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H45 Mock Alarm H97 (Clear Alarm Data)
H45 causes the inverter to generate a mock alarm in order to check whether external sequences function correctly at the
time of machine setup.
Setting the H45 data to "1" displays mock alarm
err
on the LED monitor. It also issues alarm output (for any alarm)
ALM (if assigned to a digital output terminal by any of E20 to E24 and E27). (Accessing the H45 data requires
simultaneous keying of "
key + key.") After that, the H45 data automatically reverts to "0," allowing you to
reset the alarm.
Just as data (alarm history and relevant information) of those alarms that could occur in running the inverter, the
inverter saves mock alarm data, enabling you to confirm the mock alarm status.
To clear the mock alarm data, use H97. (Accessing the H97 data requires simultaneous keying of "
key + key.")
H97 data automatically returns to "0" after clearing the alarm data.
A mock alarm can be issued also by simultaneous keying of " key + key" on the keypad for 5 seconds or
more.
H46 Starting Mode (Auto search delay time 2) (Refer to H09.)
H47, H48 Initial Capacitance of DC Link Bus Capacitor
Cumulative Run Time of Capacitors on Printed Circuit Boards
(Refer to H42.)
H50, H51
H52, H53
Non-linear V/f Pattern 1 (Frequency and Voltage)
Non-linear V/f Pattern 2 (Frequency and Voltage)
(Refer to F04.)
H49 Starting Mode (Auto search delay time 1) (Refer to H09.)
H54, H55
H56
H57 to H60
Acceleration Time, Deceleration Time (Jogging)
Deceleration Time for Forced Stop
1st/2nd S-curve Acceleration/Deceleration Range
(Refer to F07.)
H61 UP/DOWN Control (Initial frequency setting) (Refer to F01.)
H63 Low Limiter (Mode selection) (Refer to F15.)
H64 Low Limiter (Lower limiting frequency)
H64 specifies the lower limit of frequency to be applied when the current limiter, torque limiter, automatic deceleration
(anti-regenerative control), or overload prevention control is activated. Normally, it is not necessary to change this data.
- Data setting range: 0.0 to 60.0 (Hz)
H65, H66 Non-linear V/f Pattern 3 (Frequency and Voltage) (Refer to F04.)
H67 Auto Energy Saving Operation (Mode selection) (Refer to F37.)
H68 Slip Compensation 1 (Operating conditions) (Refer to F42.)
H69 Automatic Deceleration (Mode selection) H76 (Torque Limiter, Frequency increment limit for braking)
H69 enables or disables the anti-regenerative control.
In the inverter not equipped with a PWM converter or braking unit, if the regenerative energy returned exceeds the
inverter's braking capability, an overvoltage trip occurs.
To avoid such an overvoltage trip, enable the automatic deceleration (anti-regenerative control) with this function code,
and the inverter controls the output frequency to keep the braking torque around 0 N·m in both the deceleration and
constant speed running phases.
FRENIC-MEGA series of inverters have two braking control modes; torque limit control and DC link bus voltage
control. Understand the feature of each control and select the suitable one.
Control mode Control process Operation mode Features
Torque limit
control
(H69=2 or 4)
Controls the output frequency
to keep the braking torque at
around "0."
Enabled during acceleration,
running at the constant
speed, and deceleration.
Quick response.
Causes less overvoltage trip
with heavy impact load.
DC link bus
voltage control
(H69=3 or 5)
Control the output frequency
to lower the DC link bus
voltage if the voltage exceeds
the limiting level.
Enabled during deceleration.
Disabled during running at
the constant speed.
Shorter deceleration time
by making good use of the
inverter's regenerative
capability.
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