According to the connection diagram, the two analog outputs are active, meaning that the supply variable 0 to 10 V signal. It should not be necessary to wire the M1 from output 1 to the 0Vdc out of your power supply, as this can leak noise; but should not burn the module. Obviously, the other equipment that is going to read the 0-10V signal must have the 0V wired to M1 to make a common reference, and sometimes is advisable to wire the 0Vdc supply on both equipment from the same power supply. This is, if you have two different power supply for two modules that are connected with a 0-10V signal, the 0Vdc should be the same in order to share a common reference for 0V.