User’s Manual for FD430 Digital 2-Phase Stepper Driver
User’s Manual for FD430 Digital 2-Phase Stepper Driver
9 10
4. Control Signal Mode Setting
Pulse trigger edge and single/double pulse selection:
By PC software (ProTuner
software) or STU debugger set the rising or falling edge trigger of the pulse is a valid,
and set single or double pulse mode. In the double-pulse mode, the signal at the direction
control terminal must be kept high or left floating.
5. Wire Connection
1) In order to improve anti-interference performance of the driver, it is recommended to
use twisted pair shield cable, and the shield is shorted to ground, Except for special
requirements, the shielded wire of the control signal cable is also shorted to
single-ended ground. The upper end of the shielded wire is grounded, and the driver
end is floating. Only allowed on the same point grounding in the same machine, If it is
not a real ground wire, the interference may be serious, and the shielding layer is not
connected at the time.
2) To prevent noise incurred in PUL/DIR signal, pulse/direction signal wires and motor
wires should not be tied up together. It is better to separate them by at least 10 cm,
otherwise the disturbing signals generated by motor will easily disturb pulse direction
signals, causing motor position error, system instability and other failures.
3) If a power supply several drivers, parallel connection is recommend instead of
daisy-chaining.
4)
It is prohibited to pull and plug power connector P2 while the driver is powered ON,
because there is high current flowing through motor coils (even when motor is at
standstill). Pulling or plugging power connector P2 with power on will cause
extremely high back-EMF voltage surge, which may damage the driver.
5)
It is strictly forbidden to add lead to the terminal after adding tin, otherwise the
terminal may be damaged due to the increased contact resistance.
6)
Lug must not be exposed outside the terminal to prevent accidental short circuit and
damage to the driver.
Ⅳ
.
Driver Current Output, Selecting Microstep Resolution
and Parameter auto-tuning function
This FD430 driver uses an 8-bit DIP switch to set microstep resolution, motor dynamic
current, standstill half-current, motor parameters and internal adjustment parameters
auto-tuning, as shown below:
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
1
.
Current Setting
1
）
Dynamic current Setting
RMS Current
SW1
SW2
SW3
SW4
0.1A
on
on
on
on
0.2A
off
on
on
on
0.3A
on
off
on
on
0.5A
off
off
on
on
0.6A
on
on
off
on
0.7A
off
on
off
on
0.8A
on
off
off
on
1.0A
off
off
off
on
1.2A
on
on
on
off
1.3A
off
on
on
off
1.5A
on
off
on
off
1.6A
off
off
on
off
1.7A
on
on
off
off
1.8A
off
on
off
off
2.0A
on
off
off
off
2.2A
off
off
off
off
2
）
Standstill
Current Setting
The standstill current can be defaulted to automatic half current.
2. Microstep Resolution Selection
Steps/rev
SW5
SW6
SW7
SW8
Resolution Description
Default[200]
on
on
on
on
When SW5,SW6,SW7
and SW8 are on, the
driver uses the default
number of resolution
within the driver. Use PC
ProTuner software or
STU debugger to set the
number of resolutions,
the minimum value is 1,
the resolution is 1, and
the maximum value is
51200.
400
off
on
on
on
800
on
off
on
on
1600
off
off
on
on
3200
on
on
off
on
3600
off
on
off
on
6400
on
off
off
on
12800
off
off
off
on
1000
on
on
on
off
2000
off
on
on
off
4000
on
off
on
off
5000
off
off
on
off
7200
on
on
off
off
8000
off
on
off
off
10000
on
off
off
off
20000
off
off
off
off
Dynamic current Setting
Microstep Resolution Setting
