2-16 Hardware Overview
Motion Coordinator Euro205(X)
Trio Motion Technology
Open Collector Stepper Driver Outputs
The STEP, DIR, BOOST and ENABLE signals use open-collector outputs. These out-
puts are NOT opto-isolated from the processor logic. The open-collector outputs
may be pulled up to any voltage in the range 5v..24v as required but a current
limiting resistor MUST be provided externally to the Euro205(X) to limit the cur-
rent in the output channel. Normally this current limiting resistor is built-in to
the stepper amplifier circuit.
On the Euro205 the BOOST output shares a pin with the registration input for that
axis. The BOOST output is normally used in stepper motor systems, and the Reg-
istration input is used to capture encoder positions. There is not therefore nor-
mally a conflict. The BOOST output should not be turned ON on an axis where
the registration input is used otherwise the BOOST output will be overloaded.
The BOOST outputs are separate from the registration function on the Euro205X.
The open-collector outputs are protected by 2 resettable fuses. These fuse links
will go high impedance if a total of more than 200mA is passed through a group of
open-collector outputs. M6 protects STEP0, STEP1, STEP2, STEP3, DIR0, DIR1 and
DIR2. M7 protects DIR3, REG(BOOST)0, REG(BOOST)1, REG(BOOST)2,
REG(BOOST)3 and ENABLE. If any outputs are overloaded it is necessary to
remove the power from the circuit in order to reset the fuses.
Fault and Reset Inputs
Fault is a non-isolated 5 volt input for connection to stepper amplifier fault out-
puts. Signals connected to this input should NOT exceed 5volts.
The Reset input can be momentarily connected to 0v to reset the Euro205(X).
Signals connected to this pin must not exceed 5 volts.
Open-Collector
Output
M6 / M7 Resettable Fuse
Ov
Control Signal
from Logic
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