U4: Maintenance Monitors

U4-01

(004C)

Cumulative Ope Time

Shows the cumulative operation time of the drive.

Use parameter o4-01 [Elapsed Operating Time Setting] to reset this monitor. Use parameter o4-02 [Elapsed Operating Time Selection] to select the cumulative operation times from:

• The time from when the drive is energized until it is de-energized.

• The time at which the Run command is turned ON.

The maximum value that the monitor will show is 99999. After this value is more than 99999, the drive automatically resets it and starts to count from 0 again.

10 V: 99999 h

U4-02

(0075)

Num of Run Commands

Shows how many times that the drive has received a Run command.

Use parameter o4-13 [RUN Command Counter @ Initialize] to reset this monitor. The maximum value that the monitor will show is 65535. After this value is more than 65535, the drive automatically resets it and starts to count from 0 again.

10 V: 65535 times

U4-03

(0067)

Cooling Fan Ope Time

Shows the cumulative operation time of the cooling fans.

Use parameter o4-03 [Fan Operation Time Setting] to reset this monitor. The maximum value that the monitor will show is 99999. After this value is more than 99999, the drive automatically resets it and starts to count from 0 again.

10 V: 99999 h

U4-04

(007E)

Cool Fan Maintenance

Shows the cumulative operation time of the cooling fans as a percentage of the estimated performance life of the cooling fans.

The default value is 0. The value counts up from 0.

Use o4-03 [Fan Operation Time Setting] to reset this monitor.

10 V: 100%

U4-05

(007C)

CapacitorMaintenance

Shows the operation time of the electrolytic capacitors for the main circuit and control circuit as a percentage of the estimated performance life of the electrolytic capacitors.

The default value is 0. The value counts up from 0.

Use o4-05 [Capacitor Maintenance Setting] to reset this monitor.

10 V: 100%

U4-06

(07D6)

PreChargeRelayMainte

Shows the operation time of the soft charge bypass relay as a percentage of the estimated performance life of the soft charge bypass relay.

The default value is 0. The value counts up from 0.

Use o4-07 [Softcharge Relay Maintenance Set] to reset this monitor.

10 V: 100%

U4-07

(07D7)

IGBT Maintenance

Shows the operation time of the IGBTs as a percentage of the estimated performance life of the IGBTs.

The default value is 0. The value counts up from 0.

Use o4-09 [IGBT Maintenance Setting] to reset this monitor.

10 V: 100%

U4-08

(0068)

Heatsink Temperature

Shows the heatsink temperature of the drive.

10 V: 100 °C

U4-09

(005E)

LED Check

Turns on all of the keypad LEDs to make sure that the LEDs operate correctly.

1. With U4-09 displayed, press .

   All LEDs on the keypad will turn on.

No signal output available

U4-10

(005C)

kWh, Lower 4 Digits

Shows the lower 4 digits of the watt hour value for the drive.

No signal output available

U4-11

(005D)

kWh, Upper 5 Digits

Shows the upper 5 digits of the watt hour value for the drive.

No signal output available

U4-13

(07CF)

Peak Hold Current

Shows the hold value of the peak value (rms) for the drive output current.

Use U4-14 [PeakHold Output Freq] to show the drive output frequency at the time that the drive holds the output current.

The drive will hold the peak hold current at the next start up and restart of the power supply. The drive keeps the value that was under hold during baseblock (during stop).

The keypad shows the value of U4-13 in amperes (A). When looking at the monitor through MEMOBUS/Modbus communications, the current is “8192 = drive rated current (A)”. Calculate the current from the monitor value that is in at MEMOBUS/Modbus communications using “Numerals being displayed / 8192 × drive rated current (A).

No signal output available

U4-14

(07D0)

PeakHold Output Freq

Shows the output frequency at which the peak value (rms) of the drive output current is held.

The peak hold current can be monitored by U4-13 [Peak Hold Current].

The peak hold output frequency will be cleared at the next startup and restart of the power supply. The drive keeps the value that was under hold during baseblock (during stop).

No signal output available

U4-16

(07D8)

Motor oL1 Level

Shows the integrated value of oL1 [Motor Overload] as a percentage of oL1 detection level.

10 V: 100%

U4-18

(07DA)

Reference Source

Shows the selected frequency reference source.

The keypad shows the frequency reference source as “XY-nn” as specified by these rules:

X: External Reference 1/2 Selection [H1-xx = 2] selection status

• 1: b1-01 [Frequency Reference Selection 1]

• 2: b1-15 [Frequency Reference Selection 2]

Y-nn: Frequency reference source

• 0-01: Keypad (d1-01 [Reference 1])

• 1-00: Analog input (unassigned)

• 1-01: MFAI terminal A1

• 1-02: MFAI terminal A2

• 2-02 to 2-17: Multi-step speed reference (d1-02 to d1-17 [Reference 2 to 16, Jog Reference])

• 3-01: MEMOBUS/Modbus communications

• 4-01: Communication option card

• 5-01: Pulse train input

• 7-01: DriveWorksEZ

• 9-01: Up/Down command

No signal output available

U4-19

(07DB)

Modbus FreqRef (dec)

Shows the frequency reference sent to the drive from the MEMOBUS/Modbus communications as a decimal.

10 V: Maximum frequency (0 V to +10 V)

U4-20

(07DC)

Option Freq Ref(dec)

Shows the frequency reference sent to the drive from the communication option as a decimal.

10 V: Maximum frequency (0 V to +10 V)

U4-21

(07DD)

Run Command Source

Shows the selected Run command source.

The keypad shows the Run command source as “XY-nn” as specified by these rules:

X: External Reference 1/2 Selection [H1-xx = 2] selection status

• 1: b1-02 [Run Command Selection 1]

• 2: b1-16 [Run Command Selection 2]

Y: Run command source

• 0: Keypad

• 1: Control circuit terminal

• 3: MEMOBUS/Modbus communications

• 4: Communication option card

• 7: DriveWorksEZ

nn: Run command limit status data

• 00: No limit status.

• 01: The Run command was left ON when the drive stopped in the Programming Mode.

• 02: The Run command was left ON when switching from LOCAL Mode to REMOTE Mode.

• 03: The Run command is in standby after the drive was energized until the soft charge bypass contactor turns ON.

  Note:

  The drive will detect Uv1 [DC Bus Undervoltage] or Uv [Undervoltage] if the soft charge bypass contactor does not turn ON after 10 s.

• 04: Restart after run stop is prohibited.

• 05: Fast stop has been executed using the MFDI terminal. Or, the motor has ramped to stop by pressing the STOP key on the keypad.

• 06: b1-17 = 0 [Run Command at Power Up = Disregard Existing RUN Command] is set.

• 07: During baseblock while coast to stop with timer.

• 08: Frequency reference is below E1-09 [Minimum Output Frequency] during baseblock.

• 09: Waiting for the Enter command from PLC.

No signal output The keypad shows the Run command source as "XY-nn" as specified by these rules: available

U4-22

(07DE)

Modbus CmdData (hex)

Shows the operation signal (register 0001H) sent to the drive from MEMOBUS/Modbus communications as a 4-digit hexadecimal number (zero suppress).

The keypad shows the operation signal as specified by these rules:

bit 0

Forward run/Stop

When bit 0 = 1, it indicates that the Forward run signal has been input.

bit 1

Reverse run/Stop

When bit 1 = 1, it indicates that the Reverse run signal has been input.

bit 2

External fault

When bit 2 = 1, it indicates that the fault (EF0 [Option Card External Fault]) signal has been input.

bit 3

Fault Reset Procedure

When bit 3 = 1, it indicates that the reset command signal has been input.

bit 4

Multi-function input 1

Function is ComRef when Forward run/Stop is set.

bit 5

Multi-function input 2

Function is ComCtrl when Reverse run/Stop is set.

bit 6

Multi-function input 3

 

bit 7

Multi-function input 4

 

bit 8

Multi-function input 5

 

bit 9

Multi-function input 6

 

bit A

Multi-function input 7

 

bit B

Not used (normal value of 0).

 

bit C

Not used (normal value of 0).

 

bit D

Not used (normal value of 0).

 

bit E

Not used (normal value of 0).

 

bit F

Not used (normal value of 0).

 

No signal output available