Q2BYG403MD Driver User’s Manual
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3.3.6 Wiring requirements:
(1) To prevent the Driver from interference, it is recommended to use
shielded cable for signal control, and short connect the shielding layer
and ground wire; unless otherwise specified, ground one end of the
shielding cable that controls signal cable: ground the upper computer
end of the shielded cable, and leave the Driver end of the shielded cable
floating. In the same machine, only one point can be grounded; if the
ground wire isn’t true, it may cause serious interference, and the
shielded layer isn’t connected at this moment.
(2) Pulse and direction signal wires can’t be bundled together, and keep
at least 10cm clearance, or else the motor noise will interfere with the
pulse and direction signal, cause inaccurate motor positioning, instable
system and other faults.
(3) If one power supply is provided to several Drivers, it is required to
connect them in parallel, rather than in chain.
(4) Do not insert or remove the strong current CN1 terminal of the
Driver when the power is still on. The motor still has large current
through the coil even when it is stopped, and inserting/removing CN1
terminal will cause instantaneous induced EMF and burn out the Driver.
(5) It is strictly prohibited to add tin to the lead head and connect to the
terminal, or else the terminal may be damaged due to large contact
resistance and overheating.
(6) The wire connector can’t expose out of the terminal, to avoid
damaging the Driver due to short circuit.
3.5 DIP switch setting
Q2BYG403MD step Driver uses 8-bit DIP switch to set the output
current, subdivision precision, quiescent current and self-tuning of
parameters. The front view of DIP switch is shown below:
Fig. (2) Front View of DIP Switch