KERN MBC M, Руководство по обслуживанию, Страница: 5 / 9

MBC-M-SH-e-1310 5
3.5 Load Cell Connections
Signal + Green
Supply + Red
Signal -
Black
Supply -
White
Shield
Measuring Points
Resistance
Red (+ Exc) to White (
–Exc) 420 ±20Ω
Green (+Sig) to Black (
–Sig) 350Ω ±5Ω
3.6 Checking the different Voltages
If the problem is in the PCB, use a multimeter to check the following voltages
AC Power
Check the AC power socket out put voltage.
Adaptor Voltage
Check the adaptor output cable connecter voltage
Compare the value with the name plate on the scale
PCB Input Voltage
Check the PCB input power connecter voltage
Voltage must be minimum 9VDC in to the pin AD+
Check Battery Voltage and Charging Voltage
Check the Battery Voltage ,
Voltage must be minimum 6VDC. If below the 6VDC connect the adaptor for charging
The battery voltage below the 5.5VDC, replace the battery and install new 6V/3.4Ah battery.
Check the Battery Charging Voltage;
Remove the battery connection terminals (Red and Black) from the battery. Connect the power
and turn on the scale Voltage into the terminal minimum 6.5VDC