External Signal for DC Braking

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When the terminal [DB] is turned ON, the DC braking feature is enabled. Set the following parameters when the external DC braking terminal [DB] is to be used:

ξA053 – DC braking delay time setting. The range is 0.1 to 5.0 seconds.

ξA054 – DC braking force setting. The range is 0 to 100%.

[FW,RV]

[DB]

Output frequency

Scenario 1

The scenarios to the right help show how DC braking works in various situations.

1. Scenario 1 – The [FW] or [RV] terminal is

Scenario 2

Run command 1 from operator 0

ON. When [DB] is ON, DC	braking is
applied. When [DB] is OFF	again, the
output frequency ramps to the prior level.

[DB]

2. Scenario	2 – The Run command is applied
from the operator keypad. When the [DB]
terminal	is ON, DC braking is applied.

Output frequency

When the [DB] terminal is OFF again, the

inverter output remains OFF.

3. Scenario 3 – The Run command is applied

Run command 1 from operator 0

Scenario 3

Operations

from the operator keypad. When the [DB]

terminal is ON, DC braking is applied

[DB]

Monitoring

after the delay time set by A053 expires.

The motor is in a free-running (coasting)

condition. When the [DB] terminal is OFF

again, the inverter output remains OFF.

Output frequency

delay

A053

	and
Monitoring	Operationsand

Option	Terminal	Function Name	State	Description
Code	Symbol	Function Name	State	Description
Code	Symbol
07	DB	External DC	ON	Applies DC injection braking during deceleration
		Braking	OFF	Does not apply DC injection braking during
				deceleration

Valid for inputs:	C001~C005
Required settings	A053, A054
Notes:

ξDo not use the [DB] input continuously or for a long time when the DC braking force setting A054 is high (depends on the motor application).

ξDo not use the [DB] feature for continuous or high duty cycle as a holding brake. The [DB] input is designed to improve stopping performance. Use a mechanical brake for holding a stop position.

Example (requires input configuration—see page 3–49):

		DB
5	4	3	2	1	L	PCS	P24

See I/O specs on page 4–6.

CP-X200 specifications

The Hitachi CP-X200 is a versatile and robust projector designed to cater to the needs of educational and business environments. It combines affordability with high-quality performance, making it an attractive option for various presentations and multimedia applications.

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Hitachi CP-X200 instruction manual External Signal for DC Braking

Models: CP-X200

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