Baldor mn722 manual Analog Inputs, Analog Input #1, Parameter Selection, Analog Input #2

Analog Inputs	Two analog inputs are available: analog input #1 (J1-1 and J1-2) and analog input #2
	(J1-4 and J1-5) as shown in Figure 3-12. Either analog input may be selected in the
	Level 1 INPUT block, Command Select parameter value. Analog input #1 is selected if
	the parameter value is “Potentiometer”. Analog input #2 is selected if the parameter
	value is “+/-10Volts, +/-5 Volts or 4-20mA”. Figure 3-13 shows the equivalent circuits of
	the Analog Inputs.

Figure 3-12 Analog Inputs and Outputs
		J1
	Analog GND	1
Command Pot or
	Analog Input 1	2
0-10VDC
	Pot Reference
5KW		3
± 5VDC, ± 10VDC or 4-20 mA Input	Analog Input +2	4
	Analog Input -2	5

Analog Input 1

Analog Input 2

	See recommended terminal tightening torques in Section 7.
Analog Input #1	When using a potentiometer as the speed command, process feedback or setpoint
(Single Ended)	source, the Level 1 Input block COMMAND SELECT parameter must be set to
	“POTENTIOMETER”.
	Note: A potentiometer value of 5kW to 10kW, 0.5 watt may be used.

Parameter Selection

The single ended analog input #1 can be used in one of three ways:

1.Speed or Torque command (Level 1 Input block, Command Select=Potentiometer).

2.Process Feedback (Level 2 Process Control block, Process Feedback=Potentiometer).

3.Setpoint Source (Level 2 Process Control block, Setpoint Source=Potentiometer).

When using Analog Input #1, the respective parameter must be set to

“POTENTIOMETER”.

Analog Input #2	Analog input #2 accepts a differential command 0-5VDC, 0-10VDC, ± 5VDC, ± 10VDC or
(Differential)	4-20 mA. If pin J1-4 is positive with respect to pin 5, the motor will rotate in the forward
	direction. If pin J1-4 is negative with respect to pin 5, the motor will rotate in the reverse
	direction. JP1 must be set for voltage or current operation as required. Analog Input #2
	can be connected for single ended operation by grounding either of the inputs, provided
	the common mode voltage range is not exceeded.
	Note: The common mode voltage can be measured with a voltmeter. Apply the
	maximum command voltage to analog input 2 (J1-4, 5). Measure the AC and
	DC voltage across J1-1 to J1-4. Add the AC and DC readings together.
	Measure the AC and DC voltage from J1-1 to J1-5. Add the AC and DC
	readings together.
	If either of these measurement totals exceeds a total of ± 15 volts, then the
	common mode voltage range has been exceeded. To correct this condition,
	either change the command source or isolate the command signal with a
	signal isolator.

MN722 Receiving & Installation 3-19