ABB 5SHX2645L0002 Thyristor module

After the PG screw cap on the bus module is opened, both rotary switches, S1 and S2, become accessible for defining the station address for the valve block system in PROFIBUS-DP. Using S1 and S2, the station address can be assigned as desired from 1 to 99. The setting of the S1 rotary switch determines the tens place (set value * 10). The setting of the S2 rotary switch determines the ones place (set value * 1). The sum of the two settings provides the station address.

The S3 mode switch for setting the diagnostic messages is located below the PG screw cap.

Valve driver overload message Switch S3.1

If a particular switch is ON, the diagnostic message described is sent to the bus. Diagnostic message if a valve incorrectly shows a short circuit. The diagnostic message is only on as long as this valve is being triggered. The switching voltage must be 18 V in order to guarantee safe switching! Low voltage for the valves means that the UQ voltage must lie between 12 V and 18.5 V. If a voltage lower than 12 V occurs, this is reported as an emergency off message.

Assigning the valve supply

 Switches S4-S7 for assigning the valve supply are located below the PG screw cap. 4 valve positions (each with solenoids 12 and 14) are assigned to each switch. Each valve group can be assigned one of the two supply voltages, UQ1 and UQ2, via the position of the switches S4-S7. If, for example, the supply voltage UQ1 is fed through the emergency off and UQ2 is not, the valves that are supplied by UQ2 remain functioning in case of an emergency off.

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