The following considerations apply when you physically mount the unit:
- To achieve maximum heat dissipation and meet the operating temperature upper limit, mount the FX90 Supervisory Controller horizontally. Any other mounting orientation reduces the upper limit.
- It is best practice to mount the FX90 Supervisory Controller on a 35 mm wide DIN rail. The controller's unit base features a molded DIN rail slot and locking clip, as do the option modules. DIN rail mounting ensures alignment of the connectors between the devices.
- Up to four option modules are supported.
- Dimensions of a unit appear in the following figure. Figure 1. Mounting dimensions of FX90 Supervisory Controller and expansion modules
Callout Description 1 FX90 Supervisory Controller dimensions 2 Expansion module. Up to four may be used. See Expansion modules and IO configurations. 3 Distances between the center of the tabs from one unit to another unit