Emulated Encoder Output (EEO)

The drive calculates the motor shaft position from the cyclic- absolute signals of the commutation feedback, generating incremental-encoder compatible pulses or CW/CCW signals or PulseWhen the step gets activated, the action is activated for a single execution, and possibly once again when the step is deactivated/Direction signals from this information.

The resolution and the index (zero) position can be set in WorkBench. The outputs are driven from an internal supply voltage. Refer to the WorkBench Online Help see "Encoder Emulation" for more information.

When using a multispeed resolver (more than 2 poles) as commutation feedback, the EEO will create only one zero pulse per each mechanical revolution of the motor. The zero pulse is dependent on the motors starting position!

Examples for Master-Slave connection see see "Master-Slave control".

 

Technical characteristics X22, EEO2

Pulse outputs on the connector X22 are 2 signals, tracks A and B, with 90° phase difference (i.e. in quadrature, hence the alternative term “A quad B” output).

• Electrical Interface: RS-485, max. current 100 mA, the maximum number of connected slaves is determined by the loading characteristics of the slaves, 32 slaves can be driven if the input impedance of the bias network is 10kΩ and only one slave has a DC termination resistor.
• Max signal (channel) output frequency: 3 MHz
• The pulses per revolution value is settable
• Pulse phase shift: 90°±20°

X22	Signals EEO2	Description
A17	AGND	Analog ground
A20	Track A+	EEO2 output, channel A positive
A21	Track A-	EEO2 output, channel A negative
B20	Track B+	EEO2 output, channel B positive
B21	Track B-	EEO2 output, channel B negative

 

Technical characteristics X23, EEO1

Pulse outputs on the SubD connector X23 are 3 signals, A, B and Index, with 90° phase difference (i.e. in quadrature, hence the alternative term “A quad B” output), with a zero pulse.

• Electrical Interface: 5V TTL, current 60 mA, max. number of connected slaves is determined by the loading characteristics of the slaves, 32 slaves can be driven if the input impedance of the bias network is 10kΩ and only one slave has a DC termination resistor.
• Max signal (channel) output frequency: 3 MHz
• The pulses per revolution value is settable
• Pulse phase shift: 90°±20°

X23	Signals EEO1	Description
6	Zero+	EEO1 output, index positive
7	Zero-	EEO1 output, index negative
11	0 V	EEO1 output, ground
12	Track A+	EEO1 output, channel A positive
13	Track A-	EEO1 output, channel A negative
14	Track B+	EEO1 output, channel B positive
15	Track B-	EEO1 output, channel B negative

 

Technical characteristics X41 (SFA), EEO3/EEO4 (in process)

Pulse outputs on the SubD connector X41 are 3 signals, A, B and Index, with 90° phase difference (i.e. in quadrature, hence the alternative term “A quad B” output), with a zero pulse.

• Electrical Interface: 5V TTL, current 60 mA, max. number of connected slaves is determined by the loading characteristics of the slaves, 32 slaves can be driven if the input impedance of the bias network is 10kΩ and only one slave has a DC termination resistor.
• Max signal (channel) output frequency: 3 MHz
• The pulses per revolution value is settable
• Pulse phase shift: 90°±20°

X41	Signals EEO3	Description
6	Zero+	EEO3 output, index positive
7	Zero-	EEO3 output, index negative
11	0 V	EEO3 output, ground
12	Track A+	EEO3 output, channel A positive
13	Track A-	EEO3 output, channel A negative
14	Track B+	EEO3 output, channel B positive
15	Track B-	EEO3 output, channel B negative