Servo Motor Operation
Using External Amplifiers
Use connectors on top of controller to access necessary signals to run external amplifiers. In order to use the full
torque limit, make sure the AG setting for the axes using external amplifiers are set to 0 or 1. Set the BR command
to 1 for any axis that will be setup to run external amplifiers (this will disable the hall error protection). For more
information on connecting external amplifiers, see Step 2b. Connecting External Amplifiers and Motors in Chapter
2.
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 return a 3 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 Informationsection 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.
A2 – AMP-43140 (-D3140) ▫ 195 DMC-41x3 User Manual
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