Merganzer
Member
Hi,
I'm using an Allen~Bradley PLC, Micrologix 1500, 1764-24AWA Base Unit and the Allen~Bradley 1769-OB32 DC Output Expansion Card.
The AC drive is a Siemens Micromaster Vector.
I want to use digital connections to control the drive from the PLC. The problem here is that the DC output card requires a common return(-DC) but I cant find the common return from the drive. I have the control connection diagram for the drive, and it doesnt specify a common return.
Suggestions?
I'm using an Allen~Bradley PLC, Micrologix 1500, 1764-24AWA Base Unit and the Allen~Bradley 1769-OB32 DC Output Expansion Card.
The AC drive is a Siemens Micromaster Vector.
I want to use digital connections to control the drive from the PLC. The problem here is that the DC output card requires a common return(-DC) but I cant find the common return from the drive. I have the control connection diagram for the drive, and it doesnt specify a common return.
Suggestions?