Description

 

 

 

1 x PQL7208 Stepper Motor Driver 7.2A 24-75vDC

 

 

• Input voltage DC: 24-75VDC
• Output current Peak: 0-7.2A
• Pulse Frequency: 0-200KHz

 

• PQL7208 is a new digital stepper motor driver. It adopts the latest 32-bit DSP digital processing technology. The drive control algorithm adopts advanced variable current technology and advanced frequency conversion technology. The driver has small heating, small motor vibration and stable operation. Users can set any subdivision within 200 ~ 51200 and any current value in the rated current to meet the application needs in most occasions. Thanks to the built-in micro-subdivision technology, the subdivision effect can be achieved even under the condition of low subdivision. The operation is smooth and the noise is ultra-small under low, medium and high speed. The driver integrates the parameter auto-adjust function, which can automatically generate optimal operating parameters for different motors to maximize the performance of the motor.​

 

Instruction	PQL7208
	Minimum	Typical	Maximum	Unit
The output current	0.1	-	7.2	A
Input voltage	24	48	75	VDC
Control signal input current	6	10	16	mA
Control signal interface level	4.5	5	28	Vdc
Input signal minimum pulse width	1.5	-	-	us
Stepper pulse frequency	0	-	200	KHz
Insulation resistance	100			MΩ

 

• New 32-bit DSP technology
• Ultra-low vibration noise
• Built-in high subdivision
• Automatic parameter adjustment function when power on
• Variable current control reduces the heating of the motor
• The current automatically halve at rest
• Can drive two phase stepping motors of 4, 6, 8 lines
• Optical isolation differential signal input
• The pulse response frequency can reach to 500KHz（Factory default 200KHz）
• The current setting is convenient and can choose between 0.1 to 7.2A
• Subdivision setting range is between 200 to 51200
• Has the protection function of overpressure, underpressure and overcurrent

 

 

 

 

 

• Static current can set by SW4 DIP switch settings, off means the static current is set to half of dynamic current, on means static current and dynamic current is the same. SW4 should be set to off for general use, can reduce the heating of the motor and the driver. About 400ms after the pulse train stopped it will automatically reduced to half current (60% of the actual value), the heat will reduced to 30% theoretically .

 

 

Subdivision setting

 

Step/Rev.	SW5	SW6	SW7	SW8	Subdivide description
400	on	on	on	on	Subdivision Description: The driver subdivision adopts the internal default subdivision. Users set the subdivision number through the PC software ProTuner or STU debugger, the minimum value is 1, the resolution Is 1, the maximum is 51200.
800	off	on	on	on
1600	on	off	on	on
3200	off	off	on	on
6400	on	on	off	on
12800	off	on	off	on
25600	on	off	off	on
51200	off	off	off	on
1000	on	on	on	off
2000	off	on	on	off
4000	on	off	on	off
5000	off	off	on	off
8000	on	on	off	off
10000	off	on	off	off
20000	on	off	off	off
40000	off	off	off	off

 

• PQL7208 with Nema34 series and parallel connection method (if the motor is different from the desired direction of rotation, only need exchange A +, A- ), PQL7208 driver can drive four-, six- or eight-wire two-phase / four-phase motor. The following figure is detail of the 4-wire, 6-wire, 8-wire stepper motor connection: