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3.2.4 Interface Circuit
This section shows examples of servodrive I/O signal connection to the host controller.
■
Interface
Interface
Interface
Interface for
for
for
for Analog
Analog
Analog
Analog Reference
Reference
Reference
Reference Input
Input
Input
Input Circuit
Circuit
Circuit
Circuit
Analog signals are either speed or torque reference signals at about 40kΩimpedance, and the
maximum allowable voltages for input signals is ±10V.
Reference speed input
Reference torque input
■
Interface
Interface
Interface
Interface for
for
for
for sequence
sequence
sequence
sequence input
input
input
input circuit
circuit
circuit
circuit
The sequence input circuit interface connects through a relay or open-collector transistor circuit.Select a
low-current relay otherwise a faulty contact will result.
■
Interface
Interface
Interface
Interface for
for
for
for line
line
line
line driver
driver
driver
driver output
output
output
output circuit
circuit
circuit
circuit
The amount of two-phase (phase A and phase B) pulse output signals (PAO,/PAO,PBO,/PBO) and
zero-point pulse signals(PCO,/PCO) are output via line-driver output circuits.Normally, the servodrive
uses this output circuit in speed control to comprise the position control system at the host controller.
Connect the line-driver output circuit through a line receiver circuit at the host controller.
■
Interface
Interface
Interface
Interface for
for
for
for sequence
sequence
sequence
sequence output
output
output
output circuit
circuit
circuit
circuit
Photocoupler output circuits are used for Servo Alarm (ALM), Servo Ready(S-RDY), and other
sequence output signal circuits.Connect a photocoupler output circuit through a relay circuit.
1 0 V
4 7 0
Ω(1/2W)m i n .
1
2
3
2K
Ω
V-R E F
A G N D
About 4 0 K
Ω
0V
Serv odriv e
1 0 V
4 7 0
Ω(1/2W)m i n .
1
2
3
2K
Ω
T- R E F
A G N D
About 4 0 K
Ω
0V
Serv odriv e
S e rv odriv e
S e rv odriv e
S e rv odriv e
S e rv odriv e
3.3K
Ω
+2 4 V IN
/S-O N ,e tc .
D C 2 4 V
5 0 m A m in .
S e rv odriv e
S e rv odriv e
S e rv odriv e
S e rv odriv e
3.3K
Ω
+2 4 V IN
/S-O N ,e tc .
D C 2 4 V
5 0 m A m in .
