GD350-19 Serires VFD Drive for Crane

Features
Specification
Application
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1. Professional protection for safer operation
• Travel limit protection: Integrated upper/lower limit and deceleration limit functions to restrict crane operation within a designated range, ensuring safety while optimizing stop modes and improving equipment efficiency.
• Slack rope protection: Prevents accidents caused by rope slack during high-speed hoisting, malfunctions in acceleration, or rope failure.
• Smooth hoisting: Automatically reduces speed when the hook lifts a load during high-speed operation, ensuring smooth hoisting and minimizing impact on the crane.
• Zero servo: Locks the motor at zero speed, maintaining hold even under external force. In brake failure cases, ensures safe suspension or controlled descent.
• Anti-snag protection: Emergency stop if unexpected contact occurs during hoisting.
• STO (SIL2): Cuts off torque output to prevent accidental startup, allows system monitoring for quick recovery.
• Braking short-circuit protection: Protects against braking resistor short circuits with ultra-high torque.

2. Safe and reliable, no creeping
• Dedicated brake logic: Integrated torque verification ensures brake is released only after sufficient torque is built.
• High torque at low frequency: PG vector: 0Hz/200%, space vector: 0.5Hz/150% rated torque.

3. Ease of use
• Excellent load adaptability: Hoisting-specific algorithm adapts torque to varying loads.
• Crane-specific macros: One-click parameter setup for hoisting applications.
• One-click open/closed-loop switching: Fast recovery from encoder failure without runtime impact.
• Multiple control modes: Supports joystick, motorized potentiometer, remote, and communication control modes.

4. Tower crane rotation control
• Anti-eddy current control: Eliminates eddy current during rotation, enabling quick reverse braking and low-speed positioning.
• Smooth rotation control: Built-in algorithm ensures stable operation and improved efficiency.

5. Cost reduction and efficiency improvement
• 3-group motor switching: Reduces cost with time-based control. Macro parameters auto-switch even in master-slave scenarios.

6. Supports special motors
• Conical rotor motor: Flux regulation ensures fast brake control and easy debugging.
• Double-winding motor: Reliable dual-winding control.
• Outer-rotor motor: Supports non-integer gear ratios with built-in stable control algorithms.

7. High-efficiency operation
• Anti-sway function: Sensorless control suppresses swing for improved precision and efficiency.
• Light-load speed-up: Optimized speed control shortens crane cycles.
• Positioning stop: Closed-loop positioning for trolley, travel, and hoisting systems.
• Master-slave control: Ensures power balance and speed synchronization, supports flexible configurations.

Description		Specifications
Power input	Input voltage (V)	AC 3PH 380V (-15%)–440V (+10%) Rated voltage: 380V AC 3PH 520V (-15%)–690V (+10%) Rated voltage: 660V
	Input current (A)	For details, see "Product ratings".
	Input frequency (Hz)	50Hz or 60Hz; Allowed range: 47–63Hz
	Input power factor	≥0.9 for 30–110kW
Power output	Output voltage (V)	0–Input voltage (V)
	Output current (A)	For details, see "Product ratings".
	Output power (kW)	For details, see "Product ratings".
	Output frequency (Hz)	0–150Hz
Technical control performance	Control mode	Space voltage vector control Sensorless vector control (SVC) Feedback vector control (FVC)
	Motor type	Asynchronous motor and permanent magnetic synchronous motor
	Speed ratio	1:200 (SVC) 1:1000 (FVC)
	Speed control accuracy	± 0.2% (SVC) ± 0.02% (FVC)
	Speed fluctuation	± 0.3% (SVC) ± 0.02% (FVC)
	Torque response	< 20ms (SVC) < 10ms (FVC)
	Torque control accuracy	10% (SVC) 5% (FVC)
	Starting torque	For asynchronous motors: 0.25Hz/150% (SVC) For synchronous motors: 2.5Hz/150% (SVC) 0Hz/200% (FVC)
	Overload capacity	150% for 1 minute, 180% for 10 seconds, and 200% for 1 second
	Braking capability	100% for long time, 120% for 1 minute, and 170% for 10 seconds
Running control performance	Frequency setting method	Settings can be implemented through digital, analog, pulse frequency, multi-step speed running, simple PLC, PID, Modbus communication, PROFIBUS communication and so on. Settings can be combined and the setting channels can be switched.
	Automatic voltage regulation	The output voltage can be kept constant although the grid voltage changes.
	Fault protection	More than 30 protection functions, such as protection against overcurrent, overvoltage, undervoltage, overtemperature, phase loss, and overload.
Peripheral interface	Terminal analog input resolution	No more than 20mV
	Terminal digital input resolution	No more than 2ms
	Analog input	Two inputs; AI1: 0–10V/0–20mA; AI2: -10–10V
	Analog output	One input; AO1: 0–10V/0–20mA
	Digital input	Four regular inputs; max. frequency: 1kHz; internal impedance: 3.3kΩ Two high-speed inputs; max. frequency: 50kHz; supporting quadrature encoder input; with speed measurement function
	Digital output	One high-speed pulse output; max. frequency: 50kHz One Y terminal open collector output
	Relay output	Two programmable relay outputs RO1A: NO; RO1B: NC; RO1C: common RO2A: NO; RO2B: NC; RO2C: common Contact capacity: 3A/250VAC, 1A/30VDC
	Extended interfaces	Three extended interfaces: SLOT1, SLOT2, and SLOT3 Supporting PG cards, programmable cards, communication cards, I/O cards and so on Note: 1. You can install optional expansion cards for 1.5–5.5kW VFD models and you are recommended to install them at slot 2. 2. I/O expansion card 2 has been installed at slot 3 for 7.5kW and higher VFD models as standard configuration.
I/O expansion card 2	Relay output	Two programmable relay outputs. Contact capacity: 3A/250VAC, 1A/30VDC RO3A: NO; RO3C: common; RO4A: NO; RO4C: common
	Digital input	Four regular inputs; supporting PTC input only with DC power supply, while PTC acts at 2.5kΩ Internal impedance: 6.6kΩ Max. input frequency: 1kHz Supporting internal power 24V Supporting the voltage input of external power (-20%)24–48VDC(+10%) and (-10%)24–48VAC(+10%) Bidirectional input terminals, simultaneously supporting NPN and PNP connection methods
	PT100 input	Independent PT100 and PT1000 input: 1. Resolution: 1°C 2. Range: -20°C–+150°C 3. Detection accuracy: ±3°C 4. Supporting offline protection
	PT1000 input
Other	Installation method	Supports wall-mounting, floor-mounting and flange-mounting.
	Temperature of running environment	-10°C–+50°C. Derating is required when the temperature exceeds 40°C.
	IP rating	IP20
	Pollution degree	Degree 2
	Cooling method	Forced air cooling
	DC reactor	Standard built-in part for 380V 18.5–110kW VFD models. Optional external part for 380V 132kW and higher models and for 660V models.
	Braking unit	Standard built-in part for 380V 110kW and lower VFD models. Optional external part for 660V models.
	EMC filter	Supporting built-in C3 filters (optional). If a C3 filter is required, connect the jumper J10. After a C3 filter is configured, the VFD can meet IEC61800-3 C3 requirements. Supporting external filters (optional). After an external filter is configured, the VFD can meet IEC61800-3 C2 requirements.