KEB COMBIVERT F6 Instruction Manual

Also see for COMBIVERT F5: INSTALLATION GUIDELINE Installation manual Instruction manual Instruction manual Installation manual

Contents

GB - 33Connection Power UnitWiring example in PTC modeMixed sensor chainT1T2The function can be switched off with Pn.12 = “7“ (CP.28) if no evaluation of the input isdesired (standard in operating mode GENERAL). Alternatively a bridge can be installed be-tween T1 and T2.2.7.5 Connection of a braking resistorBraking resistors dissipate the produced energy of the motor into heat during gen-eratoric operation. Thus braking resistors can cause very high surface tempera-tures. During assembly pay attention to appropriate protection against contact andfire.The use of a regenerative unit is reasonable for applications which produce a lotof regenerative energy. Regeneration of excess energy into the mains.The mains voltage must always be switched off in order to guarantee fire protec-tion in case of a defective braking transistor.The frequency inverter remains in operation in spite of switched off power sup-ply in generatoric operation. An error must be released by external wiring whichswitches the modulation off in the inverter. This can occur e.g. at terminals T1/T2or via digital input. The frequency inverter must be programmed accordingly ineach case.The response threshold of the braking transistsor (Pn.69) for all controls withoutsafety technology must be adjusted at least to 770 Vdc (see annex D).