Sonic Alert DCP301 user manual Motor Adjustment is Impossible

Chapter 9. TROUBLESHOOTING

9-3 Motor Adjustment is Impossible

There are two ways of wiring a motor to the DCP301: wiring for direct motor rotation and wiring for reverse motor rotation. When wired for direct motor rotation, the motor rotates in clockwise (CW ) direction when DCP301 output increases. There are two ways of making the motor rotate in the reverse direction (counterclockwise: CCW) depending on your control requirements (e.g. cooling control):

•By switching the control operating direction on the DCP301 with the motor wired to the DCP301 for direct motor rotation as it is, or

•By wiring the motor to the DCP301 for reverse motor rotation.

The control operating direction (direct/reverse) can be switched on this controller. If the motor is wired to the control- ler for direct motor rotation, the DCP301 can be easily set up for control in either direction. This makes it easier to remedy trouble that may occur during controller operation. For this reason, we recommend wiring the motor to the DCP301 for direct motor operation.

	Wiring for direct motor rotation						Wiring for reverse motor rotation
		DCP301						DCP301
11	12	13	14	15	16	11	12	13	14	15	16
	24Vac						24Vac
	~
							~
2	3	1	Y	T	G	2	3	1	Y	T	G

CW open CCW closed	CW open CCW closed
CW open CCW closed	CW open CCW closed
Motor	Motor

CW: Clock Wise ( )

CCW: Counter Clock Wise ( )

The DCP301 is also provided with a function (A L 1 0 to A L 1 2) for detecting MFB disconnection or short-circuit if the motor has been wired to the controller in the wrong way.

By this function, the DCP301 judges reverse direction wiring in the same way as direct direction wiring, and does not generate an alarm. If the setting of variable parameter M .-Cis left at the factory setting (“0”), motor operation is continued.

The following tables summarize the phenomena that occur according to how the motor and DCP301 are wired when the motor is automatically adjusted (variable parameter M .-A T setting 1 is input). Motor rotation is started from the fully closed position (motor is turned as far as possible CCW).

The values displayed in the lower display in the tables are only examples. Alarms are displayed after the motor fully closes or fully opens.

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