PSR8078 User Manual
REV1.0 1
1. Introduction, Features and Applications
1.1 Introduction
The stepper drive PSR8078 is a high performance microstepping driver based on
pure-sinusoidal current control technology. Owing to the advanced technology, it could output
smaller noise, lower heating, smoother movement and have better performances at higher
speed than most of the drivers in the markets. It is suitable for driving 2-phase and 4-phase
hybrid stepping motors.
1.2 Features
High performance, cost-effective
Supply voltage up to +80VDC
Output current up to 7.8A
Automatic idle-current reduction
Pulse input frequency up to 300 KHz
Pure-sinusoidal current control
technology
TTL compatible and optically isolated
input signals
14 selectable resolutions in decimal and binary,
up to 51,200 steps/rev
Suitable for 2-phase and 4-phase motors
Short-voltage, over-voltage and short-circuit
protection
1.3 Applications
The stepper drive PSR8078 is suitable for a wide range of stepping motors from NEMA 34 to
NEMA 42, which is widely used in various kinds of machines, such as CNC routers, cutting
machines, packing devices, pick-place devices, and so on. Particularly suitable for the
applications require low cost, low noise, low heating and high speed performance.
2. Specifications
2.1 Electrical Specifications (T
j =
25°C)
Parameters
PSR8078
Min
Typical
Max
Unit
Output current
2.8
-
7.8 (5.6 RMS)
A
Supply voltage
+24
+60
+80
VDC
Logic signal current
7
10
16
mA
Pulse input frequency
0
-
300
kHz
Isolation resistance
500
MΩ
PSR8078 User Manual
REV1.0 2
2.2 Environmental and Other Specifications
Operating
Environment
Ambient
temperature
0 to +50 °C (+32 to +122 °F)
(non-freezing)
Humidity
90% or less (non-condensing)
Altitude
Up to 1000 m (3300 ft.) above sea level
Surrounding
atmosphere
No corrosive gas, dust, water or oil
Storage
environment
Ambient
temperature
-10 to +70 °C (+14 to +158 °F)
(non-freezing)
Humidity
90% or less (non-condensing)
Altitude
Up to 3000 m (10000 ft.) above sea level
Surrounding
atmosphere
No corrosive gas, dust, water or oil
Heat sinking method
Natural Cooling or fan-forced cooling
Weight
Approx. 550 gram
2.3 Mechanical Specifications (unit=mm, 1 inch=25.4 mm)
Figure 1: Mechanical dimensions
*Recommend use side mounting for better heat dissipation
