Installation501SVC 440 795 M1100CL-DC2 expansion devices CL-LER.18DC2,CL-LET.20DC2Figure: 32: Supply voltage to DC expansion devicesCable protectionConnect a cable fuse protection (F1) of at least 1 A (slow) tothe CL-AC2 and CL-DC2 as well as to the display base module.0V0V24VL01-F1L01+24 VE+ E- R1 ... R12h CL-DC2 is protected against polarity reversal. To ensurethat the logic relay works correctly, ensure that thepolarity of each terminal is correct.h On initial power up both the logic relay and the displaybase module act as as a capacitor. Use a suitable devicefor switching on the power supply and do not use any reedrelay contacts or proximity switches.