Installation instructions 1. Product description The SAP 20 is a power supply unit suitable for an E-Bus and has an output voltage of 12 V at a maximum of 2.3 A. The housing offers space for 7 type SMT 11 (transponder) or SMR 11 (isolator/amplifi...
Page 2
3.2.1 Power supply unit circuit board SMP 20 (Fig. 2) - Transformer terminal Y 20V, 50Hz. - Relay R which can be programmed from the central control unit. - Four +12 V voltage outputs W (+1, +3, +4, +6) each of which is protected by a fuse (F2 to F5).
E-Bus (B1-, B2, B3, B4+). It may be routed in parallel to other accessories. If shielded cable is used, the shield may not be laid on the housing of the SAP 20. The shields of all cables must be connected at one point, e.g. at one of the NC...
6. Close and seal the housing (Fig. 9) 1 - Glue the circuit diagram to the inside of the cover Q. 2 - Engage the cover in the retainer. 3 - Connect the earthing lead W to the cover. 4 - Lightly lift and close the cover. 5 - Tighten cover retaining screws.