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 12: Jumper Selections
5.3 Control Signal Logic in Multi-step Speed Control Application
3.2 Keypad reference
Preset Speed 1
DIN4
Preset Speed 2
DIN5
Preset Speed 3
DIN6
AI1
AI2
Start forward
DIN1
(programmable)
DIN2
Start reverse
(programmable)
Fault reset input
DIN3
(programmable)
Illustration 13: Control Signal Logic of the Multi-step Speed Control Application
Danfoss A/S © 2023.02
Reference from fieldbus
Start/Stop from fieldbus
Direction from fieldbus
Programmable
Start/Stop and
reverse logic
3.3 Keypad direction
2.1.11 I/O Reference
2.1.12 Keypad Ctrl Reference
2.1.13 Fieldbus Ctrl Reference
2.1.15 Preset Speed 1
...2.1.29 Preset Speed 15
2.1.14 Jogging speed
3.1 Control place
Reset button
Start/Stop buttons
Start/Stop
Reverse
≥ 1
AB296635287482en-000301 / DPD00903 | 47
Multi-step Speed Control
Application
reference
Internal frequency
reference
Internal Start/Stop
Internal reverse
Internal fault reset
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