Yaskawa SGDH-10DE-OY Servo Drive

Discontinued legacy 400V class 1kW Yaskawa servo, Sigma II series. The suffix OY stands for custom/special specification, mostly OEM dedicated for original machine builders. Hardware-wise, it is identical to standard SGDH-10DE, but firmware and I/O definitions differ. Direct replacement with standard SGDH-10DE may result in abnormal operation.

✅ Model Breakdown

SGDH: Sigma II SERVOPACK servo amplifier

10: Rated power 1.0kW

ดี: 3-phase 400V input (380~480VAC)

อี: รุ่นมาตรฐาน, รองรับ 3 control modes: ตำแหน่ง / ความเร็ว / แรงบิด

OY: Custom specification code, not standard off-the-shelf version. Features OEM-specific firmware, custom I/O mapping and function masking. Direct swap with non-OY SGDH-10DE carries firmware mismatch risk.

📌 Key Electrical Specifications

รายการ	ข้อมูลจำเพาะ
กำลังขับสูงสุด	1กิโลวัตต์
Main Circuit Power Supply	3-phase AC380~480V, 50/60เฮิรตซ์
Continuous Output Current	3.7ก (อาร์เอ็มเอส)
กระแสไฟขาออกสูงสุด	11.2ก (3 วินาที, 300% ความจุเกินพิกัด)
Built-in Regeneration Capacity	14ว; external regenerative resistor required for heavy braking
โหมดการควบคุม	ตำแหน่ง (pulse command), ความเร็ว (±10V analog), แรงบิด (±10V analog); mode switching available
Pulse Input	Line driver: max 500kpps; Open collector: 200kpps
Speed Loop Bandwidth	400เฮิรตซ์; supports auto-tuning and inertia identification
การสื่อสาร	RS232C / อาร์เอส485; SigmaWin commissioning software; compatible with hand-held operator JUSP-OP05A
สภาพแวดล้อมการทำงาน	0~+55°ซ, การติดตั้งตู้, no condensation or heavy dust
ขนาด (กว้าง×สูง×ลึก)	55 × 180 × 170 มม

🔌 Terminals & อินเทอร์เฟซ

ซีเอ็น1: I/O signals (command pulse, servo enable, เตือน, positioning complete, analog signals etc.)

ซีเอ็น2: Encoder feedback port, connects to Sigma II motor encoder

ซีเอ็น3: Commissioning port for handheld operator or PC communication cable

ขั้วต่อวงจรหลัก: L1, L2, L3 (3-อินพุตเฟส); U/V/W to เซอร์โวมอเตอร์; B1/B2/B3 for regenerative resistor

🧩 Compatible Motors (Sigma II 400V Series)

สกมฮ / SGMAH / SGMPH 400V 1kW Sigma II motors. โมเดลทั่วไป:

สกมฮ-09D… (1kW 400V motor, most common matching unit)

⚠️ OY firmware binding. Use original matched motor as priority. Direct replacement with standard SGDH-10DE may trigger motor identification error or I/O logic mismatch.

🛠 Protective Functions

กระแสเกิน, แรงดันไฟฟ้าเกิน, แรงดันตก, โอเวอร์โหลด, heatsink overheat, main circuit phase loss, เกินความเร็ว, encoder disconnection, parameter error, CPU fault, regeneration fault, runaway protection.

⚠ Key Notes for Selection & การทดแทน

สถานะสินค้า: Discontinued by Yaskawa. New units only available as leftover stock; most available units on market are used or refurbished second-hand parts.
ตัวเลือกการทดแทน

Direct same-series replacement: SGDH-10DE-OY mandatory with OY suffix. Hardware same as SGDH-10DE without OY, but firmware/logic differs. Back up parameters and test I/O before commissioning.

การอัพเกรดข้ามซีรีส์: Sigma-V SGDV 400V 1kW (SGDV-5R4D01A); Sigma7 SGD7S. Full rewiring and mechanical re-commissioning required; CN1 logic is completely different, plug-and-play replacement impossible.

Common Repair Faults: Main circuit alarm, encoder cable break, แรงดันไฟฟ้าเกิน (regeneration resistor failure), parameter alarm, aging electrolytic capacitors (high incidence on old units).
การว่าจ้างซอฟต์แวร์: SigmaWin+ (older version required for Sigma II); handheld operator model: JUSP-OP05A.

📦 Typical Applications

Machine tool feed axes, เครื่องจักรบรรจุภัณฑ์, อุปกรณ์สิ่งทอ, อุปกรณ์เซมิคอนดักเตอร์, handling manipulators. Many legacy machines (การพิมพ์ / forming machines) use this OY custom version as OEM standard.

❓ Supplementary Remarks

This is a 400V high-voltage servo. NEVER connect to 220V single/3-phase supply, otherwise power module will be destroyed instantly.

For second-hand units received, perform insulation test and static IGBT measurement before power-on test without load, then connect motor.

HS Code reference: 85011010 (servo drive classification, for customs declaration only, subject to customs broker confirmation).

Yaskawa Sigma II SGDH Alarm Code List (Compatible with SGDH-10DE-OY. Alarm definitions identical for OY custom version; only I/O mapping may differ.)

บันทึก: A.xx = drive alarm, power stage cut off after trigger; some alarms require power cycle reset. bb is NOT an alarm, it means servo standby with Servo OFF.

รหัสปลุก	Alarm Name	สาเหตุ & การแก้ไขปัญหา
ก.02	Parameter Corruption	EEPROM parameter damage; abnormal power down, backup battery failure. การเยียวยา: restore factory parameters, rewrite parameters. If alarm persists, main board faulty.
ก.03	Main Circuit Encoder Fault	Encoder cable broken / shorted, encoder hardware damage; not supported on high-power models.
ก.04	Parameter Setting Error	Parameter out of valid range; parameter mismatch after drive replacement (high risk for OY version). การเยียวยา: verify Pn parameters, reset factory default then reconfigure.
ก.05	Motor Combination Error	Mismatch between drive and motor model; wrong encoder type setting. ⚠️OY custom firmware, easy to trigger after motor replacement.
A.10	กระแสเกิน / ฮีทซิงค์ร้อนเกินไป	IGBT breakdown, motor winding short, power cable earth fault; fan locked, heatsink dust buildup. Most common hardware failure alarm.
A.30	Regeneration Fault	Broken regenerative resistor, loose B1/B2 terminals; damaged regeneration transistor. Frequently seen on 400V models with frequent emergency stop.
A.32	Regeneration Overload	Excessive braking energy; built-in regeneration capacity insufficient. External regenerative resistor required.
A.33	Main Circuit Power Wiring Error	3-phase input phase loss, wrong L1/L2/L3 wiring, poor contact of contactor.
A.40	แรงดันไฟฟ้าเกิน	Input voltage too high; regenerative energy during deceleration, failed regeneration circuit; aged main circuit capacitors.
A.41	แรงดันตก	Insufficient 3-phase supply, contactor not closed; missing 24V control supply, ฟิวส์ภายในขาด.
A.51	โอเวอร์สปีด	Motor actual speed far exceeds command; ข้อผิดพลาดของตัวเข้ารหัส, excessive speed loop gain, wiring interference.
A.71	Continuous Overload (High Load)	เครื่องกลติดขัด, bearing damage, โหลดมากเกินไป; wrong inertia / reduction ratio, continuous full load.
A.72	Continuous Overload (Low Load)	Overload under light load; degraded motor insulation, mechanical binding.
A.73	Dynamic Brake Overload	Frequent emergency stop causes dynamic brake circuit overheat; not monitored by SGDH-10DE (1กิโลวัตต์).
A.74	การป้องกันความร้อนของมอเตอร์	Motor built-in thermistor triggered, motor overheated.
A.7A	Encoder Communication Abnormality	Poor shielding of encoder cable, long cable interference, ออกซิไดซ์ / loose connector.
A.81	Encoder A/B Phase Error	Loss of encoder A/B signals, ข้อผิดพลาดลำดับเฟส, สายเคเบิลเสียหาย.
A.82	Encoder C-phase (เฟส Z) ข้อผิดพลาด	Home Z-phase wire break, ข้อผิดพลาดของตัวเข้ารหัส.
A.83	Encoder Battery Alarm (Absolute Motor)	Low backup battery voltage for encoder, home position lost.
A.84	Encoder Data Error	Data corruption inside absolute encoder.
A.85	Encoder Disconnection	CN2 encoder cable cut, bent / retracted pins in connector.
A.86	Encoder Power Supply Fault	Abnormal 5V output from CN2 port, shorted cable pulls down 5V supply.
A.b1	Main Circuit Detection Fault	Fault in main circuit sampling circuit, power board failure.
A.b2	CPU Fault	Damaged main control board, program runaway.
A.bF	Operator Communication Fault	Broken / loose cable for CN3 handheld operator / commissioning line.
A.C1	วงจรความปลอดภัย / HWBB Hardware Base Block	Hardware safety circuit open, normally closed emergency stop loop broken.
A.C8	Full-closed External Encoder Fault	Abnormal signal from external linear scale (only with full-closed option card).
A.CA	External Encoder A/B Phase Error	Fault in A/B phase signal of full-closed linear scale.
A.Cb	External Encoder Z-phase Error	Fault on home Z-phase signal of linear scale.
A.CC	Full-closed Position Deviation Excess	Full closed loop mode; large deviation between linear scale position and motor encoder.
A.d0	Position Deviation Excess	Position error exceeds Pn setting before positioning complete; ติดขัดทางกล, missing pulse command.
A.E7	RS485 Communication Fault	Broken communication cable with host controller, mismatched communication parameters.

Standby display bb: Not fault, Servo OFF, waiting for /S-ON enable signal.

SGDH CN1 (50-pin I/O Connector, Standard Factory Assignment. ⚠️OY custom version pin functions may be redefined by machine OEM!)

ตัวเชื่อมต่อ: 50Pin D-Sub. Separate external DC24V required for I/O circuit; input signals active low (เอ็นพีเอ็น).

🔹 Input Signals (Opto-isolated Input)

CN1 Pin No.	Signal ID	ชื่อสัญญาณ	คำอธิบาย
40	/S-ON	Servo ON	เปิดใช้งานเซอร์โว, ON = motor excitation
41	/P-CON	Proportional Control Switch / Mode Switch	Valid under position mode; switch PI / P control, also usable for home latch
42	P-OT	Positive Over-travel Inhibit	ปกติปิดครับ; open circuit disables forward movement (hard limit)
43	N-OT	Negative Over-travel Inhibit	ปกติปิดครับ; open circuit disables reverse movement (hard limit)
44	/ALM-RST	Alarm Reset	Falling edge clears servo alarm
45	/P-CL	Positive Torque Limit	Enable forward torque limiting
46	/N-CL	Negative Torque Limit	Enable reverse torque limiting
47	+24VIN	External 24V Positive	+24V supply for I/O
48	เอสจี	สัญญาณ GND	0V reference for I/O 24V

🔹 Output Signals (Open Collector / Relay Isolated)

CN1 Pin No.	Signal ID	ชื่อสัญญาณ	คำอธิบาย
31 / 32	ALM+ / เอแอลเอ็ม-	Servo Alarm Output	Conducts under normal condition; opens when alarm triggered (หน้าสัมผัสรีเลย์)
29 / 30	/S-RDY+ / /S-RDY-	เซอร์โวพร้อม	Conducts when no alarm and main power ready
27 / 28	/TGON+ / /TGON-	Motor Rotation Detection	Conducts when motor speed exceeds threshold
33 / 34	PAO / /PAO	Encoder A Differential Output	Encoder A phase, can feedback position to host PLC
35 / 36	ป.ป.ช / /ป.ป.ช	Encoder B Differential Output	Encoder B phase
19 / 20	PCO / /PCO	Encoder Z Differential Output	Home Z pulse
37,38,39	ALO1,ALO2,ALO3	Alarm Code Binary Output	3-bit binary alarm code for PLC reading
21 / 22	/COIN+ / /COIN-	Positioning Complete	Conducts under position mode when position error is within window
23 / 24	/V-CMP+ / /V-CMP-	Speed Match Detection	Conducts under speed mode when motor speed reaches command speed
25 / 26	/BK+ / /บีเค-	Brake Control Output	External motor brake relay control; output after servo excitation

🔹 Pulse Command Related (Position Mode)

CN1 Pin No.	Signal ID	ชื่อสัญญาณ
1-2	PULS / /PULS	Pulse Command (Differential Line Driver)
3-4	SIGN / /SIGN	Direction Command (Differential Line Driver)
5-6	PULS-O / SIGN-O	Open Collector Pulse / ทิศทาง (Single-ended command)

⚠ Important Remarks (SGDH-10DE-OY Specific)

OY suffix custom drive: CN1 I/O pin functions may differ from above table. OEM modified signal mapping in firmware. Direct replacement with standard SGDH-10DE will cause PLC logic mismatch: servo fails to enable, false limit trigger.
Use differential line driver pulse wiring for better noise immunity; single-ended pulse is prone to pulse loss for long cables with poor shielding.
Factory default P-OT/N-OT hard limits are normally closed loop. Be careful when shorting for commissioning; many machine faults originate from broken limit wiring.
ALM alarm output is passive relay contact. Do NOT connect 24V directly; series into PLC input circuit.

Supplementary Core Parameters (Sigma II SGDH)

Pn000: Control mode selection (ตำแหน่ง / ความเร็ว / แรงบิด)

Pn100: Position loop gain

Pn101: Position loop integral time

Pn102: Speed loop gain

Pn103: Speed loop integral time

Pn50A / Pn50B: CN1 I/O assignment (Locked on OY version, modified by OEM)

Repair Guide for Yaskawa SGDH-10DE-OY (Sigma II 400V 1kW)

⚠ Safety Precaution: 400V high voltage servo. DC bus capacitors retain high voltage after power off. Fully discharge before maintenance. Disconnect L1/L2/L3 and 24V control supply before repair. OY is OEM custom firmware. Parameters and I/O mapping differ from standard SGDH-10DE. Always back up original parameters before repair.

Common aging issue: อายุการใช้งานยาวนาน. Degraded electrolytic capacitors are the top hidden failure root cause for intermittent alarms.

Standard Troubleshooting Workflow (External first, isolate drive/motor fault)
Read alarm code: Via JUSP-OP05A hand operator or SigmaWin+, record alarm history.
External isolation test (Critical Step)

Disconnect U/V/W motor power cables, keep CN1 24V control power and CN2 encoder cable, power on without load.

Alarm still present at no load: Fault inside servo drive hardware.

No alarm at no load, alarm appears after connecting motor: Fault on motor, power cable or mechanical load.

Power-off static measurement (Diode mode on multimeter)

IGBT test: Measure U/V/W against DC bus P and N. Normal reading shows stable diode voltage drop. Direct short on any phase = IGBT breakdown.

Measure main fuse, charging resistor, rectifier bridge.

Inspect CN1/CN2 connectors for corrosion, bent pins and oxidation.

Disassemble inspection: Check capacitors for bulging / electrolyte leakage, PCB carbonization, burnt components, seized fan.
Component replacement → repair → parameter restore → no-load test → loaded commissioning

Critical note for OY version: Do NOT load standard SGDH factory default parameters, OEM custom I/O logic will be lost and machine stops working.

High-Frequency Fault & Repair Solutions
A.10 Overcurrent / ฮีทซิงค์ร้อนเกินไป (ที่พบบ่อยที่สุด)

อาการ: Alarm immediately after power-up or several seconds after servo enable

Alarm immediately on power up: IGBT breakdown, damaged drive optocoupler, faulty current detection circuit (7860 current sensor IC is a known SGDH series defect).

ซ่อมแซม: เปลี่ยนโมดูล IGBT, inspect drive optocoupler and gate resistors, replace faulty sampling resistors / detection IC.

No alarm at no load, alarm occurs after connecting motor: Motor inter-turn short, power cable earth fault, ติดขัดทางกล, seized bearing.

ซ่อมแซม: Megger test motor insulation, replace damaged cable, fix mechanical binding.

Alarm appears after running for a period: Dust buildup on heatsink, ริ้วรอย / stalled cooling fan and overheat protection.

ซ่อมแซม: Clean heatsink dust, replace cooling fan.

A.40 Overvoltage

อาการ: Alarm triggered during deceleration or shutdown

สาเหตุที่แท้จริง: Broken regenerative resistor, loose B1/B2 terminals; insufficient built-in regeneration capacity; aged DC bus capacitors; too short deceleration time.

ซ่อมแซม:

Measure resistance of B1-B2 regenerative resistor; replace if open or resistance drift.
Test main electrolytic capacitors; replace units with excessive ESR.
ขยายเวลาชะลอความเร็ว; install external regenerative resistor for frequent braking applications, modify Pn600/Pn603 parameters.
A.41 Undervoltage

อาการ: No display on panel or undervoltage alarm after power on

สาเหตุที่แท้จริง: 3-phase supply phase loss, poor contactor contact; burnt charging resistor; blown main fuse; aged bus capacitors; failed auxiliary switching power supply.

ซ่อมแซม:

Measure 3-phase input voltage.
Disassemble and inspect charging resistor (prone to open circuit on old units), main circuit fuse.
Test bus capacitor capacity and replace degraded capacitors.
Repair auxiliary power supply: replace damaged PWM IC and regulator circuit.
A.30 Regeneration Fault

อาการ: Brake circuit detection error

สาเหตุที่แท้จริง: Damaged regeneration transistor, loose B1/B2 terminals, faulty 358 op-amp (regeneration detection), damaged optocoupler.

ซ่อมแซม: Replace faulty op-amp and optocoupler, inspect brake IGBT, tighten B1/B2 terminals.

A.81/A.82/A.85/A.86 Encoder Alarms

อาการ: Encoder alarm immediately after enable or intermittent random alarm

สาเหตุที่แท้จริง: Oxidized / bent pins on CN2 encoder connector; broken / poorly shielded encoder cable; short circuit pulling down 5V encoder supply; encoder hardware failure.

ซ่อมแซม:

Replace shielded encoder cable and re-crimp CN2 connector.
Measure 5V output at CN2. If voltage low, repair on-board 5V supply of drive.
Repair or replace motor encoder if encoder itself is damaged.
ก.02 Parameter Corruption

อาการ: ก.02 alarm right after power on

สาเหตุที่แท้จริง: Damaged mainboard EEPROM; abnormal power-off causes parameter loss; failed backup battery on mainboard.

ซ่อมแซม: Replace EEPROM chip, write original OY version parameters. ⚠️ Do NOT load standard SGDH parameters, I/O logic mismatch will occur.

No display after power-up, panel dark

สาเหตุที่แท้จริง: Blown control circuit fuse, damaged auxiliary switching power supply, open startup resistor.

ซ่อมแซม: Repair auxiliary power board, replace fuse, startup resistor and PWM power chip.

A.71/A.72 Continuous Overload

อาการ: Overload alarm after running for a period

สาเหตุที่แท้จริง: ภาระทางกลที่มากเกินไป, bearing binding; degraded motor insulation; wrong inertia parameter; excessive gain setting.

ซ่อมแซม: Fix mechanical issues; test motor insulation; run inertia identification again and reduce position / speed loop gain.

Unique Repair Notes for SGDH-10DE-OY
Firmware Lock: OY suffix uses OEM custom firmware with modified CN1 I/O mapping. After replacing main control board, OY custom firmware must be flashed. Standard SGDH mainboard directly fitted will cause I/O logic failure and machine malfunction.
Parameter Backup First: Before repair, use SigmaWin+ to online read and fully backup all parameters. This is critical for post-recovery commissioning.
Motor Matching Restriction: ก.05 motor combination error easily occurs after drive or motor replacement. OY firmware binds matched motor model; random Sigma II motor replacement is not allowed.
Capacitor Replacement Recommendation: This model is very old. Full replacement of main circuit electrolytic capacitors is recommended as preventive maintenance, eliminates intermittent voltage-related alarms.
Post-repair Test Procedure
การทดสอบขณะไม่มีโหลด: Disconnect U/V/W, power on. Panel shows bb with no alarm. Enable servo and verify S-RDY ready output works correctly.
Reconnect wiring: Reconnect encoder cable and motor power cable, jog at low speed and check for vibration or abnormal noise.
ทดสอบโหลด: After passing no-load test, gradually apply load, monitor bus voltage and current to confirm no alarms.
Restore backed-up parameters, verify limit, เอาต์พุตแจ้งเตือน, positioning complete and other I/O signals.
Repair Cost Reference