Operation
ELO Input
If the ELO input on the controller is triggered, the amplifier will be shut down at a hardware level, the motors will
be essentially in a Motor Off (MO) state. TA3 will change state and the #AMPERR routine will run when the ELO
input is triggered. To recover from an ELO, an MO followed by a WT 2, and an 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.
See the Optoisolated Input Electrical Information section in Chapter 3 Connecting Hardware for information on
connecting the ELO input.
-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 amplifier. 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 due to the power supply.
Using External Amplifiers
Use the connectors on top of the controller to access necessary signals to run external amplifiers. For more
information on connecting external amplifiers, see Step A in Chapter 2.
A2 – AMP-43140 (-D3140) ▫ 221 DMC-40x0 User Manual
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