Wiring connections comparison - Metasys - LIT-12012005 - Field Device - N2 Controller

Wiring connections comparison - Metasys - LIT-12012005 - Field Device - N2 Controller - 13.0

Modernization Guide for N2 Controllers - Metasys

Product

Network and Communications > N2 Controls > N2 Controller

Document type

User Guide

Document number

LIT-12012005

Version

13.0

Revision date

2023-10-16

Table 1. Wiring connection similarities, differences, and implications for a VAV1xx and FEC
Attribute	VAV1xx	FEC	Implication
I/O Wiring
Connection Location	See Figure 1.	See Figure 1.	You can reuse the existing I/O wiring if the existing wiring is long enough to reach the FEC's I/O wiring connection points. If not, you need to lengthen the wiring.
Connection Type	Spade lug connectors	Fixed screw terminal connectors	Remove spade lug connectors from I/O wiring.
N2 Wiring
Connection Location	See Figure 1.	See Figure 1.	You can reuse the existing N2 wiring if the existing wiring is long enough to reach the FEC's N2 connection point. If not, you need to lengthen the wiring.
Connection Type	Removable, 3-wire screw terminal connector	Removable, 4-wire screw terminal connector	Replace the UNT's N2 wiring connector with the FEC's N2 connection point.
Power Supply Wiring
Connection Location	See Figure 1.	See Figure 1.	You can reuse the existing power supply wiring if the existing wiring is long enough to reach the FEC's power supply connection point. If not, you need to lengthen the wiring.
Connection Type	Spade lug with removable 2-wire screw terminal connector	Removable, 3-wire screw terminal connector	Remove existing connectors from power supply wiring and use FEC's screw connector.

Figure 1. Wiring layout comparison of VAV1xx versus FEC1611

Table 2. Wiring connection similarities, differences, and implications
Attribute	VAV1xx	VMA1832	Implication
I/O Wiring
Connection Location	See Figure 2.	See Figure 2.	You can reuse the existing I/O wiring if the existing wiring is long enough to reach the VMA1832's I/O wiring connection points. If not, you need to lengthen the wiring.
Connection Type	Spade lugs	Spade lugs	No change is necessary, but be careful when matching the I/O number.
N2 Wiring
Connection Location	See Figure 2.	See Figure 2.	You can reuse the existing N2 wiring if the existing wiring is long enough to reach the VMA1832's N2 connection point. If not, you need to lengthen the wiring.
Connection Type	Removable 3-wire screw terminal connector	Removable 4-wire screw terminal connector	Remove connector from the existing N2 wiring and use the VMA1832's screw connector.
Power Supply Wiring
Connection Location	See Figure 2.	See Figure 2.	You can reuse the existing power supply wiring if the existing wiring is long enough to reach the VMA1832's power supply connection point. If not, you need to lengthen the wiring.
Connection Type	Spade lug with removable 3-wire screw terminal connector	2-wire removable screw terminal connector	Remove existing connectors from power supply wiring and use VMA1832's screw connector.

Figure 2. Wiring comparison of VAV1xx versus VMA1832