Hitachi J300U Series Operation will be stopped, Inverter requiring an external resistor, External

Extension

function

code

Dynamic braking usage ratio

Contents and display

Set the usage ratio (%) for 100 seconds of BRD.

When the BRD operation exceeds this setting,

NOTE 1: The internal BRD circuit is not mounted

the operation will be stopped.

in an inverter other than the types 055L/HF,

and 075L/HF.

NOTE 2: When 0 % is set, the BRD will not be

Setting method

➤

operated.

2

1

NOTE 3: When T exceeds the set value, the BRD

➤

will be stopped.

FUNC

Initial value

FUNC

NOTE 4: When mounting an external BRD unit, set

the usage ratio to

and remove the

.

.

➤

➤

external resistors.

2

➤

1

➤

NOTE 5: The initial settings of 110-550L/HF

Function contents

.

are 0.0%.

NOTE 6: Conditions when using the external

t1

t2

t3

resistor are shown in the table.

➤

➤

➤

➤

➤

➤

BRD ON

ON

ON

ON

➤

100 seconds

➤

Inverter requiring an external resistor

T =

(t1 + t2 + t3)

100

Model

055, 075LF

055, 075HF

100 seconds

External

RB1 to RB3

RB2, two each in series

resistor

(17 ohm or more)

(70 ohm or more)

Usage ratio

Max. 10 (%)

Max. 10 (%)

NOTE 7: This function cannot be used for the inverter types 110 to 550L/HF which have no built-in BRD (dynamic braking) circuit.

When frequency arrival signal output method 2 is selected, an output signal is outputted at an optional frequency. When frequency arrival signal output method 1 is selected, an output

signal is outputted at an optional frequency or more. For acceleration and deceleration , the frequency is set in units of 0.1 Hz (in units of 1 Hz for 100 Hz or more).

Arrival optional frequency at accelera- tion

Arrival optional frequency at decelera- tion

Setting method

In the case of optional arrival frequency

of acceleration

In the case of optional arrival frequency

of deceleration

FUNC

➤

FUNC

FUNC

➤

FUNC

2	➤
	1
	➤

Initial value

➤.

2	➤
	1
	➤

Initial value

➤.

At the time of acceleration, an output signal

is turned ON in a range from the set frequency -0.5 Hz to the set frequency +1.5 Hz. At the time of deceleration, an output signal is turned ON in a range from the set frequency +0.5 Hz to the set frequency -1.5 Hz.

Output	➤
frequency f
			➤	0.5 Hz
setting			➤
				➤
				-1.5 Hz
				➤
		➤	1.5 Hz
	➤	➤
	➤	-0.5 Hz
setting
	0	ON		t ➤
Output				Running
signal
				time
(FA1)
		60 ms		60 ms
	➤	➤	➤	➤

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