Efficient Networks S120 manual Instructions for switching data sets

Function modules 7.9 Basic positioner

Instructions for switching data sets

Using drive data set switching (DDS), motor data sets (p0186) and encoder data sets (p0187 to p0189) can be switched. The following table shows when the reference bit (r2684.11) or the status of the adjustment with absolute encoders (p2507) is reset.

In the following cases, when a DDS switch takes place, the current actual position value becomes invalid (p2521 = 0) and the reference point (r2684.11 = 0) is reset.

●The EDS that is effective for the position control changes.

●The encoder assignment changes (p2502).

●The mechanical relationships change (p2503...p2506)

With absolute encoders, the status of the adjustment (p2507) is also reset, if the same absolute encoder is selected for the position control although the mechanical relationships have changed (p2503 ... p2506).

In operating mode, an error message (F07494) is also generated.

The following table contains a few examples for data set switching. The initial data set is always DDS0.

Table 7-5		DDS switch without load gearbox position tracking
DDS	p186		p187	p188	p189	Encoder	Mecha-	Load	Changeover response
	(MDS)		(encoder_1)	(encoder_2)	(encoder_3)	for	nical	gearbox
						position	conditions	position
						control	p2504/	tracking
						p2502	p2505/
							p2506 or
							p2503
0	0		EDS0	EDS1	EDS2	encoder_1	xxx	disabled	---
1	0		EDS0	EDS1	EDS2	encoder_1	xxx	disabled	Switching during pulse
									inhibition or operation has
									no effect
2	0		EDS0	EDS1	EDS2	encoder_1	yyy	disabled	Pulse disabling: Position
									actual value preprocessing
									is newly initiated 1) and
									reference bit 2) is reset.
									Operation:
									Error message is
									generated. Position actual
									value preprocessing is
									newly initiated 1) and
									reference bit 2) is reset.
3	0		EDS0	EDS1	EDS2	encoder_2	xxx	disabled	Pulse disabling: Position
4	0		EDS0	EDS3	EDS2	encoder_2	xxx	disabled	actual value preprocessing
									is newly initiated 1) and
5	1		EDS4	EDS1	EDS2	encoder_1	xxx	disabled

266	Drive Functions
	Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4