ABB单通道单向驱动功能块Individual Drive Function for Unidirectional Units, IDF_1.doc

Individual Drive Function for Unidirectional Units, IDF_1 Function The single-channel individual drive function relays a control command to technical control equipment (e.g. electric motor with single direction of rotation, solenoid valve) in the process. This command can come from a higher-ranking control (automatic operating mode) or take place manually (manual operating mode). The operating mode inputs MM and MA have priority over operating mode selection, i.e. the selection of the operating modes manual/automatic is enabled only if both inputs are on logic-0 signal. If both inputs are on logic-1 signal, the manual operating mode has priority over automatic. The output of the control command OUT can be made dependent on safety, inhibit, local intervention and error signals. After the control command has changed, the time is monitored as run time until feedback occurs (end position reached). The feedback can be external (feedback variable available) or internal. If the run time is exceeded an error message appears. Arrival at end positions 0 or 1 is signaled to inputs FB0 or FB1. Leaving the end position without control command is signaled as an error. The respective state of the control output OUT is not changed. End position monitoring takes places irrespective of whether or not run-time monitoring is activated. If a local signal LOC is present, this ignores any end-position errors that there may be and resets them. Run time and end position monitoring only takes place if feedback inputs are connected. Inhibition inputs Changes in the output of the control command OUT for commands 0 and 1 can be prevented separately using inputs IL0 and IL1. Inhibition applies in manual and automatic operating modes. Safety intervention The inputs PR0 and PR1 act directly on the control command. If signals are applied simultaneously PR0 has priority, i.e. the control command is canceled. Local intervention If the signal LOC is applied, the control element receives its signals from a local transmitter. In this case the function module retains its operating mode and tracks its output OUT to the end positions (input FB0 and FB1). Fault The FLT signal cancels the control command and switches to operating mode manual. The subsequent response after a fault signal has been transmitted depends on the parameters relating to Reaction after trouble. A transmitted fault is cleared by operating mode Automatic or a control command in Manual. The priorities of the interventions are: 1. Processing 2. Local intervention 3. Safety intervention 4. Fault 5. Inhibition Operating modes: Manual Automatic The following table describes the operation of the control, safety and local inputs: Control inputINSafety intervention OffPR0Safety intervention OnPR1Local interventionLOCControl commandOUT00000100010100011000001011010101100111000001x:x1111xx are corrected to the end positions Display Name, short text. Two state fields with the configured command texts which indicate the switch state of the individual drive modules (Pins FB0, FB1). The text of the switch state at that moment in time is displayed on a yellow background, and the text of the non-active state on a dark-gray background. When the control command is disabled (pin IL0, IL1 or configuration), text is displayed in gray and the non-active switch state on a gray background An arrow shows the current direction of motion of the control element. The direction-of-motion arrow flashes when the control element is running. In the event of an end-position error or a run-time error, the end position to be attained is indicated by a static direction-of-motion arrow in the faceplate. The monitoring time configured is indicated by RT. Operating mode manual or automatic is indicated by buttons M and A. A past safety intervention is indicated by black text on white background. This display will be reset in automatic or after an operation intervention. The following messages are displayed depending on the signals (it is possible to change the texts within the parameter mask): During a fault signal When run time is exceeded On leaving the end position without control command During safety intervention signals During lo