Commissioning Procedure of the ElectronicPotentiometer Function Block
1.Instantiate the FB.
2.Connect the direction and acceleration commands (and speed maintain command in four-wire connection).
3.Connect the i_xDrvSlow input to a signal from a limit switch. It is possible to leave this input unconnected if a slow-down limit switch is not used in the system.
4.Nominal speed value given to the FB should match the nominal speed of the drive (compensated for slip if slip compensation is used)
For example, 1500 RPM for 2 pole pair motor, 3000 RPM for 1 pole pair motor.
5.i_wDrvSpdHsp, i_wDrvSpdLsp, i_wDrvAcc, i_wDrvDec, should match their counterparts in the setting of Altivar.
6.q_xDrvFwd and q_xDrvRev can be used to control the Altivar control function block if a short ramp time is set in Altivar configuration parameters.
In this case must be the direction command present until the drive decelerates on a speed profile generated by ElectronicPotentiometer function block. If the direction command is removed and the deceleration time configured in Altivar is shorter than deceleration time parameter of ElectronicPotentiometer FB, Altivar stops using its internal ramp rather than the one generated by ElectronicPotentiometer FB.
7.There are 2 speed reference outputs on the function block. q_wDrvSpdRef is an unsigned output which should be used with Altivar control device function blocks and q_iDrvSpdRef that can be used wherever a signed speed reference value is needed.
