Danfoss VACON NX All-in-One Application Manual page 130

VACON® NX All-in-One
Application Guide
Jumper block X3:
CMA and CMB grounding
CMB connected to GND
CMA connected to GND
CMB isolated from GND
CMA isolated from GND
CMB and CMA internally
connected together,isolated
from GND
= Factory default
Illustration 21: Jumper Selections
230 VAC
22
RO1
23
Autom. Mains
O
S1
K2
K2
K1.1 K1
K1 K1.1
M1/Vacon M1/mains
Illustration 22: Pump Autochange System, Principal Control Diagram
130 | Danfoss A/S © 2023.02
VACON OPT-A2
24 VDC
DIN2
12
9
Autom. Mains
O
S2
K1
K1
K2.1 K2
K2 K2.1
M2/Vacon M2/mains
Pump and Fan Control Application
25
RO2
DIN3
10
26
AB296635287482en-000301 / DPD00903