Bedienhandbuch
2.4.4 Power supply
As the Power supply will be used a 24 V
DC
power connector or optional the external 230 V
AC
power supply on the rear of the unit.
2.4.4.1 24V
DC
power supply
Type: Phoenix - MSTB-03G
Pin
Signal
Description
1 GND
Ground
/
Minus
2 GND
Ground
/
Minus
3
+24V
Power 24V
DC
2.4.4.2 230 V
AC
power supply (optional)
The AC/DC power supply unit (24 V
DC
) is fixed by a bracket on the rear of the unit.
The connector of the DC-24V supply line will be plugged into the DC interface of the
SCD1900.
The cables will be fixed depending from the version with cable clips or binder to avoid
unintended disconnection of the plug from the device.
2.5
Electrical Installation
Before connecting the SCD1900 to the power supply, it should be checked if the signal-
connector is plugged in properly and that the screws are tightened.
There are many possible reasons why an image might fail to appear on the display after it
has been switched on:
•
no signal connected
•
no synchronization signal connected
•
horizontal and vertical synchronization signals are connected the wrong way round
SIMATIC HMI SCD1900
Seite 16 / 29
DOC-No.: SCD1900 MANUAL.DOC
