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Related Links
Jumper Selections on the OPTA1 Basic Board
=
A
B
C
e
3
0
b
g
0
1
4
.1
0
Illustration 41: Maximum Loads on +24 V/EXT+24 V Output
A
Maximum 150 mA
B
+24 V out
C
Maximum 250 mA
7.3.2.1 Digital Input Signal Inversions
The active signal level is different when the common inputs CMA and CMB (terminals 11 and 17) are connected to +24 V or to
ground (0 V).
The 24 V control voltage and the ground for the digital inputs and the common inputs (CMA, CMB) can be internal or external.
A
B
e
3
0
b
g
0
1
5
.1
0
DIN1
+24V
GND
DIN2
DIN3
CMA
+24V
GND
DIN1
DIN2
DIN3
CMA
Illustration 42: Positive/Negative Logic
A
Positive logic (+24 V is the active signal) = the input is active when the switch is closed.
B
Negative logic (0 V is the active signal) = the input is active when the switch is closed. Set the jumper X3 to the
position 'CMA/CMB isolated from ground'.
AQ275638903263en-000601 / DPD00910
90 | Danfoss A/S © 2022.12
Control Unit
VACON® NXS/NXP Air-cooled
Operating Guide
