8.5Change-over contact

A potential-free change-over contact is located on the rear panel of the PROTECT D. series to provide for external, potential-free signaling to a e.g. building services management system. For the exact pin allocation, refer to the label next to the base. The contact load is 250Vac 3A, respectively 30Vdc 3A.

Depending on the application, different messages can be allocated to the contact using the operating panel (see Chapter 7.3.6 on pg. 49ff “Relay configuration”).

Use a flexible wire with a cross section of min. 0.5 mm2 up to max. 2.5 mm2. Replace the plug and lock the insert into place in the base by tightening the outer screws.

9 Troubleshooting

9.1Malfunctions

The PROTECT D. issues detailed error messages to help you or the maintenance staff to localize and interpret any malfunctions that may occur quickly and with high precision. In the following, please find process / solution suggestions to eliminate the problem that has occurred.

If you cannot solve the current problem, terminate the entire process, switch the UPS off and disconnect it from the power supply. In this case, call our hotline (see pg. 5).

Make sure that you have the serial number of the device and the purchasing date handy. The hotline will provide you with technical support and tell you what to do after you have described the problem.

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