Moeller - Rapid Link system - Speed Control Unit RA-SP

Speed Control Unit RA-SP [t-head1-pg]

Speed control unit RA-SP is used for electronic variable speed control of three-phase motors.

Notes

Unlike the other Rapid Link system devices, the RA-SP speed control unit’s enclosure is fitted with a heat sink and requires an EMC-conformant mounting and connection.

Connections [t-head3]

Speed control unit RA-SP is supplied ready for connection. The connection to the AS-Interface® data bus and the motor is described below. The connection to the power bus is described in the earlier general section “Rapid Link system”.

The unit is connected to AS-Interface® through an M12 plug with the following PIN assignment:


M12 plug	PIN		Function
	1		ASi+
	2		–
	3		ASi–
	4		–

On the RA-SP the motor feeder features a metal-encapsulated socket. To meet EMC requirements, this is connected with PE and heat sink over a large area. The matching plug is also metal-encapsulated and the motor cable is screened. The length of the motor cable is limited to 10 m. The motor cable’s screen must have a large-area connection with PE at both ends, and the motor connection terminals must also, therefore, meet EMC requirements.

The motor is connected through a halogen-free 4 × 1.5 mm² + 2 × (2 × 0.75 mm²), screened, DESINA-conformant motor supply cable with a length of 2 m, (SET-M4/2-HF) or 5 m, (SET-M4/5-HF).

Alternatively you can assemble your own motor supply cable with plug SET-M4-A, with 4 × 1.5 mm² + 4 × 0.75 mm² contact.


				RA-SP2-...
	Servo cable SET-M4/...			341-... 400 V AC	341(230)-... 230 V AC
1	1	U	–	–	–
•	–	–	–	–	–
3	3	W	–	–	–
4	5	–	–	B1 ()	B1 ()
5	7	–	T1	–	–
6	6	–	–	B2 ()	B2 ()
7	2	V	–	–	–
8	8	–	T2	–	–
PE	PE	PE	–	–	–