3Com MS40-717X warranty Power Wiring Identification, Voltage Designation Wire Color

	4 to 20 mA				MS40-7173
	+	Yellow/Black	AI
	Control	500 Ohm
	Signal			1
		Gray	COM
	-
				2
Position Feedback (-)		Blue	AO
				3
Signal 2 to 10 Vdc (+)
		Red	24H (DC+)
		Black	24G (DC-)
24 Vac Transformer		Green/Yellow	GRD
or 22-30 Vdc

1Unused conduit port must remain plugged with a water tight pipe plug as shipped from factory to maintain NEMA Type 4 or IP56 rating.

2Color coding of wiring on older models (MX40-717x-0- 0-0) manufactured prior to December, 2007, differs from current models. See Table 4 on page 14. Consult label on product to confirm wiring codes.

3Keep AI, COM and AO wiring less than 30 meters length to meet CE requirements.

Figure-6 Typical MS40-7173 4 to 20 mA Wiring Diagram.

2 to 10 Vdc

Control

Signal

(+)

(-)

Position Feedback (-) Signal 2 to 10 Vdc (+)

MS40-717X

Yellow/Black	AI	1	3
Gray	COM
Blue	AO	4	5
				Green/Yellow	GRD
		MS40-717X
Yellow/Black	AI	1	3
Gray	COM	4	5
Blue	AO			Green/Yellow	GRD

2 Power

1Unused conduit port must remain plugged with a water tight pipe plug as shipped from factory to maintain NEMA Type 4 or IP56 rating.

2See table for power wire designations.

3Both actuators must be set to operate in the same direction.

4Color coding of wiring on older models (MX40-717x-0- 0-0) manufactured prior to December, 2007, differs from current models. See Table 4 on page 14. Consult label on product to confirm wiring codes.

5Keep AI, COM and AO wiring less than 30 meters length to meed CE requirements.

Power Wiring Identification.

Voltage	Designation	Wire Color
24 Vac or	24H (DC+)	Red
22-30 Vdc	24G (DC-)	Black
120 Vac	L1	Black
	L2	White
240 Vac	L1	Brown
	L2	Light Blue

Figure-7 Two Actuators on the Same Damper Shaft.

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