Footprint comparison - Facility Explorer - LIT-12012045 - Field Device - N2 Controllers

Modernization Guide for N2 Controllers - Facility Explorer

Brand
Facility Explorer
Product name
N2 Controllers
Document type
User Guide
Document number
LIT-12012045
Revision date
2019-03-22
Language
English

AHUs came mounted in two different configurations: a tower configuration and a three-high Universal Packaging Module (UPM). If the AHU is a tower configuration, you must replace the entire tower with a new control panel. If the AHU is in a UPM, there should be enough space for an FX-PCA3611. However, you may need to relocate auxiliary gear.

The AHU controller's terminal board has a footprint slightly narrower but longer than an FX-PCA3611. Using the same enclosure space for replacement may require you to move auxiliary components, such as limit switches and electro-pneumatic transducers. Also, if an FX-PCX Expansion I/O Module is required to match the AHU's full I/O count, then additional enclosure space may be required.

Figure 1. Dimensional comparison of AHU versus FX-PCA3611 plus FX-PCX3711

Table 1. Dimensional comparison of AHU versus FX-PCA3611 and FX-PCX3711

Dimension

AHU (All Models)

FX-PCA3611

FX-PCX3711

Height

165 mm (6.5 in.)

150 mm (5.9 in.)

150 mm (5.9 in.)

Width

163 mm (6.4 in.)

220 mm (8 7 in.)

190 mm (7.5 in.)

Depth

56 mm (2.2 in.)

57.5 mm (2.3 in.)

53 mm (2.1 in.)