User manual

Connecting the device MCA1215 – MCA2440

8.5 Setting the DIP switches

You can adjust the device using the DIP switch.

S1 is used to set the voltage at which the device switches over from the

I phase (bulk) to the U0 phase (absorption) (also see chapter “Battery charg-

ing function” on page 48). S3 must be set to “OFF”.

S2 is used to set the retention voltage. S3 must be set to “OFF”.

When a battery sensor is connected, the output voltages is adapted to the

temperature for these two functions:

 MCA 12xx: –20 mV/°C

 MCA 24xx: –40 mV/°C

S3 activates the power mode when either S1 or S2, or both, are set to “Off”.

In power mode, the short circuit, overvoltage and overheating protection are

controlled by the internal sensor.

When S1, S2 and S3 are set to “On”, then the function control by external

devices is activated. Among others the type of battery and the charging

voltage are set using the external device in this mode.

S4 regulates the fan function. When S4 is set to “On”, then the fan is switched

to sleep mode (noise-reduced mode). When S4 is set to “Off”, then the fan is

not regulated.