Control Unit; Nxl Compact (Mf2 - Mf3); Nxl Hvac (Mf4 - Mf6); Allowed Option Boards In Nxl Hvac - Honeywell NXL User Manual

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6.2

Control unit

6.2.1 NXL Compact (MF2 – MF3)
The control unit of the NXL frequency converter is integrated with the power unit and consists roughly of
the control board and one optional board, which can be connected to the slot connector of the control
board.
6.2.2 NXL HVAC (MF4 – MF6)
In NXL HVAC frames MF4-MF6 there are two option board connectors SLOT D and SLOT E (see Figure
6-19).
Figure 6-19. Option board slots D and E in frames MF4 – MF6
6.2.2.1

Allowed option boards in NXL HVAC:

See below for the allowed option boards in the two slots on NXL HVAC frequency converters:
C2
SLOT D
AA
SLOT E
In NXL HVAC series the option board NXLOPTAI is included in all deliveries as standard. The free slot
D is meant for additional fieldbus boards.
When two option boards are used, the one in slot E has to be NXLOPTAI or NXLOPTAA. It is not allowed
to use two NXOPTB_ or NXOPTC_ boards. Also combinations of NXOPTB_ and NXOPTC_ –boards are
prohibited.
See descriptions for NXLOPTAA and NXLOPTAI option boards in chapters 10 and 11.
Cabling and connections
Slot E: I/O boards, fieldbus boards and expanders
Slot D: Fieldbus boards
E
D
C3 C4 C6 C7 C8
B1 B2 B4 B5
AI
CI CJ
B9 C2 C3 C4 C6
43(96)
C7 C8 CI CJ
6