A2.3 Analog Master, Mode 1; A2.3.1 External Analog Input; A2.3.2 Speed Potentiometer Input; A2.3.3 Mode 1 Parameters - Seco DS9000 Installation & Operation Manual

A2.3 ANALOG MASTER, MODE 1

A2.3.1 EXTERNAL ANALOG INPUT

An isolated analog 0-10 volt or 4-20 mA signal, directly proportional to the desired motor speed, is
required to set the DS9000A Speed Reference. The signal must be isolated and must not exceed 14
volts in amplitude. Please refer to section A2.2.1 for connection information.

A2.3.2 SPEED POTENTIOMETER INPUT

Instead of an external signal, a potentiometer may be used to provide an analog speed reference.
Connection points, as shown in section A2.2.1, for the potentiometer are as shown:
Clockwise terminal -
Wiper (Center terminal) -
Counter-clockwise terminal - PIN 3 (COMMON)
The Speed potentiometer resistance value should be 2K to 10K, 2watt. A 10-turn potentiometer is
recommended due to the fine resolution and high accuracy of the DS9000A.

A2.3.3 MODE 1 PARAMETERS

Parameters used in this mode include:
LO – Sets the motor speed desired with minimum input,
0 Volts, 4 mA, or full CCW speed pot, rotation.
LO may be set from 0 to 1/3 the value of SCF0. Default setting is 0.
HI – Sets the motor speed desired with full input,
10 Volts, 20 mA, or full CW speed pot. rotation.
HI may be set from 2/3 the value of SCF0 to the value of SCF0. Default setting is 1800.
ACEl - Acceleration Time – See DS9000 I.M. Section 1.8
DCEl – Deceleration Time – See DS9000 I.M. Section 1.8
FEd0 – Sets the feedback resolution for the controlled motor.
FEd0 is set for MAXIMUM FEEDBACK FREQUENCY in Hertz
((RPM x PPR)/60) divided by 30. See DS9000 I.M. Section 4.1.1
SCF0 – Sets the scale factor, or units to be displayed.
SCF0 allows the display, in TACH mode, to show units other than motor RPM if desired. For
example, Feet/Minute may be displayed for a conveyor or Gallons/Hour for a pump. SCF0 is set by
entering the desired readout when full input signal is applied.
SCd0 – Places a decimal point in the display.
SCd0 can be used to increase display resolution when SCF0 is set to a low number. For example, if 0-
10 volts corresponds to 0-1 foot/minute, SCd0 should be set to 3, to move a decimal point to three
places from the right, giving a display of 0.000 to 1.000.
PE – Proportional Error Gain – See DS9000 I.M. Section 5.0
IE – Integral Error Gain – See DS9000 I.M. Section 5.0
PIN 9 (+10VDC)
PIN 4 (REFERENCE)
A7