8
2.4 Terminal Function and Specifications
Table 2.4 Terminal Function and Electrical Specifications of OPC-LM1-PS1
Abbreviation Terminal
name
Terminal
function Electric
specifications
PO
Power supply for
encoder
CM
Common terminal of
power supply
Terminal which supplies
power for encoder
・
5 VDC
±
5%, Max. 300 mA
・
5 VDC
±
5% Allowable wiring length.
0 to 10 m
：
One wire each for PO and CM line
0 to 20 m
：
Two wire each for PO and CM line
PA+
The A phase input
terminal (non-inverting)
PA-
The A phase input
terminal (inverting)
The A phase input the
amplitude and the
frequency change
depending on the speed of
the motor.
PB+
The B phase input
terminal (non-inverting)
PB-
The B phase input
terminal (inverting)
The B phase input the
amplitude and the
frequency change
depending on the speed of
the motor.
・
Input frequency
Max. 50 kHz
・
Differential input signal
：
PA(+) - PA(-), PB(+) - PB(-)
0.6V to 1.2V
CK+
Communication clock
(non-inverting)
CK-
Communication clock
(inverting)
Clock transmission
DT+
Communication data
(non-inverting)
DT-
Communication data
(inverting)
Data sending and receiving
RS-485 conforming
FPA
The A phase pulse
output
The pulses with same
frequency as the A phase
input are output.
FPB
The B phase pulse
output
The pulses with same
frequency as the B phase
input are output
・
Transistor output (Open collector)
・
Operation voltage of OFF level : Max. 27 V
・
Operation voltage of ON level : Max. 2.0 V
・
Load current at ON : Max. 50 mA
・
Leakage current at OFF : Max. 200
µ
A
(Note)
It is recommended that terminals FPA and FPB are pulled up with lowest value of resistor with the sink current not
exceeding 50 mA when terminals FPA and FPB are used.
2.5 Control Specifications
Table 2.5 Control Specifications
Item Control
Specifications
Remarks
Motor control method
Vector control
-
Speed control range
0 r/min to 1500 r/min
-
