Fuji Electric ALPHA5 Smart, User Manual

Page: 61 / 636

CHAPTER 2 WIRING
Configuration
2-13
2
2.1.3.2 Pulse Output (FFA, *FFA, FFB, *FFB, FFZ, *FFZ)
The pulses proportional to the motor revolutions are output as A/B phase pulse.

The number of output pulses per motor revolution can be specified in the parameter (PA1_08).

The output pulse frequency is proportionate to axis revolution speed. Although the output
frequency is not limited, it has to be 500 kHz or lower considering the electrical limit of the output
circuit.

The output pulse phase (A or B phase advance) to the motor revolution direction can be specified
in the parameter (PA1_11).

The FFZ and *FFZ signals output one pulse per motor revolution. The output position can be
adjusted in the parameter (PA1_12).

In the case of GYB motor at speed of 100r/min or less after the power turned on the output of first
Z phase will happen within 1 rotation after the motor becomes over 12-degree as worst.
2.1.3.3 Z-Phase Output (FZ, M5)
The Z-phase output is an open collector output of the FFZ or *FFZ signal.
The current can flow up to 30 VDC/50 mA.
2.1.3.4 Analog Input (VREF(TREF),M5)
The analog input is the terminal used when performing the speed/torque control by analog commands.

Input voltage: 0 to ±10 VDC

Variable resistor: 1 to 5 k Ω (1/2 W)

Input impedance: 20 k Ω
Servo amplifier
AM26LS31
0 V
FFA,(FFB),(FFZ)
*FFA,(*FFB),(*FFZ)
M5
5 V
Servo amplifier
220k
22k
M5
VREF(TREF)
Servo amplifier
2SC2712 or
equivalent
FZ
M5