Menu 7
Parameter
structure
Keypad and
display
Parameter x.00
Parameter description
format
Advanced parameter
descriptions
Serial comms
protocol
Performance
108 Mentor MP Advanced User Guide
www.controltechniques.com Issue Number: 4
5.8 Menu 7: Analog I/O
Hardware
The drive has three analog inputs (AI1 to AI3) and two analog outputs (AO1 and AO2). Each input has a similar parameter structure and each output
has a similar parameter structure. The nominal full scale level for inputs in voltage mode is 10 V. This ensures that when the input is driven from a
voltage produced from the drive's own 10 V supply, the input can reach full scale.
Update rate
The analog inputs are sampled every 4 ms except where the destinations shown in the table below are chosen, the input is in voltage mode and other
conditions necessary for short cutting are met.
Analog outputs are updated every 4 ms except when one of the following is the source and high speed update mode is selected. In high speed mode
the output operates in voltage mode, is updated every 250 μs, special scaling is used as described in the table and the user scaling is ignored.
Terminal Input Input modes Resolution
5/6 AI1 Voltage only 14 bit plus sign
7 AI2 0 to 6 10 bit plus sign
8 AI3 0 to 9 10 bit plus sign
Terminal Output Output modes Resolution
9 AO1 0 to 3 10 bit plus sign
10 AO2 0 to 3 10 bit plus sign
Input destination Sample rate
Pr 1.36 - Analog reference 250 μs
Pr 1.37 - Analog reference 250 μs
Pr 3.22 - Hard speed reference 250 μs
Pr 4.08 - Torque reference
250 μs
Al1, Al2 or Al3
Output source Scaling
Pr 3.02 = {di05, 0.40} - Speed 10.0 V = SPEED_MAX
Pr 4.01 = {di08, 0.43} - Current
magnitude
10.0 V = 2 x Motor rated current
To Next Page
Loading...
Need help?
General
