I/O CONNECTOR 2
AMPLIFIER ENABLE (WATCHDOG) RELAY OUTPUTS
An internal relay contact is
available to enable external
amplifiers when the
controller has powered up
correctly and the system
and application software is
ready. The amplifier enable
is a solid-state relay with an
ON resistance of 25Ω at
100mA. The enable relay will be open circuit if there is no power on the controller OR a
motion error exists on a servo axis OR the user program sets it open with the WDOG=OFF
command.
The amplifier enable relay may, for example, be incorporated within a hold-up circuit or
chain that must be intact before a 3-phase power input is made live.
ANALOGUE INPUTS
Two built-in 12 bit analogue inputs are provided which are set up with a scale of 0 to
10V. External connection to these inputs is via the 2-part terminal strip I/O connector 2.
A 24V d.c. supply must be applied to I/O connector 1 to provide power for the analogue
input circuit.
ANALOGUE OUTPUTS
The MC403-X has 2 12-bit analogue outputs scaled at +/-10V. Each output is assigned to
one servo axis, or in the case where the axis is not used, or is set as a
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