Baldor 22H series Installation & Operating Manual page 52

Section 1
General Information
Analog Input #2
MN722
Analog input #2 accepts a 0-5VDC, 0-10VDC, 5VDC, 10VDC or 4-20 mA command
input. The operating mode is defined in the of the Level 1 Input block OPERATING
MODE parameter.
Note: Analog Input #2 is used with Standard Run 3-Wire, Fan Pump 2 or 3 Wire,
Bipolar or Process Control modes (not available for Keypad, 15 Speed 2 Wire
or the Serial operating modes).
1. Connect the Analog Input 2+ wire to J1-4 and the 2– wire to J1-5.
2. If using 4-20mA as the command signal, JP1 must be across pins 2 and 3.
For voltage input, jumper JP1 must be on pins 1 and 2 see Figure 3-21).
Note: 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. 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. If the common mode
voltage range has been exceeded, the solution is either to change the
command voltage source or isolate the command voltage with a commercially
available signal isolator.
Receiving & Installation 3-41