطبيقات النموذجية

PLC digital output expansion, signal isolation & transfer, المنطق المتشابك, indicator lamp driving, small solenoid/coil actuation. It is an auxiliary control relay, not intended for high-power main circuits. It shares the same footprint as TeSys K contactors and can be installed side-by-side.

Cross-reference for Replacement & اختيار

CA4KN22BW3: 2لا + 2NC, 24 في العاصمة, محطات المسمار

CA4KN40BW3: 4لا, 24 في العاصمة, محطات المسمار

CA4KN31BN3: Spring-cage terminal version (replaces W3)

Customs HS Code

HS code: 85364190 (Electromagnetic relays, rated voltage ≤60 V)

Common Replacements

البدائل المحلية: شينت / لذيذ 24 V DC control relays with 3NO+1NC contact configuration.

شنايدر direct upgrade: other coil variants within the CA4KN series (على سبيل المثال, 110 في العاصمة).

Typical Application Cases for CA4KN31BW3 (3لا + 1NC, 24 V DC Low-Consumption Control Relay)

Key advantages: built-in bidirectional freewheeling diode, low coil power consumption, direct PLC DO driving; 3NO+1NC allows 3 output channels plus 1 feedback channel; AC-15/DC-13 rated, max operating frequency: 180 cycles per minute.

قضية 1: PLC Digital Output Port Expansion (الأكثر شيوعًا)

سيناريو: Insufficient PLC DO points; DO ports have low current capacity (<0.5 أ) and need to drive multiple contactor coils and solenoid valves simultaneously.

الأسلاك: بلك 24 V DO connected to relay coil terminals A1/A2

Contact assignment:

NO1: Drive LC1D contactor coil

NO2: يقود 24 V DC solenoid valve

NO3: Run indicator lamp

NC1: Feedback to PLC DI for relay status monitoring (كسر الأسلاك / contact sticking diagnosis)

Highlights: Low-power coil avoids overloading PLC outputs; built-in diode eliminates external surge suppression circuits; same TeSys K form factor for neat cabinet layout, standard panel builder solution.

الصناعات: أدوات الآلة, آلات التعبئة والتغليف, assembly line control cabinets.

قضية 2: Auxiliary Logic Interlock & Status Collection for Main Contactors

سيناريو: Main LC1D contactors have insufficient built-in auxiliary contacts; additional interlocking, fault feedback and on/off indication are required.

Driving signal: Emergency stop circuit / safety relay output energises the CA4KN coil

Contact assignment:

NO1: Enable forward rotation circuit

NO2: Enable reverse rotation circuit

NO3: Contactor ON run lamp

NC1: Wired into reverse circuit for hardware interlock (prevents simultaneous forward & reverse operation)

ملحوظة: This is only control-circuit interlocking and cannot replace main-circuit electrical interlocks.

الصناعات: Conveying equipment, آليات الرفع الصغيرة, معجب & pump control panels.

قضية 3: معجب & Damper Interlock Control for HVAC Air Handling Units

سيناريو: DDC controller outputs control damper actuators, fan contactors and alarm lamps, with one status feedback channel to the building BA system.

Driving signal: 24 V DC output from DDC energises CA4KN31BW3

Contact assignment:

NO1: Damper open command

NO2: Fan contactor coil

NO3: Running status lamp

NC1: DI input to BA system for stop / fault feedback

المزايا: High noise immunity with built-in diode, suitable for frequent switching in weak-current building control loops; نطاق درجة حرارة التشغيل واسعة (-25 °C ~ +50 درجة مئوية) for indoor plant rooms.

الصناعات: أتمتة البناء, clean air conditioning, وحدات معالجة الهواء النقي.

قضية 4: Primary & Standby Pump Rotation Control Relay

سيناريو: Level controller / PLC output switches main pump, standby pump and alarm circuits with independent status feedback.

منطق: High water level signal energises the relay coil

NO1: Main pump start

NO2: Standby pump activation (coordinated with delay circuit)

NO3: Overflow alarm lamp

NC1: Relay fault detection signal to PLC

الصناعات: Sewage lifting, معالجة المياه, water supply control panels.

قضية 5: Signal Expansion after Safety Relay Outputs

سيناريو: XPS safety relay has limited output contacts; safety OK signals need to be duplicated to inverter enable, alarm and HMI status channels.

Driving signal: Safety relay OK output energises CA4KN coil

NO1: Inverter STO / enable signal

NO2: Safety OK indicator lamp

NO3: HMI DI safety status input

NC1: Safety circuit trip alarm

Critical reminder: Safety judgment remains the responsibility of the XPS safety relay; CA4KN only serves as signal transfer and cannot be used as a safety component alone.

الصناعات: خطوط الإنتاج الآلي, robot peripherals, cutting machinery.

قضية 6: Isolated Passive Signal Transfer for Variable Frequency Drives / البداية الناعمة

سيناريو: VFD relay output is a dry contact; multiple isolated signals need to be sent to PLC, local alarms and data loggers, with mixed AC/DC circuits.

Driving signal: VFD “يجري” dry contact controls the relay coil

NO1: PLC DI running signal

NO2: Local AC220 V run indicator

NO3: Remote SCADA transmission signal

NC1: Stop status signal

قيمة: Galvanic isolation between 24 V coil side and contact side, preventing electrical noise from coupling into the VFD mainboard.

اختيار & Application Best Practices (Frequent Engineering Pitfalls)

1. نوع التحميل: Only for control circuit loads (لفائف المقاولين, solenoids, مصابيح المؤشر); never for main power circuits. Rated thermal current: 10 أ, utilisation category AC-15.
2. Coil note: BW3 = 24 V DC low-consumption with built-in bidirectional diode. Do NOT add external LAD4RC surge suppressors, as specified in Schneider official documentation.
3. المحطات: W3 = screw terminals; spring-cage alternative: CA4KN31BN3.
4. Contact logic for 3NO+1NC: 3 output channels + 1 feedback channel, the most widely used contact allocation for automation panels.
5. تصاعد: DIN35 rail installation; can be mounted side-by-side with LC1K contactors for consistent cabinet layout.

TeSys K Control Relays (CA2KN / CA3KN / CA4KN) – Full Model Coding Rule

تنسيق النموذج الكامل: CAu KNvw + voltage code + terminal suffix

1. u = Coil Type

CA2KN: AC coil (50/60 هرتز)

CA3KN: Standard DC coil (normal power consumption)

CA4KN: Low-consumption DC coil (built-in bidirectional freewheeling diode, PLC direct drive preferred; CA4KN31BW3 falls into this category)

2. vw = Contact Combination (فقط 3 fixed configurations)

40: 4لا (4 مفتوح عادة)

31: 3لا + 1NC (3 يفتح + 1 Closed, most popular)

22: 2لا + 2NC (2 يفتح + 2 Closed)

3. رمز الجهد + Terminal Suffix (Key Part)

W3: Screw clamping terminals

N3: محطات قفص الربيع

لاحقة “3” = built-in surge suppression diode

Contact Configurations (فقط 3 Options for the Whole Series)

1. 40 = 4NO
2. 31 = 3NO+1NC (CA4KN31BW3 uses this configuration)
3. 22 = 2NO+2NC

قائمة النماذج الكاملة: CA4KN Low-Consumption DC Coil (PLC Version, Built-in Diode)

لفائف: DC low power, integrated bidirectional freewheeling diode; المحطات: W3 screw / N3 spring cage

1) 24 في العاصمة (Most Popular: BW3 / BN3)

2) 48 في العاصمة (EW3 / EN3)

CA4KN40EW3 / CA4KN40EN3

CA4KN31EW3 / CA4KN31EN3

CA4KN22EW3 / CA4KN22EN3

3) 72 في العاصمة (SW3 / SN3)

CA4KN40SW3 / CA4KN40SN3

CA4KN31SW3 / CA4KN31SN3

CA4KN22SW3 / CA4KN22SN3

ملحوظة: CA4KN series only offers 12/24/48/72 V DC low-consumption variants; no AC coil versions. CA4KN was discontinued at the end of 2024; new projects shall adopt CA3KN models with suffix “3” as direct replacements.

CA3KN Standard DC Coil (Normal Power, Built-in Diode Suffix “3”)

Voltage Codes (أفسد: BD/ED/FD…; ربيع: BD3/ED3…)

12 في العاصمة: JD / JD3

24 في العاصمة: دينار بحريني / BD3 (Top replacement: CA3KN31BD3 for CA4KN31BW3)

48 في العاصمة: الضعف الجنسي / ED3

110 في العاصمة: فد / FD3

125 في العاصمة: جي دي / GD3

220 في العاصمة: دكتوراه في الطب / MD3

Full Model Examples (3 Contact Types)

1. 24 V DC screw terminals (with built-in diode)

CA3KN40BD3 (4لا)

CA3KN31BD3 (3لا + 1NC, direct replacement for CA4KN31BW3)

CA3KN22BD3 (2لا + 2NC)

2. محطات قفص الربيع: keep the voltage code unchanged, only adjust terminal suffix; على سبيل المثال, CA3KN31BD3 (أفسد) and spring-cage variant share the same voltage code.

CA2KN AC Coil (50/60 هرتز, Main Control Circuits)

Common Voltage Codes

24 الخامس و: ب7

48 الخامس و: ه7

110 الخامس و: F7

220/230 الخامس و: M7 / ص7 (most used: CA2KN31P7)

380 الخامس و: س7

Full Contact Models (ملف التيار المتردد)

4لا: CA2KN40B7 / CA2KN40P7

3لا + 1NC: CA2KN31B7 / CA2KN31P7

2لا + 2NC: CA2KN22B7 / CA2KN22P7

التمايز الطرفي (W3/N3 vs Non-Suffix “3”)

1. W3 = Screw clamping terminals (CA4KN31BW3)
2. N3 = Spring-cage quick connect terminals (استبدال: CA4KN31BN3)
3. Models without trailing “3”: No built-in diode; external RC snubber is mandatory for DC circuits – not recommended for direct PLC DO driving.

Discontinuation Replacement Solution (Field Retrofit)

النموذج الأصلي: CA4KN31BW3 (24 V DC low-consumption, 3لا + 1NC, محطات المسمار)

✅ Direct drop-in replacement: CA3KN31BD3 (24 V DC standard coil + الصمام الثنائي المدمج, 3لا + 1NC, محطات المسمار; identical footprint, plug-and-play interchange)

General Technical Specifications (Uniform for All TeSys K Control Relays)

Contact utilisation category: ايه سي-15 / دي سي-13 (control circuit only)

التيار الحراري التقليدي: 10 أ (في 50 درجة مئوية)

تصنيف الجهد العزل: 690 V

تصاعد: DIN35 rail or base plate fixing

Overall width: 45 مم, same form factor as LC1K contactors for side-by-side mounting

التحمل الميكانيكي: 20 مليون عملية