Operation
Using External Amplifiers
Use connectors on top of controller to access necessary signals to run external amplifiers. For more information on
connecting external amplifiers, see Connecting to External Amplifiers in Chapter 2.
ELO Input
If the ELO input on the controller is triggered, then the amplifier will be shut down at a hardware level, the motors
will be essentially in a Motor Off (MO) state. TA3 will return a 3 and the #AMPERR routine will run when the
ELO input is triggered. To recover from an ELO, an MO then SH must be issued, or the controller must be reset.
It is recommended that OE1 be used for all axes when the ELO is used in an application.
-SSR Option
The AMP-43140 linear amplifier require a bipolar power supply. It is possible that the plus and minus (V+ and V-)
rise to nominal voltage at different rates during power up and any difference between voltage levels will be seen as
an offset in the motor. This offset may cause a slight jump during power up prior to the controller establishing
closed-loop control. When ordered with the –SSR option a solid state relay is added to the amplifier. This relay
disconnects the amplifier power from the motor power leads when the controller is placed in the motor-off state. If
the MO jumper is installed, or the MO command is burned into memory, the addition of the –SSR option will
eliminate any jump.
DMC-40x0 User Manual A2 – AMP-43140 (-D3140) • 244
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