Unitronics UMI-B1 UL Series - Keypad Operation Procedure; Keypad Components and Display

UMI-B1 UL Series Inverter Installation guide
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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.
U-shaped contact
tag between
+24V and PW
U-shaped contact
tag between
COM and CME
Figure 3-8 U-shaped contact tag
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
COM
+24V
S1
S2
COM
PW
+ 24V
COM
+24V
+ 24V
Figure 3-9 NPN modes
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
COM
+24V
S1
S2
COM
PW
+ 24V
COM
+24V
Figure 3-10 PNP modes
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.