User’s Manual for FD556 Digital 2-Phase Stepper Driver
User’s Manual for FD556 Digital 2-Phase Stepper Driver
5 6
3.
Mechanical Dimensions (unit: mm, 1 inch = 25.4 mm)
Figure 1: Mechanical dimensions
*
Recommended to use side mounting for better heat dissipation, When designing
the installation size, pay attention to the terminal size and wiring.
4. Elimination of Heat
1
）
Driver’s reliable working temperature should be <60
℃
, and motor working
temperature should be <80
℃
(176
℉
);
2
）
It is recommended to use automatic idle-current mode, namely current
automatically reduce to 50% when motor stops, so as to reduce driver heating and
motor heating;
3
）
It is recommended to mount the driver vertically to maximize heat sink area. Use
forced cooling method to cool the system if necessary, Ensure that the drives
operation in a reliable operating temperature range.
Ⅲ
.Pin Assignment and Description
1. Interface description
1
）
Control Signal Connector
Signal
Functions Details
PUL+
Pulse signal: This input represents pulse signal, each rising edge active,
4.5~28Vdc when PUL-HIGH, 0~0.5V when PUL-LOW, For reliable
response, pulse width should be longer than 1.5μs.
PUL-
DIR+
Direction signal: this signal has low/high voltage levels, representing two
directions of motor rotation; For reliable motion response, DIR signal
should be ahead of PUL signal by 2μs at least. 4.5V-28Vdc when
DIR-HIGH, 0-0.5V when DIR-LOW. Please note that rotation direction is
also related to motor-driver wiring match. Exchanging the connection of
two wires for a coil to the driver will reverse motion direction.
DIR-
ENA+
Enable signal: This signal is used for enabling/disabling the driver. High
level for enabling the driver and low level for disabling the driver. When
ENA-HIGH is connected to 4.5V-28Vdc, ENA-LOW is connected to
0-0.5V (or Internal optical coupling is conducted), the driver will cut off
the current of each phase of the motor to make the motor in a free state,
step pulses are not responded at this time. Usually left
unconnected
(enabled)
.
ENA-
2
）
Power Connector Configurations
Signal
Functions Details
GND
Power Ground.
+Vdc
Power supply, +24V~ +50Vdc Including voltage fluctuation and EMF
voltage, Recommended 36Vdc supply.
A+
、
A-
Motor coil A (leads A+ and A-)
B+
、
B-
Motor coil B (leads B+ and B-)
3
）
RS232/RS485 Communication Port
Special RS232 cable (Prohibition of charging plug) designed to setup communication
between the drive and PC-based configuration & tuning software ProTuner. The PC
software is used to configure the peak current, microstep, active level, current loop
parameters and the driver function, and so on.
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112
34
112
22.
5
4.
5
4-
Ф
3.5
75.
5
25.
3
47.
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