PA7300 Instruction Manual - TECO-Westinghouse Motor Company

The follow shows the time chart when the UP/DOWN commands are used.FWD RUNUPCOMMANDDOWNCOMMANDUPPERLIMIT SPEEDLOWERLIMITE SPEEDOUTPUTFREQUENCYD1 H U H D H U H D D1 H U U1 H D D1 HU = UP (accel) statusD = DOWN (decel) statusH = HOLD (constant speed) statusU1 = During clamp at upper limit speed even in UP statusD1 = During clamp at lower limit speed even in DOWN statusNotes:1. When the UP/DOWN commands are used, set the Sn-04 1st digit. (frequency reference selection) asshown below.Set 1st digit = 0 without fail. .Setting 1st digit = 1 disables the UP/DOWN commands.2. When the UP/DOWN commands are selected, upper limit speed is set disregarding frequencyreference.Upper limit speed = maximum output frequency (Cn-02) × frequency reference lower limit (Cn-14)3. The largest value among minimum output frequency (Cn-07), frequency reference lower limit (Cn-15)and main frequency reference input from control circuit terminal VIN or AIN is employed as lower limitspeed.4. By inputting the FWD/REV run commands, operation is started at the lower limit speed even if theUP/DOWN command are not input.When the power supply is turned OFF in the HOLD status, the held output frequency is stored.Therefore, by inputting the FWD/REV run commands in the HOLD status continuously after the powersupply is tuned ON, operation is performed at the stored output frequency.5. When the jog run command is input during running by UP/DOWN commands, the jog run command haspriority.90