Control Signals4 -104.3 Using a 12-bit Digital Speed ReferenceThis section provides information on using a 12-bit digital speed reference input (for stand-alone drive systemsM5A only).J D1 through D12 (12-bit Digital References 1 through 12)Connector number: 1CNPin numbers: 19 through 3012-bit Digital Reference Signal Function Selection: 1CN-19 to 1CN-30 will be the 12-bit Digital Refer-ence if bit 07 of the C1-36 selection signals (SEL1) is turned OFF.Bit 7C1−36D Bit 7 is used for internal speed or digital speed settings.D It is possible to select 12-bit binary, 2-digit BCD, 3-digit BCD, or internal speed setting for digitalspeed references. Speed references are factory-set to 12-bit binary.D The setting method can be selected using bits 6 and 7 of selection signal C1-37 (SEL2).Bit 7 6C1−37D Selecting the Speed Setting6CN-5, 19 C1-37 (SEL2) Speed SelectionDAS Bit 7 Bit 6OFF --- --- Analog speedON OFF OFF 2-digit BCDOFF ON BinaryON OFF 3-digit BCDON ON Internal speedD The DAS signal can be switched only when the system is not in operation.D If the binary, BCD, or internal speed setting method is selected, the forward or reverse rotation of themotor is selected with the external FWD or REV relay signal.Internal Speed SettingNumber of speed settings: 8Speed set value: Input into C1-41 through C1-48 the percentages based on the rated speed set for C1-26(S100). Set range: 0.00 to 100.00Control Constant Signal Name 1CN Input Pin NumberC1-41 SPD1 Internal speed setting 1 D1 19C1-42 SPD2 Internal speed setting 2 D2 20C1-43 SPD3 Internal speed setting 3 D3 21C1-44 SPD4 Internal speed setting 4 D4 22C1-45 SPD5 Internal speed setting 5 D5 23C1-46 SPD6 Internal speed setting 6 D6 24C1-47 SPD7 Internal speed setting 7 D7 25C1-48 SPD8 Internal speed setting 8 D8 26D If two or more speed selection signals (D1 through D8) are turned ON at the same time, the smallerselection signal number will be enabled. (For example, if D2 and D5 are turned ON simultaneously,D2 will be enabled.)D If all speed selection signals are OFF, the speed references are treated as 0.D No speed reference values in C1-41 through C1-48 can be changed while the system is in operation.4
