OMRON G3PA-260B-VD 단상 무접점 계전기

제품 유형: Single-phase SSR (솔리드 스테이트 계전기), integrated heat sink, zero-cross turn-on

입력: DC 5~24V; 산출: AC 24~240V, 60A @ 40℃

1. 주요 사양

Control Input: DC 5–24V, max control current 7mA; operate voltage ≤4V, release voltage ≥1V

부하 전압: AC 24～240V (operating range 19～264VAC, 50/60헤르츠)

정격전류: 60에이 (AC-1, 40℃); derate to 48A when densely installed side-by-side

Surge Current: 440에이 (60헤르츠, 1 주기); VDRM 600V

On-state Voltage Drop: ≤1.6V RMS; Off-state Leakage Current: ≤20mA @ 200VAC

트리거 모드: Zero-crossing Turn-on, minimizes inrush & EMI

격리: Phototriac optocoupler isolation

유전 강도: 4000VAC 1min; Insulation Resistance ≥100MΩ (DC500V)

설치: DIN 레일 / 나사 장착; with operation indicator

주변 온도: -30～+80℃ (결로가 없을 것); 저장: -30～100℃

특징: Replaceable power cartridge for low maintenance cost

2. Model Number Decoding

G3PA: Series of high-current SSR with replaceable power modules

2: Output voltage class AC24–240V (4 = AC200–400/480V high voltage)

60: Rated current 60A

비: Integrated heat sink

VD: DC voltage input (DC5–24V)

3. 일반적인 응용 분야

Resistive AC loads such as heating tubes, infrared lamps, 팬과 컨베이어; PLC 트랜지스터 출력으로 직접 구동.

메모: Add varistor/RC snubber for inductive motor loads; never operate over current or over temperature.

4. Same Series Cross Reference

G3PA-240B CEO: AC24~240V, 40에이

G3PA-430B-VD: AC200–400V, 30에이

5. Domestic Equivalents (DC5-24V input, AC24-240V, 60A zero-cross SSR)

Meigeer MGR-1 D60

Ximanton H360ZF

Yangming SSR-60DA-H

Application Scenarios for G3PA-260B-VD

Core features summary: DC5–24V control, AC24–240V single-phase output, 60에이, zero-cross trigger, built-in heat sink, field-replaceable power cartridge, PLC direct drive, 비접촉식, 고주파 스위칭. First choice for resistive heating loads.

알림: This is a single-phase SSR; 사용 3 units in parallel for 3-phase heating control (one per phase).

주요 응용 (최고의 경기)

1. Temperature-controlled heating systems (largest application)

Industrial ovens, 건조 캐비닛, thermostatic baths, aging test chambers; barrel heating for injection & extrusion machines, 금형 온도 컨트롤러; heat-seal blades, hot plates on packaging machines; electroplating tank heaters, thermal oil heaters.

이점: Zero-cross switching avoids voltage spikes; matches PID time-proportion control from temperature controllers; contact-free design delivers ultra-long life for frequent cycling.

2. High-power resistive lighting

Infrared heating lamps, halogen lamps, greenhouse supplementary lighting arrays.

✘ Not recommended: Fluorescent lamps & LED 전원 공급 장치 (inductive/capacitive surge loads).

3. Light-duty fans & 컨베이어 (inductive loads with surge protection)

소형 원심 팬, hot air circulation blowers, single-phase conveyor motors with infrequent starts.

⚠️ Motors are inductive loads; external varistor/RC snubber is mandatory to suppress back EMF, otherwise the SSR will break down easily. Not suitable for large motors or frequent forward/reverse operation.

Other General Automation Applications

1. 포장 기계: Heat shrinkers, hot-knife cutters, hot air power control
2. 고무 & 플라스틱 장비: Heating platens for vulcanization & thermoforming molds
3. Environmental test equipment: Heating circuits in temperature & humidity chambers
4. 식품기계: Baking lines, fryer heating elements, thermal blanching equipment
5. 공조: Electric duct heaters, auxiliary air-conditioning heating sections
6. Cabinet power distribution: Replace relay + 접촉기 조합; quiet, arcless operation, DIN 레일 설치.

When to choose this SSR instead of electromagnetic contactors

Frequent ON/OFF cycling & PID power regulation (switching every several seconds)

Controlled by PLC or temperature controller DC24V transistor outputs

No arc noise, no contact burn-out & low maintenance required

DIN rail mounting with limited cabinet space, integrated heat sink included

Quick power cartridge replacement without full rewiring later

Unsuitable / 제한된 응용 프로그램

Direct-on-line starting of large motors, frequently started pumps (high inrush current causes instant damage)

용량성 부하, large switching power supply banks

400VAC loads (max rated voltage only 264VAC)

DC 부하 (this model is AC-output SSR only)

Circuits requiring short-circuit protection: SSR has no built-in short-circuit protection; fuse/circuit breaker must be installed upstream.

Sizing Tips

Derate to 48A when tightly mounted side-by-side (80% 현재 등급); always leave current margin.

유도 부하: Fit external 471K (470다섯, ≥1000A) varistor across output terminals, shortest wiring possible.

3-phase heating scheme: 3 independent G3PA-260B-VD, one per phase, keep 3-phase load balanced.

PID Power Regulation Wiring + Varistor Selection + Derating Installation Standard

주요 내용: This is a zero-crossing SSR, designed exclusively for time-proportion PID power regulation, not for phase-angle voltage regulation. DC5~24V input, control current ≤7mA; PLC transistor outputs and temperature controller SSR ports can drive it directly without auxiliary relays.

1. PID Control Wiring (온도 조절기 / PLC)

터미널 정의 (G3PA-260B-VD)

Control Input: A1(+), A2(-) (DC5~24V; reverse polarity will not burn the unit, just no operation)

Power Output: Line IN, Line OUT (series-connected on live wire, 24~240VAC)

Recommended wiring: MCB → semiconductor fast fuse → SSR output → Load → Neutral (N wire bypasses SSR entirely).

계획 1: Driven by 오므론 E5CC/E5EC Temperature Controller (Most Common Heating Loop)

1. SSR output of temperature controller → A1(+), A2(-) of G3PA
2. Separate power supply & PT100 thermocouple wiring
3. Critical parameter settings

출력 모드: SSR / Time Proportion (Zero-cross); DO NOT select phase-angle mode

사이클 시간 (티): 20~40s for resistive heating; 30s for ovens & mold heaters. Too short a cycle causes overheating; too long creates large temperature fluctuations.

Run AT auto-tuning after stable temperature holding.

메모: Open-collector outputs on temperature controllers have built-in 24VDC drive power, directly compatible with G3PA.

계획 2: PLC Transistor DO Drive (PNP / NPN)

PNP 출력: PLC Y terminal → A1(+); 0V of 24VDC → A2(-)

NPN 출력: 24VDC+ → A1(+); PLC Y terminal → A2(-)

PLC 프로그램: Use fixed-cycle duty-cycle output (예를 들어. 30s period, 0~100%). Avoid high-frequency PWM which overheats the thyristor.

Only 7mA input current; standard PLC transistor outputs can drive it without current-limiting resistors.

3-phase Heating (3× G3PA-260B-VD)

Independent phase control: one single-phase SSR per A/B/C phase. Inputs can share multi-channel SSR outputs from one temperature controller or multiple PLC DO points.

⚠️ This is not a 3-phase SSR; 오직 3 separate single-phase units, keep load current balanced across 3 단계.

2. 배리스터 & RC Snubber Selection (Mandatory for Inductive Loads)

The G3PA has an internal varistor, but inductive back EMF exceeds internal absorption capacity; external MOV is required, wired directly across SSR output terminals with minimal lead length.

220VAC System (기본 애플리케이션)

배리스터: 14D471K (470다섯, ≥1000A surge current); 10D471K also acceptable.

110VAC System: 14D271K (270다섯, ≥1000A)

RC 스너버 (for solenoid valves, 작은 팬 & 변압기):

C=0.047~0.1μF / 630VAC; R=100~220Ω / 2여, series RC across output terminals.

✅ Resistive heating tubes: External snubber optional; ✅ Fans, 코일 & transformers will blow the SSR without external MOV.

Upstream Fuse Protection (비판적인: SSR has no short-circuit protection)

Semiconductor SSR fails instantly under short-circuit conditions; use aR/gR semiconductor fast fuses, not standard gG general fuses.

Resistive heating loads: 80A fast fuse (1.2~1.5× rated current of 60A)

Inductive fan loads: 100A fast fuse

Install fuse immediately upstream of the SSR to shorten fault loop length.

3. 정격감소 & 설치사양 (G3PA-260B-VD Special Rule)

The G3PA-260B-VD cannot be tightly mounted side-by-side (stated in official datasheet), different from 240B/220B models.

1. Full rating condition: Vertical independent mounting, ≥10mm clearance left & 오른쪽, ambient temp ≤40℃ → 60A full current.
2. Densely arranged on DIN rail:

2 or more units installed tightly together: Max current limited to 48A (80% derating).

4+ units side-by-side: Maintain ≥10mm gap between adjacent SSRs, otherwise overheating failure occurs.

수직 스태킹: ≥80mm vertical gap between upper & lower SSRs to keep airflow.

3. Horizontal flat mounting (heat sink sideways): Derate current by an additional 30%; avoid this mounting orientation.
4. Cabinet ambient >40℃: Further derate current per temperature derating curve; add cabinet cooling fans.
5. 단자 토크: M3.5 나사식 터미널, tighten to 0.8~1.2N·m. Loose terminals cause overheating & burnt terminals.
6. Cartridge replacement: G3PA allows standalone replacement of the G32A power cartridge without rewiring main power circuits, ideal for bulk maintenance.
7. Commissioning Troubleshooting Checklist
8. Never use this zero-cross SSR for phase-angle dimming/power control; it only supports time-proportion ON/OFF power regulation.
9. Off-state leakage: ≤20mA residual voltage across load when SSR is OFF; always isolate upstream MCB before maintenance.
10. Do not add large series resistors on input side; low voltage will cause false triggering.
11. Separate DC24V control wiring from high-current power cables to avoid EMI interference.
12. Cold heating element inrush current: Limit heater rated current to ≤70% of SSR rated current for extra safety margin.
13. Quick Fault Diagnosis

Indicator ON, load no heat: Open circuit on main circuit, 끊어진 퓨즈, broken heater element.

Indicator OFF: No input voltage/polarity reversed, temperature controller output disabled, PLC program no output.

Repeated SSR breakdown: No external MOV for inductive loads, insufficient heat dissipation, oversized fuses, frequent mains voltage surges.

Severe temperature oscillation: PID cycle time too short, P-gain too high, poor thermal insulation, thermocouple misposition.

OMRON Single-Phase SSR + Electromagnetic Power Relay List

메모: All SSRs are zero-crossing, opto-isolated. G3PA series (your current model) features replaceable power cartridges, integrated heat sink & DIN 레일 장착. G3NA/G3NE are cost-effective compact SSRs. Electromagnetic relays are plug-in cabinet relays for PLC & temperature control loops.

부분 1: G3PA Series (Single-phase SSR, Priority Model)

Replaceable Power Cartridges

G32A-A20-VD-X: For G3PA-220B

G32A-A40-VD: For G3PA-240B

G32A-A60-VD: For G3PA-260B

부분 2: G3NA Economy Single-phase SSR (No integrated heat sink)

부분 3: G3NE Compact Mini SSR (Space-saving low-power use)

부분 4: G3PJ / G3PE New Generation SSR (스프링 터미널, high surge resistance)

G3PJ-225B: AC24~240V, 25에이, DC5–24V

G3PJ-245B: AC24~240V, 45에이, DC5–24V

G3PE-225B: AC24~240V, 25에이, DC5–24V

G3PE-245B: AC24~240V, 45에이, DC5–24V

모델 코딩 규칙:

2 = AC24~240V (220V heating mainstream)

4 = AC200~400/480V high voltage

VD = DC input; A = AC input

부분 5: OMRON Electromagnetic Power Relays (Plug-in cabinet type)

1. G2R 시리즈 (General-purpose Intermediate Relays)

2. LY High-current Plug-in Power Relays (Replace small contactors)

3. G7L High-capacity Power Relays (30A direct single-phase load control)

4. G6B / G6D PCB Mini Relays (Onboard PLC & 온도 컨트롤러)

G6B-1174P: 1에이, 5에이, DC24V

G6D-1A: 1에이, 5에이, DC24V

부분 6: 선택 가이드: SSR vs Electromagnetic Relay

1. 난방, PID power regulation, 빈번한 전환 & arcless operation → G3PA (첫 번째 선택) / G3NA
2. PLC DO signal conversion, low-frequency switching → G2R intermediate relay
3. ≤30A low-frequency single-phase loads, cost-sensitive → G7L / LY relays
4. Low-power, space-restricted applications → G3NE, G3PJ