5-125
Combination of command sources
Frequency command
Inverter itself
Via RS-485
communications
link (port 1)
Via RS-485
communications
link (port 2)
Via fieldbus
(option)
Ru
n c
ommand s
ource
Inverter itself
H30 = 0
y98 = 0
H30 = 1
y98 = 0
H30=4
y98=0
H30=0 (1 or 4)
y98=1
Via RS-485 communications
link (port 1)
H30 = 2
y98 = 0
H30 = 3
y98 = 0
H30=5
y98=0
H30=2 (3 or 5)
y98=1
Via RS-485 communications
link (port 2)
H30 = 6
y98 = 0
H30 = 7
y98 = 0
H30=8
y98=0
H30=6 (7 or 8)
y98=1
Via fieldbus (option)
H30 = 0 (2 or 6)
y98 = 2
H30 = 1 (3 or 7)
y98 = 2
H30 = 4 (5 or 8)
y98 = 2
H30 = 0 (1 to 8)
y98 = 3
For details, refer to the RS-485 Communication User's Manual or the Field Bus Option Instruction Manual.
When the terminal command
LE
("Enable communications link via RS-485 or fieldbus") is assigned to a digital input
terminal, turning
LE
ON makes the settings of H30 and y98 enabled. When
LE
is OFF, those settings are disabled so that
both frequency commands and run commands specified from the inverter itself take control. (Refer to the descriptions of
E01 through E07, data = 24.)
No
LE
assignment is functionally equivalent to the
LE
being ON.
H42, H43
H48
Capacitance of DC Link Bus Capacitor, Cumulative Run Time of Cooling Fan
Cumulative Run Time of Capacitors on Printed Circuit Boards
H47 (Initial Capacitance of DC Link Bus Capacitor)
H98 (Protection/Maintenance Function)
Life prediction function
The inverter has the life prediction function for some parts which measures the discharging time or counts the voltage
applied time, etc. The function allows you to monitor the current lifetime state on the LED monitor and judge whether those
parts are approaching the end of their service life.
The life prediction function can also issue early warning signals if the lifetime alarm command
LIFE
is assigned to any of
the digital output terminals by any of E20 through E24 and E27.
For details, refer to Chapter 7, "MAINTENANCE AND INSPECTION."
Function
code
Name Description
H42
Capacitance of DC link
bus capacitor
Displays the capacitance of DC link bus capacitor (measured value)
• Start of initial capacitance measuring mode under ordinary operating
conditions (0)
• Measurement failure (1)
H43
Cumulative run time of
cooling fan
Displays the cumulative run time of cooling fan.
• Data setting range: 0 to 99990 (hours)
H47
Initial capacitance of DC
link bus capacitor
Displays the initial capacitance of DC link bus capacitor (measured
value)
• Start of initial capacitance measuring mode under ordinary operating
conditions (0)
• Measurement failure (1)
H48
Cumulative run time of
capacitors on printed
circuit boards
Displays the cumulative run time of capacitor on the printed circuit
board.
• Data setting range: 0 to 99990 (hours)
When replacing the cooling fan or capacitors on printed circuit boards, it is necessary to clear or modify the data of the
function codes listed above. For details, refer to the documentation for maintenance.
Summary of Contents for FRENIC-MEGA
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