Layout Protection - Unitronics UMI-B1 UL Series Operation Manual

UMI-B1 UL Series Inverter
3.2.6 Input/Output signal connection figure
Use U-shaped contact tag to set NPN mode or PNP mode and the internal or external
power supply. The default setting is NPN internal mode.
If the signal is from NPN transistor, set the U-shaped contact tag between +24V and PW
as below according to the used power supply.
S1
S2
COM
PW
+ 24V
If the signal is from PNP transistor, set the U-shaped contact tag as below according to
the used power supply.
S1
S2
COM
PW
+ 24V

3.3 Layout protection

3.3.1 Protecting the inverter and input power cable in short-circuit situations
Protect the inverter and input power cable in short circuit situations and against thermal
overload.
Arrange the protection according to the following guide.
U-shaped contact
tag between
+24V and PW
Figure 3-8 U-shaped contact tag
COM
+ 24V
Figure 3-9 NPN modes
COM
+ 24V
Figure 3-10 PNP modes
19
U-shaped contact
tag between
COM and CME
S1
S2
COM
COM
+ 24V
+ 24V
PW
+ 24V
S1
S2
COM
COM
+ 24V
PW
+ 24V
Installation guide