Marine Applications; Figure 8: Diagram For Determining The Max. Cable Lengths In Marine - WAGO 750 XTR Manual

40 Device Description
The limitations on the cable length do not apply if the PWM module has a
separate power supply unit (via a supply module, e.g., potential supply
750-602/040-000).
3.7.1.3

Marine Applications

When used in marine applications according to Class A, a maximum permissible
cable length applies (cable capacitance wire to screen of max. 170 pF/m)
depending on the frequency:
Figure 8: Diagram for Determining the max. Cable Lengths in Marine Applications per Class A
The limitationss on cable length do not apply if an approved WAGO power supply
unit is used for field supply (see table "WAGO Power Supplies for Field Supply in
Marine Applications".)
In marine applications according to Class B, an approved field power supply
must be used, e.g., one of the following WAGO power supplies:
Manual
Version 1.0.0
WAGO I/O System 750 XTR
750-677/040-000 4PWM 24 VDC 0.2A XTR