©NationalInstruments Corporation 7 MID-7654/7652Servo Power Motor Drive User Guide
Amplifier Fault Output LEDs
The toprow of the LED status array indicates the status of the amplifiers.
Ared LED indicates an overcurrent condition, a short circuit condition,an
overtemperature condition, or a problem with the motor bus voltage on that
axis.
Amplifier Inhibit LEDs
The middle row of the LED status array indicates if a motor axis is
inhibited. An axis is inhibited and the LED illuminates yellow if the host
bus interlock circuitry is activated from the back panel, if the ENABLE
switchon the front panel is in the inhibit position, if the motioncontroller’s
inhibits ignal is low, or if the per-axis inhibit input is actively driven. You
canselect the polarity of the per-axis inhibit input from the front panel DIP
switches.See the Front Panel DIP Switch Settings sectionof this guide for
more information.
Limit Status LEDs
The bottomr ow ofthe LED status array indicates if a limit switch is
currently active.The LED illuminates green when either the forward or
reverselimit switch is active for each axis. You can select the polarity for
the limit status LEDs from the front panel DIP switches. See the Front
Panel DIP Switch Settings of this guide for more information.
Table1. Front Panel LED Indicators
Status Motor Axis
AmplifierFault Output (red) 1 2 3*4*
AmplifierInhi bit (yellow) 1 2 3*4*
Limit Status (green) 1 2 3*4*
*TheseLEDs only appear on the MID-7 654.