Nidec Control Techniques Digitax-SF DA28C23 - Page 124

37
4
Connection
Digitax SF Instruction Manual
5. Descriptions of CN1 Connector Signals
4. Connections
5. Descriptions of CN1 Connector Signals
Pin No.
18
Interface Circuit
PO（Page 46） Control Mode
Signal Description P S T
OCZ
Encoder Z-Phase
Close
Open collector output of Encoder Z-phase
■ TIP
Z-phase pulse is synchronized with A-phase pulse and is output
with the same width as A-phase pulse.
Open-collector output
■ Related Parameters
･No.276.0, No.278.0
If Z-phase pulse width is too small to be measured accurately
by the host controller, decrease frequency division ratio or
rotational speed to increase the pulse width.
Pulse width [ms]
= 2 / rotational speed [rpm] / (division ratio × 217) × 60 × 1,000.
dif.
24
5
i/o
䐟
䐠
䐡
䐢
v
ol
t
i/o
䐟
䐠
䐡
v
ol
t