Keypad Parameters Display Modification
The default parameter display for Double Line Keypads (EM15 VSDs and Solar Drives) can be changed as follows (changing the display parameters for Single-Line Keypads is not possible):
Top Keypad Line:
To change the Display for the top line set parameter b9-11 using the desired value (Please see FAQ Entry HERE for values).
Bottom Keypad Line:
To change the Display for the bottom line use the Shift Key (double right arrow) on the Keypad to scroll through all the parameters. The last parameter on display will be kept as the default display. When the frequency inverter is powered on again after a power failure, the parameter as recorded before the power failure will be displayed.
Whether parameters are displayed on the Bottom Keypad Line when scrolling using the Shift Key is determined by setting the following parameters:
Parameters Displayed while in Run Status:
- b9-02 (Running Status Parameter Set 1)
- b9-03 (Running Status Parameter Set 2)
These two parameter sets are used to set the 32 monitoring parameters that can be viewed when the VSD is in the running state. If a parameter needs to be displayed during the running status, set the corresponding bit to 1. The displaying sequence is based on the combined list of parameters starting with the b9-02 monitoring parameters up until the last monitoring parameter of b9-03.
Parameters Displayed while in Stop Status:
- b9-04 (Stop Status Parameter Set)
This parameter set is used to set the 16 monitoring parameters that can be viewed when the VSD is in the stop state. If a parameter needs to be displayed during the stop status, set the corresponding bit to 1.
The above 3 parameters are set in hexadecimal format, and thus needs to be converted using their binary values. Please see options listed below:
Converting from Binary to Hexadecimal Values:
Hexadecimal, also known as hex, uses 16 units, numerical numbers 0-9 and the letters A, B, C, D, E and F. To convert from Binary to Hexadecimal, do the following:
- Start at the rightmost digit and break the binary number up into groups of four digits. These are known as nibbles.
- Convert each group of four digits into a decimal value.
- Convert each decimal value into its hex equivalent.
- Put the hex digits together.
Example: To set b9-02 to display parameters 0, 1, 2, 3, 4 and 5, the following Binary values are used -> 0000000000011111. Starting from the right, each group of Binary values can be converted to Decimal and then to Hex as follows:
- 1111 (Binary) = 15 (Decimal) = F (Hex)
- 0001 (Binary) = 1 (Decimal) = 1 (Hex)
- 0000 (Binary) = 0 (Decimal) = 0 (Hex)
- 0000 (Binary) = 0 (Decimal) = 0 (Hex)
Thus, set b9-02 = 001F
Converting from Hexadecimal to Binary Values:
- Split the Hex number into individual values.
- Convert each Hex value into its Decimal equivalent.
- Convert each Decimal digit into Binary (making sure to write four digits for each value).
- Combine all four digits to make one binary number.
Example: Convert Hex FC to Binary:
- F = decimal 15
- C = decimal 12
- 15 = binary 1111
- 12 = binary 1100
Result – 11111100
* Excel Document to specify display parameters and generate the relevant HEX value available HERE.
* Note that the following parameters listed in the images are not relevant: Linear Speed, Count Value, Length Value and Received. Also note that the Load Speed is the same as U0-14.
