Delta Electronics ASDA-B Series manual OFF MBT1 MBT2, Son Off, Brkr OFF

Chapter 6 Control Modes of OperationASDA-B Series

If the users desire to control electromagnetic brake via external controller, not by the servo drive, the users must execute the function of electromagnetic brake during the period of time when servo motor is braking. The braking strength of motor and electromagnetic brake must be in the same direction when servo motor is braking. Then, the servo drive will operate normally. However, the servo drive may generate larger current during acceleration or at constant speed and it may the cause of overload (servo fault).

Timing chart for using servo motor with electromagnetic brake:

1. When the setting value of P1-43 is greater than or equal to 0 (zero)

SON

(Digital Input)

BRKR

(Digital Output)

		ON
OFF				OFF
		ON
OFF				OFF
	MBT1		MBT2
(P1-42)		(P1-43)

When SERVO OFF (when DI SON is not activated), the BRKR output goes Off (electromagnetic brake is locked) after the delay time set by P1-43 is reached.

2. When the setting value of P1-43 is greater than or equal to 0 (zero)

SON	OFF		ON		OFF
(Digital Input)
			ON
SON
	OFF				OFF
(Digital Output)
			ON	MBT2(P1-43)
BRKR
	OFF				OFF
(Digital Output)
		MBT1(P1-42)

When SERVO OFF (when DI SON is not activated), if the BRKR output goes Off (electromagnetic brake is locked), the servo motor goes Off after the delay time set by P1-43 is reached.

Revision January, 2009 6-37