CNCdrive DG4S Series, Manual

Page: 16 / 22

16 CONTENTS
5.6 Mixing the Reset and Error lines
The error line acts as an opencollector output which means that many error lines can be
connected together (paralelled or in other words OR wired).
The reset line is an input and therefor any number of reset lines may be also wired to-
gether.
It is also allowed to wire the error lines and the reset lines together. With making this con-
nection we get a “common error/reset line” for a drive or for any number of drives in the
setup.
If this common error/reset line is pulled to GND potential by external logic, it works as if
it was just a reset line and the drive stops operation. If the line is released by the external
logic, the drive(s) automaticly resets and starts operation again.
If an internal fault occurs in any of the drives in this chain, the commoned error/reset line is
pulled to GND potential by the drive which got the fault, but because the reset line is also
connected to the same wire, the drive automaticly resets itself. In this automatic reset pro-
cedure a short approximately 300msec long low pulse is generated on the common error/
reset line which an external logic may read and may do the required steps of operation.
As mentioned the drives automaticly resets with this mixed connection of the error and
reset lines and with this connection there is no need to use any external logic to force the
drives to reset after a fault.
Ofcourse individual reset and error line handling is also possible, it is only an option to
mix the error and reset lines. It depends on the application if this connection mode is
useful or not.