Baldor MN1274 06/2001 Master auxiliary encoder input, Differential encoder connections

3.4.2Master (auxiliary) encoder input - X6

	Location	Connector X6
		Pin	Name
		1	CHA+
		2	CHB+
		3	CHZ+
		4	(not connected)
		5	DGND
9	5	6	CHA-
		7	CHB-
6	1	8	CHZ-
		9	+5V
	Description Optically isolated encoder input on a 9-pin female
		D-type connector

The MintDrive provides an auxiliary (master or handwheel) encoder input which allows following of a master encoder. An interface for a three channel, incremental encoder (CHA, CHB, CHZ) is provided. The input receiver circuit allows only encoders with differential line drivers (RS422) to be used. Single-ended operation is not supported. The interface also provides an isolated 5V supply for the encoder electronics, capable of driving up to 100mA. These inputs are sampled every 0.5, 1 or 2ms.

CAUTION: The auxiliary encoder input does not conform to the standard on other Mint based controllers such as NextMove.

Encoder

Twisted pairs

X6

1

6

2

7

3

8

9

5

CHA+ CHA-- CHB+

CHB-- CHZ+

CHZ-- +5V DGND

Connector backshell	Connection of shields
	to digital ground is optional.

Figure 21 - Differential encoder connections

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