I.Introduction
UV printer is a kind of high-tech plate-free full-color digital printing press, which is free from material restrictions and can be used for color photo-level printing on the surface of various materials.
Advantages of UV printer: no need to make a plate for one printing, beautiful and rich color, wear resistance, anti-ultraviolet ray, simple and convenient operation, fast printing, fully in line with industrial printing standards.

Application Industry: It can be widely used in leather textile industry, gift processing industry, label marking industry, decoration industry, glass industry, furniture door-moving industry, label industry, exhibition and display industry, rigid cardboard packaging industry, etc.
The equipment has a wide range of printing materials: Flexible media, such as cloth, plastic, timely posting, PVC, reflective film, carpet, leather, etc. Hard media, such as glass, ceramic tile, metal, ceiling, aluminium board, wood board, door board, acrylic board, plexiglass board, foam board, corrugated board, etc
II. Functional Characteristics of Equipment
(1) The optimization of printing process subtracts some traditional processes, such as plate-making, film-making and color-matching. The printing process is fast and low-cost, and various output software, support various file formats.
(2) UV ink spraying and drying, better printing fastness. Reliable technical guarantees have been obtained in such technical difficulties as nozzle control, weak solvent ink printing control, color curing strength and medium transmission accuracy.
(3) UV printer uses the latest LED cold light source technology, without thermal radiation.
(4) Instantaneous lighting does not require preheating, with low surface temperature of printed materials but not deform.
(5) With the latest generation of sprinklers and intelligent distribution of ink dot size, it has higher printing accuracy than traditional UV machines.
(6) Using water cooling (water circulation) method, it can also have a good light curing effect in summer without air conditioning environment.
III. System Construction and Debugging Requirements
Servo Configuration: K1ADS08AA, K1AD08AB
Motor model: Y axis 80ST-M02430; X axis 60 middle inertia 400W
Principle: The system sends pulses to control the operation of the printing part, and calculates the position of the motor through the external grating ruler, so as to determine the distance of the spray printing.

System	DB44 Pin #	Signal
APULS	3	A axis Pulses +
APULS-	18	A axis Pulses -
ASIGN+	4	A axis Direction +
ASIGN-	19	A axis Direction -
BPULS	5	B axis Pulses +
BPULS	20	B axis Pulses -
BSIGN+	6	B axis Direction +
BSIGN-	21	B axis Direction -

 
IV. Setting of Relevant Parameters

Parameter #	Setting Value	Define
PA000	0011	Position mode
PA005		Motor code
PA006		Factory code
PA100	1600	Speed loop gain
PA101	10000	Speed loop integral
PA102	200, 110	Position loop gain
PA109	0,50	Feed forward
PA110	0,50	Feed forward filter time
PA205	50	Position command acceleration /deceleration time
PA509	9909	Internal servo-on
PB000	0011	Position mode
PB005	4	Motor code
PB006	20	Factory code
PB100	800	Speed loop gain
PB101	2000	Speed loop integral
PB102	200	Position loop gain
PB109	50	Feed forward
PB110	50	Feed forward filter time
PB509	9909	Internal servo-on

 
V. Debugging results
1. The position command acceleration and deceleration time P205 are set to 500, which can meet the requirements of smooth operation.
2. Setting position ring ratio P102 to 110, P205 to 50, can meet the requirements, and no jitter and glide in continuous operation.
The waveforms in continuous operation under PA100 = 2600, PA101 = 10000, PA 102 = 110, PA 103 = 500 parameters in Fig. 1 below, do not appear "crawling" phenomenon when the integral of speed loop increases.

Picture 1 Continuous operation effect
 
The system point motion waveform under PA100 = 2600, PA101 = 10000, PA102 = 110, PA103 = 500 parameters in Fig. 2 below, shows runs smoothly and meets customer requirements.