Baldor 22H series Installation & Operating Manual page 51

Section 1
General Information
Analog Inputs and Outputs
Analog Inputs
Analog Input #1
3-40 Receiving & Installation
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 3-19. Either analog input #1 or #2 may be grounded
provided the common mode range is not exceeded. Either analog input may be selected
in the Level 1 INPUT block, Command Select parameter value. Analog input #1 is
selected if parameter value "Potentiometer" is selected. Analog input #2 is selected if
parameter value "+/–10Volts, +/–5 Volts or 4-20mA" is selected. Figure 3-20 shows the
equivalent circuits of the Analog Inputs.
Figure 3-19 Analog Inputs and Outputs
Command Pot or
5K
0-5VDC or
0-10VDC
0-5VDC, 0-10VDC, 5VDC,
10VDC or 4-20mA
Programmable 0-5VDC
(Factory Preset: Speed)
Programmable 0-5VDC
(Factory Preset: Current)
Terminal Tightening Torque = 7 Lb-in (0.8 Nm).
Refer to Figure 3-21 for jumper position information.
Analog input #1 (J1-2) can be used when the control is set to Standard 3 Wire Mode, Fan
Pump 2 or 3 Wire, Bipolar or Process (not Keypad or 15 Speed 2 Wire modes). When
using a potentiometer as the command input, the Level 1 Input block COMMAND
SELECT parameter must be set to "POTENTIOMETER".
1. Connect the wires from the 5K
pot is connected to J1-1 (analog ground) and the other end is connected to J1-3
(reference voltage).
2. Connect the wiper of the pot to J1-2. The voltage across terminals J1-1 and
J1-2 is the speed command input.
3. A 0-10VDC speed command signal may be connected across J1-1 and J1-2
instead of a 5K
Analog Ground
Analog Input 1
Pot Reference
Analog Input +2
Analog Input -2
Analog Output 1
Analog Output 2
pot as shown in Figure 3-19. One end of the
pot.
MN722