Baldor MN1851 manual Control Input Wiring, X3 Control Inputs & Digital I/O Connections

X1 +24VDC Logic Supply For LPxAxxxx-xxx3 only. A separate 24VDC supply to the “Logic Power” input is required for operation. An external 24 VDC power source must be used. If bus power is lost, the logic circuits are still active if the 24VDC is present. This is important to maintain position reference, for example.

If the control was not ordered with this option, do not connect any voltage to these pins.

X3 Control Inputs & Digital I/O Connections

Control Inputs X3 pins 1 and 2 allows connection of an external analog command input. This input can accept a 0-10VDC or ± 10VDC signal and can be wired as a single ended or differential input, shown in Figure 3-15.

Signal

Source

		Figure 3-15	Control Input Wiring
Single Ended Connection				Differential Connection
	X3				X3
	1	CMD+	Signal		1	CMD+
	2	CMD-			2	CMD-
			Source
	3	AGND			3	AGND

X3 Digital Inputs - Opto Isolated Inputs (uses CREF, X3-7)

Active High (Sourcing) - If pin X3-7 is grounded, an input is active when it is at +24VDC (+12VDC to +30VDC).

Active Low (Sinking) - If pin X3-7 is at +24VDC (+12VDC to +30VDC), an input is active when it is grounded.

Logic input connections are made at terminal strip X3. Input connections can be wired as active High or active Low as shown in Figure 3-16. X3 pin 7 is the Control Reference point (CREF) for the Opto Isolated Input signals.

Note: An internal 24VDC power supply connection is not available from the control

to power the Opto Input circuits. A customer provided external power source must be used as indicated in Figure 3-16.

Figure 3-16 Active HIGH /LOW Relationship

Active Low		Active High	Input	Note: All Opto inputs are referenced to
					CREF, X3-7.
(Sink)		(Source)
+24VDC		GND	A		Input
GND		+24VDC	B		A
					B
		20mA			20mA
B	+24VDC	9 - 17	B	GND	9 - 17
A	GND	7	A	+24VDC	7
		Typical			Typical
		Control			Control
	Source			Sink

X3

7

8

9

10

11

12

13

14

15

16

17

CREF

CGND ENABLE CW-ENABLE CCW-ENABLE QUIT FAULT RESET HOME FLAG TRIGGER MAI1

MAI2

3-12 Receiving & Installation MN1851