<R48> says “each CIM motor … must be connected to one and only one approved speed controller.” Is it okay to use one controller to run multiple CIMs, though?
No. <R41> specifically bans multiple loads on one power-regulating device, with an exception for low-load solenoid valves on a relay module.
It sounds like you are just trying to get 2 motors to run in sync, which can be done easily with 2 jaguars or Victor speed controllers. this can be achieved by running a Y cable from the signal bus to the 2 speed controllers. This can also be solved by programming both signals to be triggered to go off at the same time.
I really wish they would let us connect two low power motors to the same speed controller (like two window motors) to save on cost and complexity. They used to let us do it, but sadly is against the rules now.
The Jaguar has a useful Sync feature that allows you synchronize multiple Jaguars to one Sync command. This feature is only available if you are using CAN to communicate with the Jaguars.
For example, you might have two motors for your drivetrain, one for each side, and you want them to start moving in unison. Using the Sync command you can set the voltage output of both Jaguars, but keep them from updating the until they receive the Sync command again.
This can be easily demonstrated using BDC-COMM and a couple of Jaguars on the CAN bus.
- Go to Voltage mode and press the Sync button.
- Change the voltage for a couple of Jaguars.
- Notice that the Jaguars maintain their current output setting.
- Now press the Sync button again and watch the Jaguars change in unison.
-David