User Manual

Table Of Contents
Controller Powering Schemes
Advanced Digital Motor Controller User Manual 23
increases by around 20V the low voltage threshold at which the controller will start operat-
ing when powered from VMot alone.
The table below shows the state of the controller depending on the voltage applied to
Power Control and VMot.
TABLE 1-1. Controller Status depending on Power Control and VMot
Power Control input is
connected to
And Main Battery
Voltage is Action
Ground Any Voltage Controller is Off. Required Off
Configuration.
Floating 0V Controller is Off. Not Recom-
mended Off Configuration.
Floating Above VMotMin (1) Controller is On.
Power Stage is Active (2)
7V to max PwrCtl (3) Volts Any Voltage Controller is On.
Power Stage is Active (2)
Note 1: VMotMin = 7V on all controller rated up to 60V. VMotMin = 28V on all controllers rated above
60V. See product datasheet
Note 2: Power Stage is active but turned off when overvoltage or undervoltage condition.
Note 3: 35V max on 30V controllers. 60V max on all products rated above 30V
Note: All ground terminals (-) are connected to each other inside the controller. On dual
channel controllers, the two VMot main battery wires are also connected to each other
internally. However, you must never assume that connecting one wire of a given battery
potential will eliminate the need to connect the other. When pre-charging the controller’s
capacitors, the Power Control input must be grounded. See the note on capacitor pre-
charging on page 25. “Capacitor precharging”
Controller Powering Schemes
Roboteq controllers operate in an environment where high currents may circulate in
unexpected manners under certain condition. Please follow these instructions. Roboteq
reserves the right to void product warranty if analysis determines that damage is due to
improper controller power connection.
The example diagram on Figure 1-2 on page 24 shows how to wire the controller and
how to turn power On and Off. All Roboteq models use a similar power circuit. See the
controller datasheet for the exact wiring diagram for your controller model.