# Parameter mm.000

Parameter mm.000 (mm.000) is one parameter that can be accessed from every drive menu so that the user can initiate various actions by setting a value in this parameter and then performing a drive reset. If the action is completed successfully parameter mm.000 is cleared when the action is complete. If the action is not started because the value does not correspond to an action, or because the action is not allowed (i.e. an attempt is made to load defaults and the drive is enabled), parameter mm.000 is not cleared. If the action is started and then fails a trip is produced and parameter mm.000 is not cleared.

There could be some conflict between the actions of Parameter mm.000 (mm.000) and Parameter Cloning (11.042) when the drive is reset. If Parameter Cloning (11.042) has a value of 1 or 2 and a valid action is required from the value of parameter mm.000 then only the action required by parameter mm.000 is performed, but on successful completion of the action both parameters are cleared. If Parameter Cloning (11.042) has any other value it is not affected.

The table below shows the possible actions that can be initiated with Parameter mm.000 (mm.000).

Parameter mm.000 (mm.000) value | Action | Possible failures
1000 | Save drive user save parameters to non-volatile memory. Power-down save parameters are saved when the drive enters the under voltage state. | No action if the drive is in the under voltage state (i.e. Under Voltage Active (10.016)), or Low Under Voltage Threshold Select (06.067) =1 or Backup Supply Mode Enable (06.068) = 1 or User Supply Select (06.072).
1001 | Save drive parameters to non-volatile memory. It should be noted that power-down save parameters are also saved which will result in one background task scan being extended to 100ms. |
1070 | Reset all option modules |
1233 | Load 50Hz defaults | No action if the drive is enabled
1234 | Load 50Hz defaults to all menus except option module menus (i.e 15 to 20 and 24 to 28) | No action if the drive is enabled
1244 | Load 60Hz defaults | No action if the drive is enabled
1245 | Load 60Hz defaults to all menus except option module menus (i.e 15 to 20 and 24 to 28) | No action if the drive is enabled
1253 | Change drive mode and load 50Hz defaults | No action if the drive is enabled
1254 | Change drive mode and load 60Hz defaults | No action if the drive is enabled
1255 | Change drive mode and load 50Hz defaults except for menus 15 to 20 and 24 to 28 | No action if the drive is enabled
1256 | Change drive mode and load 60Hz defaults except for menus 15 to 20 and 24 to 28 | No action if the drive is enabled
1299 | Reset Stored HF trip. |
2001 | Create a boot file on a non-volatile media card based on the present drive parameters including all Menu 20 parameters | Non-volatile media card trips
4xxx | NV media card: Transfer the drive parameters to parameter file xxx | Non-volatile media card trips
5xxx | NV media card: Transfer the onboard user program to onboard user program file xxx | Non-volatile media card trips
6xxx | NV media card: Load the drive parameters from parameter file xxx or the onboard user program from onboard user program file xxx | No action if the drive is enabled Non-volatile media card trips
7xxx | NV media card: Erase file xxx | Non-volatile media card trips
8xxx | NV Media card: Compare the data in the drive with file xxx | Non-volatile media card trips
9555 | NV media card: Clear the warning suppression flag | Non-volatile media card trips
9666 | NV media card: Set the warning suppression flag | Non-volatile media card trips
9777 | NV media card: Clear the read-only flag | Non-volatile media card trips
9888 | NV media card: Set the read-only flag | Non-volatile media card trips
9999 | NV media card: Erase and format the NV media card | Non-volatile media card trips
110SI | Transfer electronic nameplate data from an encoder into drive parameters. I is the interface: 1=P1 position feedback interface, 2=P2 position feedback interface. S is the source: 0=drive, 1=Option Slot 1, ... 4=Option Slot 4. | If a drive interface is selected (i.e. S = 0): If a suitable feedback device is not available then parameter zero will remain at the value set and no action will be taken. If the device does not respond, or there is a comms error or the CRC of the nameplate data is incorrect then a trip is initated. If an option module interface is selected (i.e. S = 1, 2, 3 or 4): If the selected option module is not present or does not support the electronic nameplate function then the system will time out and initiate a trip. If the device does not respond, or there is a comms error or the CRC of the nameplate data is incorrect then a trip is initated. See Name Plate for more details on the trips.
12000 | Only display parameters that are different from their default value. This action does not require a drive reset. |
12001 | Only display parameters that are used to set-up destinations (i.e. DE format bit is 1). This action does not require a drive reset. |
59999 | Deletes an onboard user program if a program is present. Note: Any parameter changes that have not been saved will be lost during this action. | No action if the drive is enabled. No action if there is no program present. No action if the user program is enabled (i.e. Onboard User Program: Enable (11.047) = 1)
40xxx | If xxx is between 001 and 999 the system is cloned on to an SD card if fitted. This system has been partially implemented, so initiating this process creates the back-up structure on the SD card but does not copy any drive or option module data. Future development is required to complete this function. | No action if the drive is enabled. The drive will trip if the requested back-up data already exists or an option module deos respond correctly during the process.
60xxx | If xxx is between 001 and 999 the system is cloned from an SD card if fitted. This system has not been implemented, but parameter mm.000 is reset if a value between 60001 and 60999 is entered and the drive is reset. Future development is required to complete this function. | No action if the drive is enabled.

Parameter mm.000 (mm.000) values from 1 to 14 are equivalent to other values as shown in the table below to allow easy access to some commonly used functions. For 0 and each of these values the keypad provides a string as shown.

Value | String | Equivalent value | Action
0 | [No Action] | 0 |
1 | [Save parameters] | 1001 | Save drive parameters to non-volatile memory
2 | [Load file 1] | 6001 | Load the data from file 1 on a non-volatile media card into the drive provided it is a parameter file
3 | [Save to file 1] | 4001 | Store the drive parameters in file 1 on a non-volatile media card
4 | [Load file 2] | 6002 | Load the data from file 2 on a non-volatile media card into the drive provided it is a parameter file
5 | [Save to file 2] | 4002 | Store the drive parameters in file 2 on a non-volatile media card
6 | [Load file 3] | 6003 | Load the data from file 3 on a non-volatile media card into the drive provided it is a parameter file
7 | [Save to file 3] | 4003 | Store the drive parameters in file 3 on a non-volatile media card
8 | [Show non-default] | 12000 | Only display parameters that are different from their default value
9 | [Destinations] | 12001 | Only display parameters that are used to set-up destinations
10 | [Reset 50Hz defs] | 1233 | Load 50Hz defaults
11 | [Reset 60Hz defs] | 1244 | Load 60Hz defaults
12 | [Reset modules] | 1070 | Reset all option modules
13 | [Read Enc. NP P1] | 11001 | Encoder electronic nameplate transfer from the encoder connected to drive P1 interface to the drive.
14 | [Read Enc. NP P2] | 11051 | Encoder electronic nameplate transfer from the encoder connected to drive P2 interface to the drive.

Saving drive parameters
User-save and power-down save drive parameters are stored in non-volatile memory within the drive. Any values that have changed are copied to this memory under the following conditions.

Parameter type | Conditions for copy to non-volatile memory
User-save parameter not visible in menu 0 | Drive reset with 1000 in Parameter mm.000 (mm.000) if the drive is not in the under voltage state and the standard under voltage threshold is being used (i.e. Low Under Voltage Threshold Select (06.067) = 0). OR A drive reset with 1001 in Parameter mm.000 (mm.000). OR After parameters are transferred from a non-volatile media card. OR After the drive mode is changed. OR After default parameters are loaded. OR After parameters are transferred from an electronic nameplate.
User save parameter visible in menu 0 | Under the conditions given above for user save parameters not visible in Menu 0. OR If the keypad is in edit mode for a user-save parameter in Menu 0, the parameter is saved when the keypad mode is changed from edit mode.
Power-down save parameter | A drive reset with 1000 in Parameter mm.000 (mm.000) if the drive is not in the under voltage state and the standard under voltage threshold is being used (i.e. Low Under Voltage Threshold Select (06.067) = 0). OR A drive reset with 1001 in Parameter mm.000 (mm.000). OR On the transition into the under voltage state when the standard under voltage threshold is being used (i.e. Low Under Voltage Threshold Select (06.067) is zero). OR After the drive mode is changed. OR After parameters are transferred from a non-volatile media card which results in the drive mode changing.

It can take some time for parameter data to be copied to non-volatile memory, especially if there are a large number of differences between the parameter values in the drive and the values stored in the memory. Saving Power-down save parameters takes a maximum of 300ms, but saving user-save parameters can take several seconds. If the drive is powered from a 24V control supply, or from a low voltage supply, the power down time of the control system can be very short and there is a risk that either the stored values of the power-down save or user-save parameters could be corrupted. This would result in an EEPROM Fail trip at the next power-up. To reduce this risk, the power-down save and user-save parameters are each stored in two banks. The banks are alternated each time a save is performed and the bank pointer is only updated once the save is complete. If the new bank is corrupted a User Save or Power Down Save is initiated at the next power-up indicating an error in the user-save or power-down save data respectively, and the data from the old bank is used. The following points should be noted:

1. If a User Save or Power Down Save trip occur at power-up then parameter changes made before power down will be lost. To clear these trips a parameter save must be performed. If both the user-save and power-down save data is corrupted then a Power Down Save trip is produced.
2. When a Menu 0 parameter is changed its value is saved immediately to the active bank and the bank pointer is not changed. Therefore changes made via Menu 0 are not lost if a User Save trip occurs at power-up.
3. When the drive mode changes all the data in both banks in the non-volatile memory is cleared and the default parameters are saved in both banks. Therefore there is an extended parameter saving period immediately after a drive mode change.
4. Two banks are not provided in non-volatile media cards therefore the card could be corrupted if the power is removed when the drive is writing data to the card.

Loading defaults
A drive reset with 1233 in Parameter mm.000 (mm.000) loads the defaults defined for each parameter. If defaults are loaded with 1244 in Parameter mm.000 (mm.000) then the parameters in the table below have different defaults that are intended for the 60Hz regions.

Parameter | Default | Drive modes | Drive voltage rating
Maximum reference clamp (01.006) | 60.0Hz | Open-loop | All
Maximum reference clamp (01.006) | 1800rpm | RFC-A | All
Standard Ramp Voltage (02.008) | 775V | Open-loop, RFC-A, RFC-S | 400V
Rated Frequency (05.006) | 60.0Hz | Open-loop, RFC-A | All
Rated Load rpm (05.008) | 1800rpm | Open-loop | All
Rated Load rpm (05.008) | 1770rpm | RFC-A | All
Rated Voltage (05.009) | 460V | Open-loop, RFC-A, RFC-S | 400V
M2 Maximum Reference Clamp (21.001) | 60.0Hz | Open-loop | All
M2 Maximum Reference Clamp (21.001) | 1800rpm | RFC-A | All
M2 Rated Frequency (21.006) | 60.0Hz | Open-loop, RFC-A | All
M2 Rated Load rpm (21.008) | 1800rpm | Open-loop | All
M2 Rated Load rpm (21.008) | 1770rpm | RFC-A | All
M2 Rated Voltage (21.009) | 460V | Open-loop, RFC-A, RFC-S | All

Non-volatile media card data transfer
Details of the data that can be stored on a non-volatile media card and the methods to transfer/access this data are given in Menu 11.

Stored HF trips
When the drive is subsequently powered up a Stored HF trip is initiated where the sub-trip number is the number of the HF trip that last occurred. This trip will occur at every power-up until it is reset. The trip can only be reset by first entering 1299 into Parameter mm.000 (mm.000). If the drive is powered up and a Stored HF trip occurs, Onboard User Program: Enable (Pr 11.047) is reset to zero to prevent the on-board user program from running. This ensures that the user program can be changed or erased in case it causes an HF trip at every power-up. Once the Stored HF is cleared, it is necessary to power cycle the drive or to re-download the user program to allow the program to restart.

Electronic nameplate
The electronic nameplate is stored in an encoder as a table of bytes as shown in the example below which contains 7 parameter objects.

N1 | N0 | CRC3 | CRC2 | CRC1 | CRC0 | FLG1 | FLG0 | 0xFF | 0xFF | 0xFF | 0xFF | 0xFF | 0xFF | 0xFF | 0xFF
M | P | V3 | V2 | V1 | V0 | M | P | V3 | V2 | V1 | V0 | M | P | V3 | V2
V1 | V0 | M | P | V3 | V2 | V1 | V0 | M | P | V3 | V2 | V1 | V0 | M | P
V3 | V2 | V1 | V0 | M | P | V3 | V2 | V1 | V0 |  |  |  |  |  |

N1(MS byte) and N0(LS byte) gives the number of parameter objects stored in the nameplate. In this example N1=0x00 and N0=0x07.

CRC3 (MS byte) to CRC0 (LS byte) is a 32 bit CRC applied to all bytes in the nameplate except for the number of parameter objects and the CRC. The CRC is generated with a reverse polynomial 0xEDB88320.

FLG1 (MS byte) and FLG0 (LS byte) are assigned for bit flags. At present none of these flags are used, and so these bytes are always zero.

Each parameter object consists of 6 bytes:
M is the menu number between 1 and 41.
P is the parameter number between 0 and 255.
V3 (MS byte) to V0 (LS byte) give a signed 32 bit parameter value. This is equivalent to the largest parameter size used by the drive, and so it can be used to hold the maximum or minimum value of any parameter.

The total size of the nameplate in bytes is the 16 header bytes plus 6 x number of parameter objects.

In an EnDat encoder the namplate begins at the start of MRS area 0xAB and finishes at the end of MRS area 0xAD. Although not guaranteed, these areas normally both consist of 256 words giving a total size of 1024 bytes. Therefore a nameplate can hold up to (1024 - 16 (header)) / 6 = 168 parameter objects. The time to read the nameplate is approximately 60ms per parameter object when P1 Device Type (03.038) is SC.EnDat, and 120ms per parameter when P1 Device Type (03.038) is EnDat.

In a Hiperface encoder the nameplate can be stored in up to 8 datafields starting at the begining of datafield 0. The size of datafields can be between 16 and 128 bytes. It is recommended that 128 byte datafields are used, and so the maximum size of the nameplate is 1024 bytes. Therefore a nameplate can hold up to (1024 - 16 (header)) / 6 = 168 parameter objects. The time to read the nameplate is approximately 100ms per parameter object.

The nameplate can hold any parameters stored in drive menus (i.e. 0 to 41). If the menu and parameter number correspond to a parameter that does not exist or is read-only then the parameter is simply not written and no trip is initiated. If the value of the parameter is out of range for the parameter then the parameter is not written and a no trip is initiated.