Emerson 400518-01 Motor Feedback Wiring J6, Connection of Encoder Quadrature and Marker Signals

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Specification

to the logic supply are PELV, the wiring need not be isolated from direct contact within a zone of equipotential bonding, normally an enclosure or set of enclosures bonded together. Otherwise, logic wiring and circuits must be isolated from direct contact by basic insulation for 300 V system voltage.

In all applications, do not interconnect extra low voltage power supplies so that voltages add.

Motor Feedback Wiring (J6)

Encoder feedback connections are made with the 15-pin high density “D” connector (J6) on the drive. Maximum feedback cable length is 200 ft [60 m].

Connection of Encoder Quadrature and Marker Signals

For A, A/, B, B/ and Z, Z/ pairs, Control Techniques cables use low capacitance (~10 pf/ft) wire to get a high characteristic impedance and low loss. The differential input circuit accepts RS-485 level signals, but if the differential voltage is less than ±400 mV, an encoder fault is generated.

Connection of Encoder Commutation Signals to the Drive

The drive is capable of receiving U, V, and W commutation signals from either a differential or single ended source. Figures 20 through 22 show a simplified circuit for the U, U/, V, V/, W, and W/ inputs on the drive. For single-ended encoder outputs, leave U/, V/, and W/ unconnected at the drive. No PowerTools configuration is required. U, V, and W have a 1K pull-up to 5V. Logic threshold is about 2.5 V with 0.1 V hysteresis.

Motor Overtemp Wiring

The motor overtemp circuit is compatible with PTC thermistor sensor with 1K resistance at the over temperature trip point. The circuit provides 5V open circuit and 0.5 mA closed contacts to an overload switch. For motors without over temperature protection sensors, pins 14 and 15 of J6 must be shorted together to prevent an overtemp fault in the drive.

NT/MG Motor

			Motor Feedback Cable	Epsilon EP		+5 V
	NT or MG Motor		Model # EFCS-XXX		Drive
	A	B	Blue	1	A	2K	2K
			Orange
	A/	C		2	A/	A
			Green
	B	N		3	B		220 Ohm
			Brown
	B/	P		4	B/
			Black			A/
	Z	M		5	Z				Differential
			Yellow
	Z/	U		6	Z/				Receiver
			White/Brown					+5 V
	U	E		7	U
			Brown/White
	U/	R		8	U/
			White/Gray				2K	1K
	V	F		9	V
			Gray/White
	V/	S		10	V/		U
			Red/Orange
	W	G		11	W
			Orange/Red				U/
	W/ H			12	W/
			*Red/Blue
	+ 5 Vdc	K		13	+5 Vdc			2K	Differential
			Blue/Red
	GND	T		14	GND				Receiver
	Motor		Red/Green
		A		15	Motor Overtemp
	Overtemp		Green/Red
	+ 5 Vdc	J					+5 V
Internal		L
Motor	Overtemp GND	D				10K		10K
Thermal
		V
Switch
		W
		X
	Shield	Y
		Z				10 Ohm	1.0K
	Connector Shell
			= Twisted Pair		PE
					Single Point
						Ground

Figure 20: Motor Encoder Feedback Connector Pinout

Installation 23