Modular Towers (208/230/460V)

Applicable Models

• 10' Modular Tower Models (10530 - 101375)

• 12' Modular Tower Models (12-20-100 - 12-28-150)

The variable frequency drive controls the speed of the sweep arms for all tower dryers. The communication from the HMI to the PLC then correlates to the variable frequency drive. It is important to note that some of the parameters listed below will vary such as voltage, amperage and motor speed. These values should match the motor name plate.

Dip switches must both be set to ON for SIEMENS S7-1200.

If programmed by hand, upload to panel, then download full set to drive.

Applicable Voltages

• 208V/3ph

• 230V/3ph

• 460V/3ph

• 230V/1ph

Parameters

The following parameters apply to the dryer model(s) and voltage(s) as shown.

Motor Data

These parameters depend on machine voltage

Parameter	Description	MC Setting	Factory Default
99.04	Control Mode	Scalar-Freq	Scalar-Freq
99.06	Nominal Current	14.0 A (208V/3ph) 12.7 A (230V/3ph) 6.4 A (460V/3ph) 12.7 A (230V/1ph)
99.07	Nominal Voltage	208 V (208V/3ph) 230 V (230V/3ph) 460 V (460V/3ph) 230 V (230V/1ph)
99.08	Nominal Frequency	60 Hz	60 Hz
99.09	Nominal Speed	1725 RPM
99.10	Nominal Power	5 HP

Standard AI

Parameter	Description	MC Setting	Factory Default
12.15	Unit Selection	mA	V
12.17	AI1 Minimum	0.00	0
12.18	AI1 Maximum	20.00	10
12.19	AI1 Scaled at AI1 Min	0.00	0
12.20	AI1 Scaled at AI1 Max	60.00	60

Start / Stop / Direction

Parameter	Description	MC Setting	Factory Default
20.01	Ext 1 Commands	In1 Start	In1 Start; In2 Dir
20.04	Ext 1 in 2 Source	Always Off	DI2
20.11	Run Enable Stop Mode	Coast	Coast
20.12	Run Enable 1 Source	DI3	Selected
20.21	Direction	Forward	Request

Start / Stop Mode

Parameter	Description	MC Setting	Factory Default
21.01	Start Mode	Fast	Automatic

Frequency Reference Chain

Parameter	Description	MC Setting	Factory Default
28.22	Constant Freq Select 1	Always Off	DI3
28.23	Constant Freq Select 2	Always Off	DI4
28.71	Freq Ramp Set Select	Acc / Dec Time 1	DI5
28.72	Freq Acc Time	3.00	20
28.73	Freq Dec Time	3.00	20

Limits

These parameters depend on machine voltage

Parameter	Description	MC Setting	Factory Default
30.13	Min Frequency	5.00	-60
30.14	Max Frequency	60.00	60
30.17	Max Current	17 A (208V/3ph) 13.5 A (230V/3ph) 7.8 A (460V/3ph) 13.5 A (230V/1ph)

Panel Display

Parameter	Description	MC Setting	Factory Default
Options	Edit Home View	DI Delayed Status	Torque