ABB i-bus KNX - Page 5

ABB i-bus
®
KNX
Contents
FCA/S 1.x.x.1 | 2CDC508134D0202 iii
Planning and application ............................................................................. 237
4.1 Fan output ................................................................................................................................ 238
4.1.1 Fan operation ........................................................................................................................... 238
4.1.1.1 Fan with changeover switch ..................................................................................................... 240
4.1.1.2 Fan with step switch ................................................................................................................. 240
4.1.2 Automatic operation .................................................................................................................. 240
4.1.3 Direct operation ........................................................................................................................ 242
4.1.4 Switchover between automatic and direct operation ................................................................ 242
4.1.5 Speed switching logic ............................................................................................................... 243
4.1.6 Fan operation functional diagram ............................................................................................. 244
4.2 Switch output ............................................................................................................................ 245
4.2.1 Function diagram ...................................................................................................................... 245
4.2.2 Time function ............................................................................................................................ 246
4.2.2.1 Staircase light ........................................................................................................................... 246
4.3 Valve drives, valves and controller ........................................................................................... 247
4.3.1 Electromotor Valve Drives ........................................................................................................ 247
4.3.2 Electrothermal Valve Drives ..................................................................................................... 247
4.3.3 Control types ............................................................................................................................ 248
4.3.3.1 Continuous control .................................................................................................................... 248
4.3.3.2 Pulse width modulation (PWM) ................................................................................................. 249
4.3.3.3 Pulse width modulation – calculation ........................................................................................ 251
4.4 Reaction on bus voltage failure, recovery, download and ETS reset ........................................ 252
4.4.1 Bus voltage recovery ................................................................................................................ 252
4.4.2 Bus voltage recovery ................................................................................................................ 252
4.4.3 ETS reset .................................................................................................................................. 253
4.4.4 Download.................................................................................................................................. 253
4.5 Priorities.................................................................................................................................... 254
A Appendix .......................................................................................... 255
A.1 Scope of delivery ...................................................................................................................... 255
A.2 Status byte General .................................................................................................................. 256
A.3 Status byte outputs A, B, C, D .................................................................................................. 257
A.4 Status byte fan .......................................................................................................................... 258
A.5 Ordering details ........................................................................................................................ 259
A.6 Notes ........................................................................................................................................ 260